EXHIBIT 10.1

CONTACT: CUSTOMER SERVICES -- CTSLINK
         WELLS FARGO BANK MINNESOTA, N.A.
         SECURITIES ADMINISTRATION SERVICES
         7485 NEW HORIZON WAY
         FREDERICK, MD 21703
         WWW.CTSLINK.COM
         TELEPHONE: (301) 815-6600
         FAX:       (301) 315-6660

                                SMT SERIES 2004-4
                           RECORD DATE: MARCH 31, 2005
                        DISTRIBUTION DATE: APRIL 20, 2005

                     CERTIFICATEHOLDER DISTRIBUTION SUMMARY



                     Certificate                          Beginning
                        Class      Certificate Pass-    Certificate       Interest       Principal         Current
Class      CUSIP     Description      Through Rate         Balance      Distribution    Distribution    Realized Loss
- ------   ---------   -----------   -----------------   --------------   ------------    -------------   -------------
                                                                                   
  A      81744FBF3       SEN           2.46125%        638,664,181.87   1,309,926.86    26,420,094.06        0.00
 X-1     81744FBG1       SEN           0.80000%                  0.00     351.399.59             0.00        0.00
 X-2     81744FBH9       SEN           0.75337%                  0.00     400,958.73             0.00        0.00
 X-B     81744FBJ5       SEN           0.37941%                  0.00       7,260.10             0.00        0.00
 B-1     81744FBK2       SUB           3.35000%         14,612,000.00      40,791.83             0.00        0.00
 B-2     81744FBL0       SUB           3.75000%          8,350,000.00      26,093.75             0.00        0.00
 B-3     81744FBM8       SUB           3.87487%          4,175,000.00      13,481.33             0.00        0.00
 B-4     81744FBN6       SUB           3.87487%          2,509,000.00       8,101.71             0.00        0.00
 B-5     81744FBP1       SUB           3.87487%          2,088,000.00       6,742.28             0.00        0.00
 B-6     81744FBQ9       SUB           3.87487%          3,757,983.00      12,134.75             0.00        0.00
 A-R     81744FBR7       RES           2.77482%                  0.00           0.00             0.00        0.00
                                                       --------------   ------------    -------------        ----
Totals                                                 674,156,164.87   2,176,890.93    26,420,094.06        0.00
                                                       --------------   ------------    -------------        ----


           Ending Certificate       Total         Cumulative
Class            Balance         Distribution    Realized Loss
- ------     ------------------    -------------   -------------
                                        
  A           612,244,087.81     27,730,020.92       0.00
 X-1                    0.00        351,399.59       0.00
 X-2                    0.00        400,958.73       0.00
 X-B                    0.00          7,260.10       0.00
 B-1           14,612,000.00         40,791.83       0.00
 B-2            8,350,000.00         26,093.75       0.00
 B-3            4,175,000.00         13,481.33       0.00
 B-4            2,509,000.00          8,101.71       0.00
 B-5            2,088,000.00          6,742.28       0.00
 B-6            3,757,983.00         12,134.75       0.00
 A-R                    0.00              0.00       0.00
              --------------     -------------       ----
Totals        647,736,070.81     28,596,984.99       0.00
              --------------     -------------       ----


All distributions required by the Pooling and Servicing Agreement have been
calculated by the Certificate Administrator on behalf of the Trustee.

                        PRINCIPAL DISTRIBUTION STATEMENT



                             Beginning       Scheduled     Unscheduled
         Original Face      Certificate      Principal      Principal                 Realized   Total Principal
Class        Amount          Balance       Distribution    Distribution   Accretion   Loss (1)      Reduction
- ------   --------------   --------------   ------------   -------------   ---------   --------   ---------------
                                                                            
  A      799,511,000.00   638,664,181.87       0.00       24,420,094.06      0.00       0.00      24,420,094.06
 X-1               0.00             0.00       0.00                0.00      0.00       0.00               0.00
 X-2               0.00             0.00       0.00                0.00      0.00       0.00               0.00
 X-B               0.00             0.00       0.00                0.00      0.00       0.00               0.00
 B-1      14,612,000.00    14,612,000.00       0.00                0.00      0.00       0.00               0.00
 B-2       8,350,000.00     8,350,000.00       0.00                0.00      0.00       0.00               0.00
 B-3       4,175,000.00     4,175,000.00       0.00                0.00      0.00       0.00               0.00
 B-4       2,509,000.00     2,509,000.00       0.00                0.00      0.00       0.00               0.00
 B-5       2,088,000.00     2,088,000.00       0.00                0.00      0.00       0.00               0.00
 B-6       3,757,983.00     3,757,983.00       0.00                0.00      0.00       0.00               0.00
 A-R             100.00             0.00       0.00                0.00      0.00       0.00               0.00
         --------------   --------------       ----       -------------      ----       ----      -------------
Totals   835,003,083.00   674,156,164.87       0.00       24,420,094.06      0.00       0.00      26,420,094.06
         --------------   --------------       ----       -------------      ----       ----      -------------


         Ending Certificate   Ending Certificate   Total Principal
Class          Balance             Percentage        Distribution
- ------   ------------------   ------------------   ---------------
                                          
  A        612,244,087.81         0.76577319        24,420,094.06
 X-1                 0.00         0.00000000                 0.00
 X-2                 0.00         0.00000000                 0.00
 X-B                 0.00         0.00000000                 0.00
 B-1        14,612,000.00         1.00000000                 0.00
 B-2         8,350,000.00         1.00000000                 0.00
 B-3         4,175,000.00         1.00000000                 0.00
 B-4         2,509,000.00         1.00000000                 0.00
 B-5         2,088,000.00         1.00000000                 0.00
 B-6         3,757,983.00         1.00000000                 0.00
 A-R                 0.00         0.00000000                 0.00
           --------------         ----------        -------------
Totals     647,736,070.81         0.77572896        26,420,094.06
           --------------         ----------        -------------


(1) Amount does not include excess special hazard, bankruptcy, or fraud losses
unless otherwise disclosed. Please refer to the prospectus supplement for a full
description.



                    PRINCIPAL DISTRIBUTION FACTORS STATEMENT



                           Beginning      Scheduled      Unscheduled
        Original Face     Certificate     Principal       Principal                  Realized    Total Principal
Class      Amount           Balance      Distribution   Distribution    Accretion    Loss (3)       Reduction
- -----   --------------   -------------   ------------   ------------   ----------   ----------   ---------------
                                                                            
  A     799,511,000.00    798.81850515    0.00000000     33.04531652   0.00000000   0.00000000     33.04531652
 X-1              0.00      0.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 X-2              0.00      0.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 X-B              0.00      0.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 B-1     14,612,000.00   1000.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 B-2      8,350,000.00   1000.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 B-3      4,175,000.00   1000.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 B-4      2,509,000.00   1000.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 B-5      2,088,000.00   1000.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 B-6      3,757,983.00   1000.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000
 A-R            100.00      0.00000000    0.00000000      0.00000000   0.00000000   0.00000000      0.00000000


         Ending Certificate   Ending Certificate   Total Principal
Class         Balance             Percentage         Distribution
- -----   -------------------   ------------------   ---------------
                                          
  A         765.77318862          0.76577319         33.04531652
 X-1          0.00000000          0.00000000          0.00000000
 X-2          0.00000000          0.00000000          0.00000000
 X-B          0.00000000          0.00000000          0.00000000
 B-1       1000.00000000          1.00000000          0.00000000
 B-2       1000.00000000          1.00000000          0.00000000
 B-3       1000.00000000          1.00000000          0.00000000
 B-4       1000.00000000          1.00000000          0.00000000
 B-5       1000.00000000          1.00000000          0.00000000
 B-6       1000.00000000          1.00000000          0.00000000
 A-R          0.00000000          0.00000000          0.00000000


(3) Amount does not include excess special hazard, bankruptcy, or fraud losses
unless otherwise disclosed. Please refer to the prospectus supplement for a full
description.

                         INTEREST DISTRIBUTION STATEMENT



                                                Beginning                     Payment of                   Non-
                                               Certificate/       Current       Unpaid      Current    Supported
         Original Face         Current           Notional         Accrued      Interest     Interest    Interest   Realized
 Class      Amount        Certificate Rate       Balance         Interest      Shortfall   Shortfall   Shortfall   Loss (4)
- ------   --------------   ----------------   ---------------   ------------   ----------   ---------   ---------   --------
                                                                                           
   A     799,511,000.00       2.46125%       638,664,181.87    1,309,926.85      0.00         0.00       (0.01)      0.00
  X-1              0.00       0.80000%       527,099,373.98      351,399.58      0.00         0.00        0.00       0.00
  X-2              0.00       0.75337%       638,664,181.87      400,958.73      0.00         0.00        0.00       0.00
  X-B              0.00       0.37941%        22,962,000.00        7,260.10      0.00         0.00        0.00       0.00
  B-1     14,612,000.00       3.35000%        14,612,000.00       40,791.83      0.00         0.00        0.00       0.00
  B-2      8,350,000.00       3.75000%         8,350,000.00       26,093.75      0.00         0.00        0.00       0.00
  B-3      4,175,000.00       3.87487%         4,175,000.00       13,481.33      0.00         0.00        0.00       0.00
  B-4      2,509,000.00       3.87487%         2,509,000.00        8,101.71      0.00         0.00        0.00       0.00
  B-5      2,088,000.00       3.87487%         2,088,000.00        6,742.28      0.00         0.00        0.00       0.00
  B-6      3,757,983.00       3.87487%         3,757,983.00       12,134.75      0.00         0.00        0.00       0.00
  A-R            100.00       2.77482%                 0.00            0.00      0.00         0.00        0.00       0.00
         --------------                                        ------------      ----         ----       -----       ----
Totals   835,003,083.00                                        2,176,890.91      0.00         0.00       (0.01)      0.00
         --------------                                        ------------      ----         ----       -----       ----


                             Remaining        Ending
                              Unpaid      Certificate/
           Total Interest    Interest      Notational
 Class      Distribution     Shortfall       Balance
- ------    ---------------   ----------   --------------
                                
   A        1,309,926.86       0.00      612,244,087.81
  X-1          31,399.59       0.00      507,261,503.29
  X-2         400,958.73       0.00      612,244,087.81
  X-B           7,260.10       0.00       22,962,000.00
  B-1          40,791.83       0.00       14,612,000.00
  B-2          26,093.75       0.00        8,350,000.00
  B-3          13,481.33       0.00        4,175,000.00
  B-4           8,101.71       0.00        2,509,000.00
  B-5           6,742.28       0.00        2,088,000.00
  B-6          12,134.75       0.00        3,757,983.00
  A-R               0.00       0.00                0.00
            ------------       ----
Totals      2,176,890.93       0.00
            ------------       ----


(4) Amount does not include excess special hazard, bankruptcy, or fraud losses
unless otherwise disclosed. Please refer to the prospectus supplement for a full
description.



                     INTEREST DISTRIBUTION FACTORS STATEMENT



                                                                            Payment of                    Non-
                           Current        Beginning                           Unpaid       Current      Supported
Class   Original Face    Certificate     Certificate/     Current Accrued    Interest      Interest     Interest     Realized
 (5)        Amount          Rate       Notional Balance       Interest      Shortfall    Shortfall      Shortfall     Loss (6)
- -----   --------------   -----------   ----------------   ---------------   ----------   ----------   ------------   ----------
                                                                                             
  A     799,511,000.00     2.46125%       798.81850515       1.63841004     0.00000000   0.00000000   (0.00000001)   0.00000000
 X-1              0.00     0.80000%       659.27720066       0.43951813     0.00000000   0.00000000    0.00000000    0.00000000
 X-2              0.00     0.75337%       798.81850515       0.50150496     0.00000000   0.00000000    0.00000000    0.00000000
 X-B              0.00     0.37941%      1000.00000000       0.31617890     0.00000000   0.00000000    0.00000000    0.00000000
 B-1     14,612,000.00     3.35000%      1000.00000000       2.79166644     0.00000000   0.00000000    0.00000000    0.00000000
 B-2      8,350,000.00     3.75000%      1000.00000000       3.12500000     0.00000000   0.00000000    0.00000000    0.00000000
 B-3      4,175,000.00     3.87487%      1000.00000000       3.22906108     0.00000000   0.00000000    0.00000000    0.00000000
 B-4      2,509,000.00     3.87487%      1000.00000000       3.22905939     0.00000000   0.00000000    0.00000000    0.00000000
 B-5      2,088,000.00     3.87487%      1000.00000000       3.22906130     0.00000000   0.00000000    0.00000000    0.00000000
 B-6      3,757,983.00     3.87487%      1000.00000000       3.22905931     0.00000000   0.00000000    0.00000000    0.00000000
 A-R            100.00     2.77482%         0.00000000       0.00000000     0.00000000   0.00000000    0.00000000    0.00000000


                          Remaining
                           Unpaid
Class   Total Interest    Interest    Ending Certificate/
 (5)      Distribution    Shortfall   Notational Balance
- -----   --------------   ----------   -------------------
                             
  A       1.63841005     0.00000000       765.77318862
 X-1      0.43951814     0.00000000       634.46469566
 X-2      0.50150496     0.00000000       765.77318862
 X-B      0.31617890     0.00000000      1000.00000000
 B-1      2.79166644     0.00000000      1000.00000000
 B-2      3.12500000     0.00000000      1000.00000000
 B-3      3.22906108     0.00000000      1000.00000000
 B-4      3.22905939     0.00000000      1000.00000000
 B-5      3.22906130     0.00000000      1000.00000000
 B-6      3.22905931     0.00000000      1000.00000000
 A-R      0.00000000     0.00000000         0.00000000


(5) Per $1 denomination

(6) Amount does not include excess special hazard, bankruptcy, or fraud losses
unless otherwise disclosed. Please refer to the prospectus supplement for a full
description.

                       CERTIFICATEHOLDER ACCOUNT STATEMENT

                               CERTIFICATE ACCOUNT


                                                                            
Beginning Balance                                                                       0.00

Deposits
            Payments of Interest and Principal                                 28,812,395.82
            Liquidations, Insurance Proceeds, Reserve Funds                             0.00
            Proceeds from Repurchased Loans                                             0.00
            Other Amounts (Servicer Advances)                                           0.00
            Realized Losses (Gains, Subsequent Expenses & Recoveries)                   0.00
            Prepayment Penalties                                                        0.00
                                                                               -------------
Total Deposits                                                                 28,812,395.82

Withdrawals
            Reimbursement for Servicer Advances                                         0.00
            Payment of Service Fee                                                215,410.83
            Payment of Interest and Principal                                  28,596,984.99
                                                                               -------------
Total Withdrawals (Pool Distribution Amount)                                   28,812,395.82

Ending Balance                                                                          0.00
                                                                               =============




                    PREPAYMENT/CURTAILMENT INTEREST SHORTFALL


                                                                    
Total Prepayment/Curtailment Interest Shortfall                        0.00
Servicing Fee Support                                                  0.00
                                                                       ----

Non-Supported Prepayment Curtailment Interest Shortfall                0.00
                                                                       ====


                                 SERVICING FEES


                                                              
Gross Servicing Fee                                              211,197.36
Master Servicing Fee                                               4,213.47
Supported Prepayment/Curtailment Interest Shortfall                    0.00
                                                                 ----------

Net Servicing Fee                                                215,410.83
                                                                 ==========


                                 OTHER ACCOUNTS



                          Beginning      Current       Current     Ending
     Account Type          Balance     Withdrawals    Deposits     Balance
- ---------------------     ---------    -----------    --------    --------
                                                      
Class X-1 Sub Account     4,500.00        0.00          0.00      4,500.00
Class X-2 Sub Account     4,500.00        0.00          0.00      4,500.00
Class X-B Sub Account     1,000.00        0.00          0.00      1,000.00



             LOAN STATUS STRATIFICATION/CREDIT ENHANCEMENT STATEMENT





                  DELINQUENT
- ----------------------------------------------
                   No. of           Principal
                   Loans             Balance
                            
0-29 Days            0                    0.00
30 Days             15            3,815,665.06
60 Days              1              294,751.49
90 Days              0                    0.00
120 Days             0                    0.00
150 Days             1              138,400.00
180+ Days            0                    0.00
                   ---            ------------
                    17            4,248,816.55

                   No. of           Principal
                   Loans             Balance

0-29 Days         0.000000%        0.000000%
30 Days           0.730282%        0.589073%
60 Days           0.048685%        0.045505%
90 Days           0.000000%        0.000000%
120 Days          0.000000%        0.000000%
150 Days          0.048685%        0.021367%
180+ Days         0.000000%        0.000000%
                  --------         --------
                  0.827653%        0.655944%




                  BANKRUPTCY
- ----------------------------------------------
                   No. of          Principal
                   Loans            Balance
                             
0-29 Days            0                0.00
30 Days              0                0.00
60 Days              0                0.00
90 Days              0                0.00
120 Days             0                0.00
150 Days             0                0.00
180+ Days            0                0.00
                   ---                ----
                     0                0.00

                   No. of          Principal
                   Loans            Balance

0-29 Days         0.000000%        0.000000%
30 Days           0.000000%        0.000000%
60 Days           0.000000%        0.000000%
90 Days           0.000000%        0.000000%
120 Days          0.000000%        0.000000%
150 Days          0.000000%        0.000000%
180+ Days         0.000000%        0.000000%
                  --------         --------
                  0.000000%        0.000000%




                  FORECLOSURE
- ----------------------------------------------
                   No. of          Principal
                   Loans            Balance
                             
0-29 Days            0               0.00
30 Days              0               0.00
60 Days              0               0.00
90 Days              0               0.00
120 Days             0               0.00
150 Days             0               0.00
180+ Days            0               0.00
                   ---               ----
                     0               0.00

                   No. of          Principal
                   Loans            Balance

0-29 Days         0.000000%        0.000000%
30 Days           0.000000%        0.000000%
60 Days           0.000000%        0.000000%
90 Days           0.000000%        0.000000%
120 Days          0.000000%        0.000000%
150 Days          0.000000%        0.000000%
180+ Days         0.000000%        0.000000%
                  --------         --------
                  0.000000%        0.000000%




                     REO
- ----------------------------------------------
                   No. of          Principal
                   Loans            Balance
                             
0-29 Days            0               0.00
30 Days              0               0.00
60 Days              0               0.00
90 Days              0               0.00
120 Days             0               0.00
150 Days             0               0.00
180+ Days            0               0.00
                   ---               ----
                     0               0.00

                   No. of          Principal
                   Loans            Balance

0-29 Days         0.000000%        0.000000%
30 Days           0.000000%        0.000000%
60 Days           0.000000%        0.000000%
90 Days           0.000000%        0.000000%
120 Days          0.000000%        0.000000%
150 Days          0.000000%        0.000000%
180+ Days         0.000000%        0.000000%
                  --------         --------
                  0.000000%        0.000000%




                     TOTAL
- ----------------------------------------------
                   No. of          Principal
                   Loans            Balance
                            
0-29 Days             0                   0.00
30 Days              15           3,815,665.06
60 Days               1             294,751.49
90 Days               0                   0.00
120 Days              0                   0.00
150 Days              1             138,400.00
180+ Days             0                   0.00
                    ---           ------------
                     17           4,248,816.55

                   No. of          Principal
                   Loans            Balance

0-29 Days         0.000000%        0.000000%
30 Days           0.730282%        0.589073%
60 Days           0.048685%        0.045505%
90 Days           0.000000%        0.000000%
120 Days          0.000000%        0.000000%
150 Days          0.048685%        0.021367%
180+ Days         0.000000%        0.000000%
                  --------         --------
                  0.827653%        0.655944%



                                                                                                         
Current Period Class A Insufficient Funds:  0.00  Principal Balance of Contaminated Properties  0.00  Periodic Advance  0.00




                Original $       Original%         Current $         Current %       Current Class %      Prepayment %
              -------------     -----------      -------------      -----------      ---------------      ------------
                                                                                        
Class A       35,491,983.00     4.25052119%      35,491,983.00      5.47938961%        94.520610%           0.000000%
Class X-1     35,491,983.00     4.25052119%      35,491,983.00      5.47938961%         0.000000%           0.000000%
Class X-2     35,491,983.00     4.25052119%      35,491,983.00      5.47938961%         0.000000%           0.000000%
Class B-1     20,879,983.00     2.50058753%      20,879,983.00      3.22353253%         2.255857%          41.169861%
Class B-2     12,529,983.00     1.50059123%      12,529,983.00      1.93442724%         1.289105%          23.526440%
Class B-3      8,354,983.00     1.00059307%       8,354,983.00      1.28987459%         0.644553%          11.763220%
Class B-4      5,845,983.00     0.70011514%       5,845,983.00      0.90252547%         0.387349%           7.069202%
Class B-5      3,757,983.00     0.45005618%       3,757,983.00      0.58017195%         0.322354%           5.883019%
Class B-6              0.00     0.00000000%               0.00      0.00000000%         0.580172%          10.588259%


Please refer to the prospectus supplement for a full description of loss
exposure



                              COLLATERAL STATEMENT



Collateral Description                                           Mixed Arm
                                                            
Weighted Average Gross Coupon                                        4.258304%
Weighted Average Net Coupon                                          3.882372%
Weighted Average Pass-Through Rate                                   3.874872%
Weighted Average Maturity (Stepdown Calculation)                          331

Beginning Scheduled Collateral Loan Count                               2,122
Number of Loans Paid in Full                                               68
Ending Scheduled Collateral Loan Count                                  2,054

Beginning Scheduled Collateral Balance                         674,156,165.61
Ending Scheduled Collateral Balance                            647,736,071.55
Ending Actual Collateral Balance at 31-Mar-2005                647,741,093.28

Monthly P&I Constant                                             2,392,301.74
Special Servicing Fee                                                    0.00
Prepayment Penalties                                                     0.00
Realization Loss Amount                                                  0.00
Cumulative Realized Loss                                                 0.00

Class A Optimal Amount                                          28,489,639.32

Ending Scheduled Balance for Premium Loans                     647,736,071.55

Scheduled Principal                                                      0.00
Unscheduled Principal                                           26,420,094.06




MISCELLANEOUS REPORTING
                                                            
One-Month Libor Loan Balance'                                   92,639,640.05
Six-Month Libor Loan Balance                                   555,096,431.50
Prorata Senior Percentage                                           94.735347%
Senior Percentage                                                  100.000000%
Senior Prepayment Percentage                                       100.000000%
Subordinate Percentage                                               0.000000%
Subordinate Prepayment Percentage                                    0.000000%