NORWEST ASSET SECURITIES CORP MORT PASS THR CERT SER 1997-21
8-K, 1998-04-23
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



Date of Report:  December 23, 1997
- ----------------------------------
(Date of earliest event reported)

Commission File No. 333-21263




                      Norwest Asset Securities Corporation
- --------------------------------------------------------------------------------



         Delaware                                         52-1972128
- --------------------------------------------------------------------------------
 (State of Incorporation)                   (I.R.S. Employer Identification No.)




7485 New Horizon Way,  Frederick,  Maryland                       21703 
- --------------------------------------------------------------------------------
Address of principal executive offices                          (Zip Code)




                                 (301) 846-8881
- --------------------------------------------------------------------------------
               Registrant's Telephone Number, including area code





- --------------------------------------------------------------------------------
(Former  name,  former  address and former  fiscal year,  if changed  since last
report)



<PAGE>



ITEM 5.  Other Events

     On December 23, 1997,  Norwest  Asset  Securities  Corporation,  a Delaware
corporation (the "Registrant"),  sold Mortgage Pass-Through Certificates, Series
1997-21, Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-6, Class
A-7,  Class  A-8,  Class  A-R,  Class M,  Class B-1 and Class B-2 (the  "Offered
Certificates"),  having an aggregate original principal balance of $347,108,457.
The  Offered  Certificates  were  issued  pursuant  to a Pooling  and  Servicing
Agreement,  dated as of December 23, 1997,  among the  Registrant,  Norwest Bank
Minnesota,  National  Association,  as master servicer (the "Master Servicer" or
"Norwest Bank"),  United States Trust Company of New York, as trustee, and First
Union National Bank, as trust  administrator (the "Agreement"),  a copy of which
is  filed as an  exhibit  hereto.  Mortgage  Pass-Through  Certificates,  Series
1997-21,  Class  A-PO  Certificates  (having  an  initial  principal  balance of
$109,542.55),  Class A-WIO Certificates (having no principal balance), and Class
B-3, Class B-4 and Class B-5 Certificates, having an aggregate initial principal
balance of $2,971,562.06  (the "Private Class B Certificates" and, together with
the Class A-PO and Class A-WIO  Certificates and the Offered  Certificates,  the
"Certificates"), were also issued pursuant to the Agreement.

     As of the date of initial issuance,  the Offered Certificates  evidenced an
approximate  99.12%  undivided  interest in a trust fund (the  "Trust  Estate"),
consisting principally of a pool of fixed interest rate,  conventional,  monthly
pay, fully-amortizing, one-to four-family residential first mortgage loans which
may include loans secured by shares issued by cooperative housing  corporations.
The  remaining  undivided  interests  in the Trust  Estate are  evidenced by the
Private  Class B  Certificates,  distributions  on  which  are  subordinated  to
distributions  on the Offered  Certificates,  and the Class A-PO and Class A-WIO
Certificates.

     Interest  on  the  Offered   Certificates   will  be  distributed  on  each
Distribution  Date (as  defined  in the  Agreement).  Monthly  distributions  in
reduction of the principal balance of the Offered Certificates will be allocated
to the Offered  Certificates  in accordance with the priorities set forth in the
Agreement.  Distributions  of interest and in reduction of principal  balance on
any  Distribution  Date will be made to the  extent  that the Pool  Distribution
Amount is sufficient therefor.

     An  election  will be made to treat  the Trust  Estate a REMIC for  federal
income tax purposes (the  "REMIC").  The Class A-1,  Class A-2, Class A-3, Class
A-4, Class A-5, Class A-6, Class A-7, Class A-8, Class A-WIO,  Class A-PO, Class
M, Class B-1, Class B-2, Class B-3, Class B-4 and Class B-5 Certificates will be
treated as "regular  interests" in the REMIC and the Class A-R Certificate  will
be treated as the "residual interest" in the REMIC.



<PAGE>



ITEM 7.  Financial Statements and Exhibits

                   (c) Exhibits

Item 601(a)
of Regulation S-K
Exhibit No.                                          Description
- -----------                                          -----------

  (EX-4)                           Pooling and Servicing Agreement,  dated as of
                                   December  23,  1997,   among   Norwest  Asset
                                   Securities    Corporation,    Norwest    Bank
                                   Minnesota,   National   Association,   United
                                   States Trust Company of New York, as trustee,
                                   and  First  Union  National  Bank,  as  trust
                                   administrator.



<PAGE>



     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                    NORWEST ASSET SECURITIES CORPORATION

December 23, 1997

                                    /s/ Patrick Greene
                                    ------------------
                                    Patrick Greene
                                    Assistant Vice President




<PAGE>




                                INDEX TO EXHIBITS



                                                  Paper (P) or
                                                   Electronic (E)
Exhibit No.                                           Filing
- -----------                                         -----------
                                                        E

   (EX-4)                          Pooling and  Servicing  Agreement,  dated as
                                   of  December  23,  1997 among  Norwest  Asset
                                   Securities    Corporation,    Norwest    Bank
                                   Minnesota,   National   Association,   United
                                   States Trust Company of New York, as trustee,
                                   and  First  Union  National  Bank,  as  trust
                                   administrator.






                      NORWEST ASSET SECURITIES CORPORATION

                                    (Seller)

                                       and

                  NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION

                                (Master Servicer)

                                       and

                     UNITED STATES TRUST COMPANY OF NEW YORK

                                    (Trustee)

                                       and

                            FIRST UNION NATIONAL BANK

                              (Trust Administrator)



                         POOLING AND SERVICING AGREEMENT

                          Dated as of December 23, 1997

                                 $349,586,561.61




                       Mortgage Pass-Through Certificates
                                 Series 1997-21









<PAGE>

                                TABLE OF CONTENTS

                                                                           

                                    ARTICLE I

                                   DEFINITIONS
Section 1.01. Definitions.......................................................
Section 1.02. Acts of Holders...................................................
Section 1.03. Effect of Headings and Table of Contents..........................
Section 1.04. Benefits of Agreement.............................................

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES
Section 2.01. Conveyance of Mortgage Loans......................................
Section 2.02. Acceptance by Trust Administrator.................................
Section 2.03. Representations and Warranties of the Master 
              Servicer and the Seller..........................3
Section 2.04. Execution and Delivery of Certificates............................
Section 2.05. Designation of Certificates; Designation of  
              Startup Day and Latest Possible Maturity Date....10

                                   ARTICLE III

                       ADMINISTRATION OF THE TRUST ESTATE:
                         SERVICING OF THE MORTGAGE LOANS
Section 3.01. Certificate Account...............................................
Section 3.02. Permitted Withdrawals from the Certificate Account................
Section 3.03. Advances by Master Servicer and Trust Administrator...............
Section 3.04. Trust Administrator to Cooperate;  Release of Owner 
              Mortgage Loan Files.......................4
Section 3.05. Reports to the Trustee and Trust Administrator; 
              Annual Compliance Statements..................6
Section 3.06. Title, Management and Disposition of Any REO Mortgage Loan........
Section 3.07. Amendments to Servicing Agreements,  Modification 
              of Standard Provisions......................7
Section 3.08. Oversight of Servicing............................................
Section 3.09. Termination and Substitution of Servicing Agreements..............
Section 3.10. 1934 Act Reports..................................................

                               ARTICLE IV

                   DISTRIBUTIONS IN RESPECT OF CERTIFICATES;
                        PAYMENTS TO CERTIFICATEHOLDERS;
                             STATEMENTS AND REPORTS

Section 4.01. Distributions.....................................................
Section 4.02. Allocation of Realized Losses.....................................
Section 4.03. Paying Agent......................................................
Section 4.04. Statements to Certificateholders;  Report to the 
              Trust Administrator and the Seller...........11
Section 4.05. Reports to Mortgagors and the Internal Revenue Service............
Section 4.06  Calculation of Amounts; Binding Effect of 
              Interpretations and Actions of Master Servicer....................

                                    ARTICLE V

                                THE CERTIFICATES

Section 5.01. The Certificates..................................................
Section 5.02. Registration of Transfer and Exchange of Certificates.............
Section 5.03. Mutilated, Destroyed, Lost or Stolen Certificates.................
Section 5.04. Persons Deemed Owners.............................................
Section 5.05. Access to List of Certificateholders' Names and Addresses.........
Section 5.06. Maintenance of Office or Agency...................................
Section 5.07. Definitive Certificates...........................................
Section 5.08. Notices to Clearing Agency........................................

                               ARTICLE VI........

                       THE SELLER AND THE MASTER SERVICER

Section 6.01. Liability of the Seller and the Master Servicer...................
Section 6.02. Merger or Consolidation of the Seller or the Master Servicer......
Section 6.03. Limitation on Liability of the Seller, the Master 
              Servicer and Others...............................................
Section 6.04. Resignation of the Master Servicer................................
Section 6.05. Compensation to the Master Servicer...............................
Section 6.06. Assignment or Delegation of Duties by Master Servicer.............
Section 6.07. Indemnification of Trustee, Trust Administrator 
              and Seller by Master Servicer.....................................

                                   ARTICLE VII

                                     DEFAULT

Section 7.01. Events of Default.................................................
Section 7.02. Other Remedies of Trustee.........................................
Section 7.03. Directions by Certificateholders and  Duties of 
              Trustee During Event of Default...................................
Section 7.04. Action upon Certain Failures of the  Master 
              Servicer and upon Event of Default................................
Section 7.05. Trust Administrator to Act; Appointment of Successor..............
Section 7.06. Notification to Certificateholders................................

                                  ARTICLE VIII

               CONCERNING THE TRUSTEE AND THE TRUST ADMINISTRATOR

Section 8.01. Duties of Trustee and Trust Administrator.........................
Section 8.02. Certain Matters Affecting the Trustee and 
              the Trust Administrator...........................................
Section 8.03. Neither Trustee nor Trust Administrator 
              Required to Make Investigation....................................
Section 8.04. Neither Trustee nor Trust Administrator Liable 
              for Certificates or Mortgage Loans................................
Section 8.05. Trustee and Trust Administrator May Own Certificates..............
Section 8.06. The Master Servicer to Pay Fees and Expenses......................
Section 8.07. Eligibility Requirements..........................................
Section 8.08. Resignation and Removal...........................................
Section 8.09. Successor.........................................................
Section 8.10. Merger or Consolidation...........................................
Section 8.11. Authenticating Agent..............................................
Section 8.12. Separate Trustees and Co-Trustees.................................
Section 8.13. Appointment of Custodians.........................................
Section 8.14. Tax Matters; Compliance with REMIC Provisions.....................
Section 8.15. Monthly Advances..................................................

                                   ARTICLE IX

                                   TERMINATION

Section 9.01. Termination upon Purchase by the  Seller or 
              Liquidation of All Mortgage Loans.................................
Section 9.02. Additional Termination Requirements...............................

                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

Section 10.01. Amendment........................................................
Section 10.02. Recordation of Agreement.........................................
Section 10.03. Limitation on Rights of Certificateholders.......................
Section 10.04. Governing Law; Jurisdiction......................................
Section 10.05. Notices..........................................................
Section 10.06. Severability of Provisions.......................................
Section 10.07. Special Notices to Rating Agencies...............................
Section 10.08. Covenant of Seller...............................................
Section 10.09. Recharacterization...............................................

                                   ARTICLE XI

                             TERMS FOR CERTIFICATES

Section 11.01. Class A Fixed Pass-Through Rate..................................
Section 11.02. Cut-Off Date.....................................................
Section 11.03. Cut-Off Date Aggregate Principal Balance.........................
Section 11.04. Original Class A Percentage......................................
Section 11.05. Original Class A Subclass Principal Balances.....................
Section 11.06. Original Class A Non-PO Principal Balance........................
Section 11.07. Original Subordinated Percentage.................................
Section 11.08. Original Class M Percentage......................................
Section 11.09. Original Class M Principal Balance...............................
Section 11.10  Original Class M Fractional Interest.............................
Section 11.11  Original Class B-1 Percentage....................................
Section 11.12. Original Class B-2 Percentage....................................
Section 11.13. Original Class B-3 Percentage....................................
Section 11.14. Original Class B-4 Percentage....................................
Section 11.15. Original Class B-5 Percentage....................................
Section 11.16. Original Class B Principal Balance...............................
Section 11.17. Original Class B Subclass Principal Balances.....................
Section 11.18. Original Class B-1 Fractional Interest...........................
Section 11.19. Original Class B-2 Fractional Interest...........................
Section 11.20. Original Class B-3 Fractional Interest...........................
Section 11.21. Original Class B-4 Fractional Interest...........................
Section 11.22. Closing Date.....................................................
Section 11.23. Right to Purchase................................................
Section 11.24. Wire Transfer Eligibility........................................
Section 11.25. Single Certificate...............................................
Section 11.26. Servicing Fee Rate...............................................
Section 11.27. Master Servicing Fee Rate........................................






<PAGE>

                                    EXHIBITS

EXHIBIT A-1 - Form of Face of Class A-1 Certificate

EXHIBIT A-2 - Form of Face of Class A-2 Certificate

EXHIBIT A-3 - Form of Face of Class A-3 Certificate

EXHIBIT A-4 - Form of Face of Class A-4 Certificate

EXHIBIT A-5 - Form of Face of Class A-5 Certificate

EXHIBIT A-6 - Form of Face of Class A-6 Certificate

EXHIBIT A-7 - Form of Face of Class A-7 Certificate

EXHIBIT A-8 - Form of Face of Class A-8 Certificate

EXHIBIT A-PO - Form of Face of Class A-PO Certificate

EXHIBIT A-WIO - Form of Face of Class A-WIO Certificate

EXHIBIT A-R - Form of Face of Class A-R Certificate

EXHIBIT B-1 - Form of Face of Class B-1 Certificate

EXHIBIT B-2 - Form of Face of Class B-2 Certificate

EXHIBIT B-3 - Form of Face of Class B-3 Certificate

EXHIBIT B-4 - Form of Face of Class B-4 Certificate

EXHIBIT B-5 - Form of Face of Class B-5 Certificate

EXHIBIT C - Form of Face of Class M Certificate

EXHIBIT D - Form of Reverse of Series 1997-21 Certificates

EXHIBIT E - Custodial Agreement

EXHIBIT F-1 - Schedule  of Mortgage  Loans  Serviced  by Norwest  Mortgage  from
locations other than Frederick, Maryland

EXHIBIT  F-2 - Schedule  of  Mortgage  Loans  Serviced  by Norwest  Mortgage  in
Frederick Maryland

EXHIBIT F-3 - Schedule of Mortgage Loans Serviced by Other Servicers

EXHIBIT G - Request for Release

EXHIBIT H - Affidavit  Pursuant to Section  860E(e)(4)  of the Internal  Revenue
Code of 1986, as amended, and for Non-ERISA Investors

EXHIBIT I - Letter from Transferor of Residual Certificates

EXHIBIT  J  -  Transferee's  Letter  (Class   [A-PO][A-WIO]  [B-3]  [B-4]  [B-5]
Certificates)

EXHIBIT K - Transferee's Letter (Class [M] [B-1] [B-2] Certificates)

EXHIBIT L - Servicing Agreements

EXHIBIT M - Form of Special Servicing Agreement



<PAGE>





     This  Pooling  and  Servicing  Agreement,  dated as of  December  23,  1997
executed  by NORWEST  ASSET  SECURITIES  CORPORATION,  as Seller,  NORWEST  BANK
MINNESOTA, NATIONAL ASSOCIATION, as Master Servicer, UNITED STATES TRUST COMPANY
OF NEW YORK, as Trustee and FIRST UNION NATIONAL BANK, as Trust Administrator.


                                WITNESSETH THAT:

     In consideration of the mutual agreements herein contained, the Seller, the
Master Servicer, the Trustee and the Trust Administrator agree as follows:

ARTICLE I

DEFINITIONS

Section 1.01.     Definitions.

     Whenever used herein,  the following words and phrases,  unless the context
otherwise requires, shall have the meanings specified in this Article.

     Accepted Master Servicing  Practices:  Accepted Master Servicing  Practices
shall consist of the customary and usual master  servicing  practices of prudent
master servicing  institutions  which service mortgage loans of the same type as
the  Mortgage  Loans  in  the  jurisdictions  in  which  the  related  Mortgaged
Properties are located,  regardless of the date upon which the related  Mortgage
Loans were originated.

     Adjusted Pool Amount:  With respect to any  Distribution  Date, the Cut-Off
Date Aggregate  Principal Balance of the Mortgage Loans minus the sum of (i) all
amounts in respect  of  principal  received  in  respect of the  Mortgage  Loans
(including,  without limitation,  amounts received as Monthly Payments, Periodic
Advances, Unscheduled Principal Receipts and Substitution Principal Amounts) and
distributed to Holders of the  Certificates  on such  Distribution  Date and all
prior  Distribution  Dates and (ii) the principal portion of all Realized Losses
(other than Debt Service  Reductions)  incurred on the  Mortgage  Loans from the
Cut-Off Date through the end of the month preceding such Distribution Date.

     Adjusted Pool Amount (PO Portion):  With respect to any Distribution  Date,
the sum of the amounts,  calculated as follows,  with respect to all Outstanding
Mortgage  Loans:  the product of (i) the PO Fraction for each such Mortgage Loan
and (ii)  the  remainder  of (A) the  Cut-Off  Date  Principal  Balance  of such
Mortgage  Loan minus (B) the sum of (x) all  amounts  in  respect  of  principal
received  in respect  of such  Mortgage  Loan  (including,  without  limitation,
amounts received as Monthly Payments,  Periodic Advances,  Unscheduled Principal
Receipts and Substitution  Principal  Amounts) and distributed to Holders of the
Certificates on such Distribution Date and all prior  Distribution Dates and (y)
the principal portion of any Realized Loss (other than a Debt Service Reduction)
incurred  on such  Mortgage  Loan from the Cut-Off  Date  through the end of the
month preceding such Distribution Date.

     Adjusted  Principal  Balance:  As to any Distribution  Date and the Class M
Certificates  or any Class B  Subclass,  the greater of (A) zero and (B) (i) the
principal  balance of such Class or Subclass  with respect to such  Distribution
Date minus (ii) the  Adjustment  Amount for such  Distribution  Date less,  with
respect to the Class M  Certificates,  the Class B  Principal  Balance  or, with
respect to any Class B Subclass, the Class B Subclass Principal Balances for any
Class B Subclasses with higher numerical designations.

     Adjustment  Amount:  For any Distribution  Date, the difference between (A)
the sum of the Class A Principal Balance,  Class M Principal Balance and Class B
Principal  Balance as of the related  Determination  Date and (B) the sum of (i)
the sum of the Class A Principal Balance,  Class M Principal Balance and Class B
Principal  Balance as of the  Determination  Date succeeding  such  Distribution
Date, (ii) the principal  portion of Excess Special Hazard Losses,  Excess Fraud
Losses and Excess  Bankruptcy  Losses allocated to the Certificates with respect
to such  Distribution  Date and (iii) the aggregate  amount that would have been
distributed to all Classes as principal in accordance  with Section  4.01(a) for
such  Distribution  Date without  regard to the provisos in the  definitions  of
Class M Optimal Principal Amount,  Class B-1 Optimal Principal Amount, Class B-2
Optimal Principal Amount,  Class B-3 Optimal Principal Amount, Class B-4 Optimal
Principal Amount and Class B-5 Optimal Principal Amount.

     Aggregate Current Bankruptcy Losses: With respect to any Distribution Date,
the sum of all  Bankruptcy  Losses  incurred on any of the Mortgage Loans in the
month preceding the month of such Distribution Date.

     Aggregate Current Fraud Losses:  With respect to any Distribution Date, the
sum of all  Fraud  Losses  incurred  on any of the  Mortgage  Loans in the month
preceding the month of such Distribution Date.

     Aggregate  Current Special Hazard Losses:  With respect to any Distribution
Date, the sum of all Special Hazard Losses incurred on any of the Mortgage Loans
in the month preceding the month of such Distribution Date.

     Aggregate  Foreclosure  Profits: As to any Distribution Date, the aggregate
amount of Foreclosure Profits with respect to all of the Mortgage Loans.

     Agreement:  This Pooling and  Servicing  Agreement and all  amendments  and
supplements hereto.

     Applicable  Unscheduled  Principal  Receipt  Period:  With  respect  to the
Mortgage Loans serviced by each Servicer and each of Full Unscheduled  Principal
Receipts and Partial Unscheduled  Principal Receipts,  the Unscheduled Principal
Receipt Period  specified on Schedule I hereto,  as amended from time to time by
the Master Servicer pursuant to Section 10.01(b) hereof.

     Authenticating  Agent:  Any  authenticating  agent  appointed  by the Trust
Administrator   pursuant  to  Section   8.11.   There  shall   initially  be  no
Authenticating Agent for the Certificates.

     Available Master Servicer  Compensation:  As to any Distribution  Date, the
sum of (a) the Master  Servicing Fee for such  Distribution  Date,  (b) interest
earned  through the business day preceding the applicable  Distribution  Date on
any  Prepayments  in Full remitted to the Master  Servicer and (c) the aggregate
amount of Month End Interest  remitted by the  Servicers to the Master  Servicer
pursuant to the related Servicing Agreements.

     Bankruptcy Code:  The Bankruptcy Code of 1978, as amended.

     Bankruptcy  Loss: With respect to any Mortgage Loan, a Deficient  Valuation
or Debt Service Reduction;  provided,  however, that a Bankruptcy Loss shall not
be deemed a Bankruptcy  Loss  hereunder so long as the  applicable  Servicer has
notified the Master  Servicer and the Trust  Administrator  in writing that such
Servicer is diligently  pursuing any remedies that may exist in connection  with
the  representations and warranties made regarding the related Mortgage Loan and
either (A) the related  Mortgage  Loan is not in default with regard to payments
due  thereunder or (B)  delinquent  payments of principal and interest under the
related  Mortgage  Loan  and  any  premiums  on any  applicable  primary  hazard
insurance  policy and any related  escrow  payments in respect of such  Mortgage
Loan are being  advanced  on a current  basis by such  Servicer  without  giving
effect to any Debt Service Reduction.

     Bankruptcy  Loss  Amount:  As of any  Distribution  Date prior to the first
anniversary of the Cut-Off Date, the Bankruptcy  Loss Amount will equal $100,000
minus the aggregate amount of Bankruptcy  Losses allocated solely to the Class B
Certificates  or,  following the  reduction of the Class B Principal  Balance to
zero,  solely to the Class M  Certificates  in accordance  with Section  4.02(a)
since  the  Cut-Off  Date.  As of any  Distribution  Date on or after  the first
anniversary  of the Cut-Off  Date,  an amount equal to (1) the lesser of (a) the
Bankruptcy  Loss Amount  calculated  as of the close of business on the Business
Day  immediately  preceding  the most recent  anniversary  of the  Cut-Off  Date
coinciding with or preceding such Distribution Date (the "Relevant Anniversary")
and (b) such lesser amount which, as determined on the Relevant Anniversary will
not cause any rated  Certificates  to be placed on credit  review  status (other
than for possible  upgrading)  by either  Rating  Agency minus (2) the aggregate
amount of Bankruptcy  Losses  allocated  solely to the Class B Certificates  or,
following the reduction of the Class B Principal  Balance to zero, solely to the
Class M  Certificates  in  accordance  with Section  4.02(a)  since the Relevant
Anniversary.  On and after the Cross-Over  Date the Bankruptcy Loss Amount shall
be zero.

     Beneficial Owner: With respect to a Book-Entry Certificate,  the Person who
is the  beneficial  owner of such  Book-Entry  Certificate,  as reflected on the
books of the Clearing Agency, or on the books of a Person maintaining an account
with such Clearing Agency (directly or as an indirect participant, in accordance
with the rules of such Clearing Agency), as the case may be.

     Book-Entry  Certificate:  The Class A-1,  Class A-2,  Class A-3, Class A-4,
Class A-5, Class A-6, Class A-7 and Class A-8 Certificates, beneficial ownership
and transfers of which shall be evidenced by, and made through,  book entries by
the Clearing Agency as described in Section 5.01(b).

     Business  Day:  Any day other  than (i) a Saturday  or a Sunday,  or (ii) a
legal holiday in the City of New York, State of Iowa,  State of Maryland,  State
of  Minnesota  or  State  of North  Carolina  or  (iii) a day on  which  banking
institutions  in the City of New York, or the State of Iowa,  State of Maryland,
State of Minnesota or State of North Carolina are authorized or obligated by law
or executive order to be closed.

     Certificate:  Any one of the Class A Certificates,  Class M Certificates or
Class B Certificates.

     Certificate  Account:  The trust account  established and maintained by the
Master  Servicer  in the name of the Master  Servicer  on behalf of the  Trustee
pursuant to Section 3.01. The Certificate Account shall be an Eligible Account.

     Certificate Register and Certificate Registrar:  Respectively, the register
maintained  pursuant to and the  registrar  provided  for in Section  5.02.  The
initial Certificate Registrar is the Trust Administrator.

     Certificateholder  or Holder:  The Person in whose  name a  Certificate  is
registered in the Certificate Register,  except that, solely for the purposes of
the taking of any action under Articles VII or VIII, any Certificate  registered
in the name of the Master Servicer, a Servicer or any affiliate thereof shall be
deemed not to be outstanding and the Voting Interest evidenced thereby shall not
be taken  into  account in  determining  whether  the  requisite  percentage  of
Certificates necessary to effect any such action has been obtained.

     Class: All  certificates  whose form is identical except for (i) variations
in the Percentage Interest evidenced thereby and (ii) in the case of the Class A
Certificates  and Class B Certificates,  variations in Subclass  designation and
other Subclass characteristics.

     Class A  Certificate:  Any one of the  Class  A-1  Certificates,  Class A-2
Certificates,   Class  A-3  Certificates,  Class  A-4  Certificates,  Class  A-5
Certificates,   Class  A-6  Certificates,  Class  A-7  Certificates,  Class  A-8
Certificates,  Class A-PO  Certificates,  Class A-WIO  Certificates or Class A-R
Certificate.

     Class A Certificateholder:  The registered holder of a Class A Certificate.

     Class A Distribution  Amount:  As to any  Distribution  Date, the aggregate
amount  distributable  to the  Subclasses  of Class A  Certificates  pursuant to
Paragraphs  first,   second,  third  and  fourth  of  Section  4.01(a)  on  such
Distribution Date.

     Class A Fixed  Pass-Through Rate: As to any Distribution Date, the rate per
annum set forth in Section 11.01.

     Class A Interest Accrual Amount:  As to any  Distribution  Date, the sum of
the Class A Subclass  Interest Accrual Amounts with respect to such Distribution
Date.

     Class A Loss Denominator:  As to any Determination Date, an amount equal to
the Class A Non-PO Principal Balance.

     Class A Non-PO Optimal  Amount:  As to any  Distribution  Date, the sum for
such Distribution Date of (i) the Class A Interest Accrual Amount,  (ii) the sum
of the Class A Subclass Unpaid Interest Shortfalls for each Class A Subclass and
(iii) the Class A Non-PO Optimal Principal Amount.

     Class A Non-PO Optimal Principal  Amount:  As to any Distribution  Date, an
amount equal to the sum, as to each Outstanding Mortgage Loan, of the product of
(x) the Non-PO Fraction with respect to such Mortgage Loan, and (y) the sum of:

               (i) the Class A Percentage  of (A) the  principal  portion of the
          Monthly  Payment  due on the Due Date  occurring  in the month of such
          Distribution  Date on such Mortgage  Loan,  less (B) if the Bankruptcy
          Loss Amount has been  reduced to zero,  the  principal  portion of any
          Debt Service Reduction with respect to such Mortgage Loan;

               (ii)  the  Class  A  Prepayment  Percentage  of  all  Unscheduled
          Principal  Receipts  that were  received by a Servicer with respect to
          such Mortgage Loan during the Applicable Unscheduled Principal Receipt
          Period relating to such  Distribution Date for each applicable type of
          Unscheduled Principal Receipt;

               (iii)  the  Class  A  Prepayment   Percentage  of  the  Scheduled
          Principal  Balance  of such  Mortgage  Loan  which,  during  the month
          preceding the month of such Distribution  Date, was repurchased by the
          Seller pursuant to Section 2.02 or 2.03; and

               (iv) the Class A Percentage of the excess of the unpaid principal
          balance of such Mortgage  Loan  substituted  for a defective  Mortgage
          Loan during the month  preceding the month in which such  Distribution
          Date  occurs  over the  unpaid  principal  balance  of such  defective
          Mortgage Loan, less the amount  allocable to the principal  portion of
          any unreimbursed  Periodic  Advances  previously made by the Servicer,
          the  Master  Servicer  or the Trust  Administrator  in respect of such
          defective Mortgage Loan.

     Class A Non-PO  Principal  Balance:  As of any date, an amount equal to the
Class A Principal  Balance  less the Class A Subclass  Principal  Balance of the
Class A-PO Certificates.

     Class A Non-PO Principal  Distribution Amount: As to any Distribution Date,
the aggregate amount  distributed in respect of the Class A Subclasses  pursuant
to Paragraph third clause (A) of Section 4.01(a).

     Class A Percentage:  As to any  Distribution  Date occurring on or prior to
the Cross-Over Date, the lesser of (i) 100% and (ii) the percentage  obtained by
dividing  the  Class  A  Non-PO   Principal   Balance   (determined  as  of  the
Determination Date preceding such Distribution Date) by the Pool Balance (Non-PO
Portion).  As to any  Distribution  Date occurring  subsequent to the Cross-Over
Date,  100% or such  lesser  percentage  which  will  cause  the  Class A Non-PO
Principal  Balance to decline to zero  following the  distribution  made on such
Distribution Date.

     Class A Prepayment Percentage: As to any Distribution Date to and including
the  Distribution  Date in December  2002,  100%.  As to any  Distribution  Date
subsequent to December 2002 to and including the  Distribution  Date in December
2003,  the  Class A  Percentage  as of such  Distribution  Date  plus 70% of the
Subordinated  Percentage as of such  Distribution  Date. As to any  Distribution
Date  subsequent  to December 2003 to and  including  the  Distribution  Date in
December 2004, the Class A Percentage as of such  Distribution  Date plus 60% of
the Subordinated Percentage as of such Distribution Date. As to any Distribution
Date  subsequent  to December 2004 to and  including  the  Distribution  Date in
December 2005, the Class A Percentage as of such  Distribution  Date plus 40% of
the Subordinated Percentage as of such Distribution Date. As to any Distribution
Date  subsequent  to December 2005 to and  including  the  Distribution  Date in
December 2006, the Class A Percentage as of such  Distribution  Date plus 20% of
the Subordinated Percentage as of such Distribution Date. As to any Distribution
Date subsequent to December 2006, the Class A Percentage as of such Distribution
Date.  The  foregoing  is  subject  to  the  following:  (i)  if  the  aggregate
distribution to Holders of Class A Certificates on any Distribution  Date of the
Class A  Prepayment  Percentage  provided  above  of (a)  Unscheduled  Principal
Receipts distributable on such Distribution Date would reduce the Class A Non-PO
Principal  Balance  below  zero,  the  Class A  Prepayment  Percentage  for such
Distribution Date shall be the percentage  necessary to bring the Class A Non-PO
Principal Balance to zero and thereafter the Class A Prepayment Percentage shall
be zero  and  (ii) if the  Class A  Percentage  as of any  Distribution  Date is
greater than the Original Class A Percentage,  the Class A Prepayment Percentage
for such Distribution Date shall be 100%.  Notwithstanding  the foregoing,  with
respect to any  Distribution  Date on which the following  criteria are not met,
the  reduction  of the Class A  Prepayment  Percentage  described  in the second
through  sixth  sentences of this  definition  of Class A Prepayment  Percentage
shall not be applicable with respect to such  Distribution  Date. In such event,
the Class A Prepayment  Percentage for such Distribution Date will be determined
in accordance with the applicable  provision,  as set forth in the first through
fifth  sentences  above,  which  was  actually  used to  determine  the  Class A
Prepayment  Percentage  for the  Distribution  Date  occurring  in the  December
preceding such  Distribution  Date (it being understood that for the purposes of
the  determination  of  the  Class  A  Prepayment  Percentage  for  the  current
Distribution  Date, the current Class A Percentage and  Subordinated  Percentage
shall be utilized). In order for the reduction referred to in the second through
sixth sentences to be applicable,  with respect to any Distribution Date (a) the
average  outstanding  principal  balance on such  Distribution  Date and for the
preceding five Distribution  Dates on the Mortgage Loans that were delinquent 60
days or more  (including  for this  purpose  any  payments  due with  respect to
Mortgage Loans in foreclosure  and REO Mortgage  Loans) must be less than 50% of
the current Class M Principal  Balance and the current Class B Principal Balance
and (b)  cumulative  Realized  Losses  shall not exceed (1) 30% of the  Original
Subordinated  Principal  Balance if such  Distribution  Date occurs  between and
including  January 2003 and December 2003, (2) 35% of the Original  Subordinated
Principal Balance if such Distribution Date occurs between and including January
2004 and December 2004, (3) 40% of the Original  Subordinated  Principal Balance
if such Distribution Date occurs between and including January 2005 and December
2005,  (4)  45%  of  the  Original   Subordinated   Principal  Balance  if  such
Distribution  Date occurs between and including  January 2006 and December 2006,
and (5) 50% of the Original Subordinated  Principal Balance if such Distribution
Date occurs during or after January 2007. With respect to any Distribution  Date
on which  the  Class A  Prepayment  Percentage  is  reduced  below  the  Class A
Prepayment Percentage for the prior Distribution Date, the Master Servicer shall
certify to the Trust  Administrator,  based upon  information  provided  by each
Servicer as to the Mortgage  Loans serviced by it that the criteria set forth in
the preceding sentence are met.

     Class A Principal  Balance:  As of any date,  an amount equal to the sum of
the Class A Subclass  Principal  Balances for the Class A-1 Certificates,  Class
A-2  Certificates,  Class A-3 Certificates,  Class A-4  Certificates,  Class A-5
Certificates,   Class  A-6  Certificates,  Class  A-7  Certificates,  Class  A-8
Certificates, Class A-PO Certificates and Class A-R Certificate.

     Class A Subclass: Any of the Subclasses of Class A Certificates  consisting
of the Class A-1 Certificates,  Class A-2 Certificates,  Class A-3 Certificates,
Class A-4 Certificates,  Class A-5 Certificates,  Class A-6 Certificates,  Class
A-7 Certificates,  Class A-8 Certificates,  Class A-PO Certificates, Class A-WIO
Certificates and Class A-R Certificate.

     Class A Subclass  Distribution  Amount: As to any Distribution Date and any
Class A Subclass,  the amount distributable to such Class A Subclass pursuant to
Paragraphs first, second, third and fourth of Section 4.01(a).

     Class A Subclass  Interest Accrual Amount:  As to any Distribution Date and
any Class A Subclass  (other than the Class A-WIO and Class A-PO  Certificates),
(i) the product of (a) 1/12th of the Class A Subclass Pass-Through Rate for such
Class A Subclass and (b) the Class A Subclass  Principal Balance of such Class A
Subclass as of the  Determination  Date preceding such  Distribution  Date minus
(ii) the Class A Subclass  Interest  Percentage  of such Class A Subclass of (x)
any Non-Supported  Interest Shortfall allocated to the Class A Certificates with
respect  to such  Distribution  Date,  (y) the  interest  portion  of any Excess
Special  Hazard  Losses,  Excess  Fraud  Losses  and  Excess  Bankruptcy  Losses
allocated to the Class A  Certificates  with respect to such  Distribution  Date
pursuant to Section 4.02(e) and (z) the interest  portion of any Realized Losses
(other  than  Excess  Special  Hazard  Losses,  Excess  Fraud  Losses and Excess
Bankruptcy  Losses)  allocated  to the  Class A  Certificates  on or  after  the
Cross-Over Date pursuant to Section 4.02(e). As to any Distribution Date and the
Class A-WIO  Certificates,  the Class A-WIO Interest  Accrual Amount.  The Class
A-PO Certificates have no Class A Subclass Interest Accrual Amount.

     Class A Subclass Interest  Percentage:  As to any Distribution Date and any
Class A Subclass,  the  percentage  calculated  by dividing the Class A Subclass
Interest Accrual Amount of such Class A Subclass  (determined  without regard to
clause (ii) of the  definition  thereof) by the Class A Interest  Accrual Amount
(determined  without  regard to clause  (ii) of the  definition  of each Class A
Subclass Interest Accrual Amount).

     Class A Subclass Interest Shortfall Amount: As to any Distribution Date and
any Subclass of Class A  Certificates,  any amount by which the Class A Subclass
Interest  Accrual  Amount  of  such  Class  A  Subclass  with  respect  to  such
Distribution  Date  exceeds  the amount  distributed  in respect of such Class A
Subclass  on such  Distribution  Date  pursuant  to  Paragraph  first of Section
4.01(a).

     Class A Subclass  Loss  Percentage:  As to any  Determination  Date and any
Subclass of Class A Certificates  (other than the Class A-PO  Certificates) then
outstanding,  the  percentage  calculated  by  dividing  the  Class  A  Subclass
Principal  Balance of such Subclass by the Class A Loss Denominator  (determined
without  regard to any such  Class A Subclass  Principal  Balance of any Class A
Subclass not then  outstanding),  in each case  determined  as of the  preceding
Determination Date.

     Class A Subclass Pass-Through Rate: As to each Class A Subclass, other than
the Class  A-PO and Class  A-WIO  Certificates,  the Class A Fixed  Pass-Through
Rate. The Class A-PO Certificates are not entitled to interest and have no Class
A Subclass  Pass-Through  Rate.  As to the Class A-WIO  Certificates,  the Class
A-WIO Pass-Through Rate.

     Class A Subclass Principal Balance:  As of the first Determination Date and
as to any Class A  Subclass  (other  than the  Class  A-WIO  Certificates),  the
Original Class A Subclass Principal Balance of such Class A Subclass.  As of any
subsequent Determination Date prior to the Cross-Over Date and as to any Class A
Subclass (other than the Class A-WIO and Class A-PO Certificates),  the Original
Class A Subclass  Principal Balance of such Class A Subclass less the sum of (i)
all amounts previously  distributed in respect of such Class A Subclass on prior
Distribution Dates (A) pursuant to Paragraph third clause (A) of Section 4.01(a)
and (B) as a result  of a  Principal  Adjustment  and (ii) the  Realized  Losses
allocated through such  Determination  Date to such Class A Subclass pursuant to
Section 4.02(b). After the Cross-Over Date, each such Class A Subclass Principal
Balance  will also be reduced on each  Determination  Date by an amount equal to
the product of the Class A Subclass Loss Percentage of such Class A Subclass and
the  excess,  if any,  of (i) the Class A Non-PO  Principal  Balance  as of such
Determination  Date without  regard to this  sentence  over (ii) the  difference
between (A) the Adjusted Pool Amount for the preceding Distribution Date and (B)
the Adjusted Pool Amount (PO Portion) for the preceding  Distribution  Date. The
Class A-WIO Certificates have no Class A Subclass Principal Balance.

     As of any subsequent Determination Date prior to the Cross-Over Date and as
to the Class A-PO Certificates,  the Original Class A Subclass Principal Balance
of such Class A Subclass less the sum of (a) all amounts previously  distributed
in respect of the Class A-PO Certificates on prior  Distribution  Dates pursuant
to  Paragraphs  third  clause  (B) and  fourth of  Section  4.01(a)  and (b) the
Realized  Losses  allocated  through such  Determination  Date to the Class A-PO
Certificates pursuant to Section 4.02(b).  After the Cross-Over Date, such Class
A Subclass  Principal Balance will also be reduced on each Determination Date by
an  amount  equal to the  difference,  if any,  between  such  Class A  Subclass
Principal Balance as of such  Determination Date without regard to this sentence
and the Adjusted Pool Amount (PO Portion) for the preceding Distribution Date.

     Class A Subclass Unpaid Interest Shortfall: As to any Distribution Date and
Class A Subclass,  the amount,  if any,  by which the  aggregate  of the Class A
Subclass  Interest  Shortfall  Amounts  for  such  Class A  Subclass  for  prior
Distribution  Dates is in excess of the amounts  distributed  in respect of such
Class A Subclass on prior  Distribution  Dates  pursuant to Paragraph  second of
Section 4.01(a).

     Class A Unpaid Interest  Shortfall:  As to any Distribution Date, an amount
equal to the sum of the Class A Subclass Unpaid Interest  Shortfalls for all the
Class A Subclasses.

     Class  A  Voting  Interest:  The  sum of (A) the  product  of (i) the  then
applicable  Class A Percentage  and (ii) the Non-PO Voting  Interest and (B) the
Pool Balance (PO Portion)  divided by the Pool Balance (Non-PO  Portion) and the
Pool Balance (PO Portion).

     Class A-1 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-1 and Exhibit D hereto.

     Class  A-1  Certificateholder:   The  registered  holder  of  a  Class  A-1
Certificate.

     Class A-2 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-2 and Exhibit D hereto.

     Class  A-2  Certificateholder:   The  registered  holder  of  a  Class  A-2
Certificate.

     Class A-3 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-3 and Exhibit D hereto.

     Class  A-3  Certificateholder:   The  registered  holder  of  a  Class  A-3
Certificate.

     Class A-4 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-4 and Exhibit D hereto.

     Class  A-4  Certificateholder:   The  registered  holder  of  a  Class  A-4
Certificate.

     Class A-5 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-5 and Exhibit D hereto.

     Class  A-5  Certificateholder:   The  registered  holder  of  a  Class  A-5
Certificate.

     Class A-6 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-6 and Exhibit D hereto.

     Class  A-6  Certificateholder:   The  registered  holder  of  a  Class  A-6
Certificate.

     Class A-7 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-7 and Exhibit D hereto.

     Class  A-7  Certificateholder:   The  registered  holder  of  a  Class  A-7
Certificate.

     Class A-8 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-8 and Exhibit D hereto.

     Class  A-8  Certificateholder:   The  registered  holder  of  a  Class  A-8
Certificate.

     Class A-PO Certificate:  Any one of the Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-PO and Exhibit D hereto.

     Class  A-PO  Certificateholder:  The  registered  holder  of a  Class  A-PO
Certificate.

     Class  A-PO  Deferred  Amount:  For  any  Distribution  Date  prior  to the
Cross-Over  Date, the difference  between (A) the sum of (x) the amount by which
the sum of the Class A-PO Optimal Principal  Amounts for all prior  Distribution
Dates exceeded the amounts  distributed on the Class A-PO  Certificates  on such
prior  Distribution  Dates  pursuant to  Paragraph  third  clause (B) of Section
4.01(a)  and (y) the sum of the product for each  Discount  Mortgage  Loan which
became  a  Liquidated  Loan  at any  time on or  prior  to the  last  day of the
applicable  Unscheduled  Principal  Receipt Period for the current  Distribution
Date of (a) the PO Fraction for such  Discount  Mortgage  Loan and (b) an amount
equal to the principal  portion of Realized Losses (other than Bankruptcy Losses
due to Debt Service  Reductions)  incurred  with respect to such  Mortgage  Loan
other  than  Excess  Special  Hazard  Losses,  Excess  Fraud  Losses  and Excess
Bankruptcy Losses and (B) amounts  distributed on the Class A-PO Certificates on
prior Distribution Dates pursuant to Paragraph fourth of Section 4.01(a). On and
after the  Cross-Over  Date,  the Class A-PO  Deferred  Amount will be zero.  No
interest will accrue on any Class A-PO Deferred Amount.

     Class A-PO Distribution  Amount As to any Distribution  Date, the aggregate
amount distributable to the Class A-PO Certificates pursuant to Paragraphs third
clause (B) and fourth of Section 4.01(a) on such Distribution Date.

     Class A-PO Optimal Principal Amount: As to any Distribution Date, an amount
equal to the sum as to each Outstanding Mortgage Loan, of the product of (x) the
PO Fraction with respect to such Mortgage Loan and (y) the sum of

               (i) (A) the principal  portion of the Monthly  Payment due on the
          Due Date  occurring  in the  month of such  Distribution  Date on such
          Mortgage Loan, less (B) if the Bankruptcy Loss Amount has been reduced
          to zero,  the  principal  portion of any Debt Service  Reduction  with
          respect to such Mortgage Loan;

               (ii) all Unscheduled  Principal  Receipts that were received by a
          Servicer  with  respect to such  Mortgage  Loan during the  Applicable
          Unscheduled  Principal  Receipt Period  relating to such  Distribution
          Date for each applicable type of Unscheduled Principal Receipt;

               (iii) the Scheduled  Principal Balance of each Mortgage Loan that
          was  repurchased by the Seller during such preceding month pursuant to
          Section 2.02 or 2.03;

               (iv) the excess of the unpaid principal  balance of such Mortgage
          Loan  substituted  for a  defective  Mortgage  Loan  during  the month
          preceding  the month in which such  Distribution  Date occurs over the
          unpaid  principal  balance of such defective  Mortgage Loan,  less the
          amount allocable to the principal portion of any unreimbursed Periodic
          Advances  previously  made by a Servicer,  the Master  Servicer or the
          Trust Administrator in respect of such defective Mortgage Loan.

     Class A-R Certificate:  The Certificate executed by the Trust Administrator
and  authenticated  by the Trust  Administrator or the  Authenticating  Agent in
substantially the form set forth in Exhibit A-R and Exhibit D hereto.

     Class  A-R  Certificateholder:  The  registered  holder  of the  Class  A-R
Certificate.

     Class A-WIO Certificate:  Any one of the Certificates executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-WIO and Exhibit D hereto.

     Class  A-WIO  Certificateholder:  The  registered  holder of a Class  A-WIO
Certificate.

     Class A-WIO Interest Accrual Amount:  As to any Distribution  Date, (i) the
product of (a)  1/12th of the Class  A-WIO  Pass-Through  Rate and (b) the Class
A-WIO Notional Amount as of the  Determination  Date preceding such Distribution
Date minus  (ii) the Class A Subclass  Interest  Percentage  of the Class  A-WIO
Certificates of (x) any Non-Supported  Interest Shortfall allocated to the Class
A Certificates with respect to such Distribution  Date, (y) the interest portion
of any Excess Special Hazard Losses,  Excess Fraud Losses and Excess  Bankruptcy
Losses allocated to the Class A Certificates  with respect to such  Distribution
Date  pursuant to Section  4.02(e) and (z) the interest  portion of any Realized
Losses (other than Excess Special Hazard Losses,  Excess Fraud Losses and Excess
Bankruptcy  Losses)  allocated  to the  Class A  Certificates  on or  after  the
Cross-Over Date pursuant to Section 4.02(e).

     Class A-WIO Notional  Amount:  As to any  Distribution  Date, the aggregate
Scheduled   Principal   Balance  of  the  Premium  Mortgage  Loans  as  of  such
Distribution Date.

     Class A-WIO  Pass-Through  Rate: As to any  Distribution  Date, a per annum
rate equal to the  Weighted  Average Net Mortgage  Interest  Rate of the Premium
Mortgage Loans minus 7.000%

     Class B  Certificate:  Any one of the  Class  B-1  Certificates,  Class B-2
Certificates,  Class  B-3  Certificates,  Class  B-4  Certificates  or Class B-5
Certificates.

     Class B Certificateholder: The registered holder of a Class B Certificate.

     Class B Interest Accrual Amount:  As to any  Distribution  Date, the sum of
the Class B Subclass  Interest Accrual Amounts with respect to such Distribution
Date.

     Class B Pass-Through Rate: As to any Distribution Date, 7.000% per annum.

     Class B Principal  Balance:  As of any date,  an amount equal to the sum of
the  Class  B-1  Principal  Balance,  Class  B-2  Principal  Balance,  Class B-3
Principal Balance, Class B-4 Principal Balance and Class B-5 Principal Balance.

     Class  B  Subclass:   Any  of  the  Class  B-1   Certificates,   Class  B-2
Certificates,  Class  B-3  Certificates,  Class  B-4  Certificates  or Class B-5
Certificates.

     Class B Subclass  Distribution  Amount:  Any of the Class  B-1,  Class B-2,
Class B-3, Class B-4 or Class B-5 Distribution Amounts.

     Class B Subclass  Interest Accrual Amount:  As to any Distribution Date and
any Class B Subclass,  an amount equal to (i) the product of 1/12th of the Class
B Pass-Through  Rate and the Class B Subclass  Principal Balance of such Class B
Subclass as of the  Determination  Date preceding such  Distribution  Date minus
(ii) the Class B Subclass  Interest  Percentage  of such Class B Subclass of (x)
any Non-Supported  Interest Shortfall allocated to the Class B Certificates with
respect to such  Distribution  Date and (y) the  interest  portion of any Excess
Special  Hazard  Losses,  Excess  Fraud  Losses  and  Excess  Bankruptcy  Losses
allocated to the Class B  Certificates  with respect to such  Distribution  Date
pursuant to Section 4.02(e).

     Class B Subclass Interest  Percentage:  As to any Distribution Date and any
Class B Subclass,  the  percentage  calculated  by dividing the Class B Subclass
Interest Accrual Amount of such Class B Subclass  (determined  without regard to
clause (ii) of the  definition  thereof) by the Class B Interest  Accrual Amount
(determined  without  regard to clause  (ii) of the  definition  of each Class B
Subclass Interest Accrual Amount).

     Class B Subclass Interest  Shortfall Amount:  Any of the Class B-1 Interest
Shortfall  Amount,  Class B-2  Interest  Shortfall  Amount,  Class B-3  Interest
Shortfall  Amount,  Class B-4  Interest  Shortfall  Amount or Class B-5 Interest
Shortfall Amount.

     Class B Subclass  Loss  Percentage:  As to any  Determination  Date and any
Class B Subclass then  outstanding,  the  percentage  calculated by dividing the
Class B Subclass  Principal  Balance  of such  Class B  Subclass  by the Class B
Principal Balance  (determined  without regard to any Class B Subclass Principal
Balance of any Class B Subclass not then  outstanding),  in each case determined
as of the preceding Determination Date.

     Class B Subclass Percentage: Any one of the Class B-1 Percentage, Class B-2
Percentage, Class B-3 Percentage, Class B-4 Percentage or Class B-5 Percentage.

     Class B Subclass  Prepayment  Percentage:  Any of the Class B-1  Prepayment
Percentage,  Class B-2 Prepayment  Percentage,  Class B-3 Prepayment Percentage,
Class B-4 Prepayment Percentage or Class B-5 Prepayment Percentage.

     Class B Subclass Principal Balance: Any of the Class B-1 Principal Balance,
Class B-2 Principal Balance,  Class B-3 Principal  Balance,  Class B-4 Principal
Balance or Class B-5 Principal Balance.

     Class B Subclass  Unpaid  Interest  Shortfall:  Any of the Class B-1 Unpaid
Interest  Shortfall,  Class B-2  Unpaid  Interest  Shortfall,  Class B-3  Unpaid
Interest  Shortfall,  Class B-4 Unpaid  Interest  Shortfall  or Class B-5 Unpaid
Interest Shortfall.

     Class B-1 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-1 and Exhibit D hereto.

     Class  B-1  Certificateholder:   The  registered  holder  of  a  Class  B-1
Certificate.

     Class B-1  Distribution  Amount:  As to any  Distribution  Date, any amount
distributable  to  the  Holders  of  the  Class  B-1  Certificates  pursuant  to
Paragraphs eighth, ninth and tenth of Section 4.01(a).

     Class B-1 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  Interest  Accrual  Amount of the Class B-1
Certificates   with  respect  to  such  Distribution  Date  exceeds  the  amount
distributed in respect of the Class B-1 Certificates on such  Distribution  Date
pursuant to Paragraph eighth of Section 4.01(a).

     Class B-1 Optimal Principal Amount: As to any Distribution  Date, an amount
equal to the sum, as to each  Outstanding  Mortgage  Loan, of the product of (x)
the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

               (i) the Class B-1 Percentage of (A) the principal  portion of the
          Monthly  Payment  due on the Due Date  occurring  in the month of such
          Distribution  Date on such Mortgage  Loan,  less (B) if the Bankruptcy
          Loss Amount has been  reduced to zero,  the  principal  portion of any
          Debt Service Reduction with respect to such Mortgage Loan;

               (ii) the  Class  B-1  Prepayment  Percentage  of all  Unscheduled
          Principal  Receipts  that were  received by a Servicer with respect to
          such Mortgage Loan during the Applicable Unscheduled Principal Receipt
          Period relating to such  Distribution Date for each applicable type of
          Unscheduled Principal Receipt;

               (iii)  the  Class  B-1  Prepayment  Percentage  of the  Scheduled
          Principal  Balance  of such  Mortgage  Loan  which,  during  the month
          preceding the month of such Distribution  Date, was repurchased by the
          Seller pursuant to Section 2.02 or 2.03; and

               (iv)  the  Class  B-1  Percentage  of the  excess  of the  unpaid
          principal  balance of such Mortgage Loan  substituted  for a defective
          Mortgage  Loan  during  the month  preceding  the month in which  such
          Distribution  Date  occurs over the unpaid  principal  balance of such
          defective  Mortgage Loan,  less the amount  allocable to the principal
          portion of any  unreimbursed  Periodic  Advances  previously made by a
          Servicer, the Master Servicer or the Trust Administrator in respect of
          such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass and such Distribution Date, the Class B-1 Optimal Principal Amount
will equal the lesser of (A) the Class B-1 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-1 Certificates.

     Class B-1 Percentage:  As to any Distribution  Date, except as set forth in
the next sentence, the percentage calculated by multiplying (i) the Subordinated
Percentage by (ii) a fraction, the numerator of which is the Class B-1 Principal
Balance  (determined as of the  Determination  Date preceding such  Distribution
Date) and the  denominator of which is the sum of the Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  eligible
to receive principal distributions for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-1  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-1
Percentage for such Distribution Date will be zero.

     Class B-1 Prepayment Percentage: As to any Distribution Date, except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated Prepayment Percentage by (ii) a fraction, the numerator of which is
the  Class  B-1  Principal  Balance  (determined  as of the  Determination  Date
preceding such Distribution Date) and the denominator of which is the sum of the
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  eligible  to  receive  principal  distributions  for  such
Distribution  Date in accordance with the provisions of Section 4.01(d).  Except
as  set  forth  in  Section  4.01(d)(ii),  in  the  event  that  the  Class  B-1
Certificates  are  not  eligible  to  receive   distributions  of  principal  in
accordance with Section 4.01(d)(i), the Class B-1 Prepayment Percentage for such
Distribution Date will be zero.

     Class B-1  Principal  Balance:  As to the  first  Determination  Date,  the
Original Class B-1 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-1 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-1 Certificates on
prior  Distribution Dates (A) pursuant to Paragraph tenth of Section 4.01(a) and
(B) as a result of a Principal  Adjustment and (b) the Realized Losses allocated
through  such  Determination  Date to the Class  B-1  Certificates  pursuant  to
Section  4.02(b)  and  (ii)  the  Adjusted  Pool  Amount  as  of  the  preceding
Distribution  Date less the sum of the Class A Principal Balance and the Class M
Principal Balance as of such Determination Date.

     Class B-1 Unpaid  Interest  Shortfall:  As to any  Distribution  Date,  the
amount,  if any,  by which the  aggregate  of the Class B-1  Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-1  Certificates on prior  Distribution  Dates pursuant to
Paragraph ninth of Section 4.01(a).

     Class B-2 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-2 and Exhibit D hereto.

     Class  B-2  Certificateholder:   The  registered  holder  of  a  Class  B-2
Certificate.

     Class B-2  Distribution  Amount:  As to any  Distribution  Date, any amount
distributable  to  the  Holders  of  the  Class  B-2  Certificates  pursuant  to
Paragraphs eleventh, twelfth and thirteenth of Section 4.01(a).

     Class B-2 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  Interest  Accrual  Amount of the Class B-2
Certificates   with  respect  to  such  Distribution  Date  exceeds  the  amount
distributed in respect of the Class B-2 Certificates on such  Distribution  Date
pursuant to Paragraph eleventh of Section 4.01(a).

     Class B-2 Optimal Principal Amount: As to any Distribution  Date, an amount
equal to the sum, as to each  Outstanding  Mortgage  Loan, of the product of (x)
the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

               (i) the Class B-2 Percentage of (A) the principal  portion of the
          Monthly  Payment  due on the Due Date  occurring  in the month of such
          Distribution  Date on such Mortgage  Loan,  less (B) if the Bankruptcy
          Loss Amount has been  reduced to zero,  the  principal  portion of any
          Debt Service Reduction with respect to such Mortgage Loan;

               (ii) the  Class  B-2  Prepayment  Percentage  of all  Unscheduled
          Principal  Receipts  that were  received by a Servicer with respect to
          such Mortgage Loan during the Applicable Unscheduled Principal Receipt
          Period relating to such  Distribution Date for each applicable type of
          Unscheduled Principal Receipt;

               (iii)  the  Class  B-2  Prepayment  Percentage  of the  Scheduled
          Principal  Balance  of such  Mortgage  Loan  which,  during  the month
          preceding the month of such Distribution  Date, was repurchased by the
          Seller pursuant to Section 2.02 or 2.03; and

               (iv)  the  Class  B-2  Percentage  of the  excess  of the  unpaid
          principal  balance of such Mortgage Loan  substituted  for a defective
          Mortgage  Loan  during  the month  preceding  the month in which  such
          Distribution  Date  occurs over the unpaid  principal  balance of such
          defective  Mortgage Loan,  less the amount  allocable to the principal
          portion of any  unreimbursed  Periodic  Advances  previously made by a
          Servicer, the Master Servicer or the Trust Administrator in respect of
          such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass and such Distribution Date, the Class B-2 Optimal Principal Amount
will equal the lesser of (A) the Class B-2 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-2 Certificates.

     Class B-2 Percentage:  As to any Distribution  Date, except as set forth in
the next sentence, the percentage calculated by multiplying (i) the Subordinated
Percentage by (ii) a fraction, the numerator of which is the Class B-2 Principal
Balance  (determined as of the  Determination  Date preceding such  Distribution
Date) and the  denominator of which is the sum of the Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  eligible
to receive principal distributions for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-2  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-2
Percentage for such Distribution Date will be zero.

     Class B-2 Prepayment Percentage: As to any Distribution Date, except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated Prepayment Percentage by (ii) a fraction, the numerator of which is
the  Class  B-2  Principal  Balance  (determined  as of the  Determination  Date
preceding such Distribution Date) and the denominator of which is the sum of the
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  eligible  to  receive  principal  distributions  for  such
Distribution  Date in accordance with the provisions of Section 4.01(d).  Except
as  set  forth  in  Section  4.01(d)(ii),  in  the  event  that  the  Class  B-2
Certificates  are  not  eligible  to  receive   distributions  of  principal  in
accordance with Section 4.01(d)(i), the Class B-2 Prepayment Percentage for such
Distribution Date will be zero.

     Class B-2  Principal  Balance:  As to the  first  Determination  Date,  the
Original Class B-2 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-2 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-2 Certificates on
prior Distribution Dates (A) pursuant to Paragraph thirteenth of Section 4.01(a)
and (B) as a  result  of a  Principal  Adjustment  and (b) the  Realized  Losses
allocated through such Determination Date to the Class B-2 Certificates pursuant
to  Section  4.02(b)  and (ii) the  Adjusted  Pool  Amount  as of the  preceding
Distribution  Date less the sum of the  Class A  Principal  Balance  the Class M
Principal Balance and the Class B-1 Principal  Balance as of such  Determination
Date.

     Class B-2 Unpaid  Interest  Shortfall:  As to any  Distribution  Date,  the
amount,  if any,  by which the  aggregate  of the Class B-2  Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-2  Certificates on prior  Distribution  Dates pursuant to
Paragraph twelfth of Section 4.01(a).

     Class B-3 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-3 and Exhibit D hereto.

     Class  B-3  Certificateholder:   The  registered  holder  of  a  Class  B-3
Certificate.

     Class B-3  Distribution  Amount:  As to any  Distribution  Date, any amount
distributable  to  the  Holders  of  the  Class  B-3  Certificates  pursuant  to
Paragraphs fourteenth, fifteenth and sixteenth of Section 4.01(a).

     Class B-3 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  Interest  Accrual  Amount of the Class B-3
Certificates   with  respect  to  such  Distribution  Date  exceeds  the  amount
distributed in respect of the Class B-3 Certificates on such  Distribution  Date
pursuant to Paragraph fourteenth of Section 4.01(a).

     Class B-3 Optimal Principal Amount: As to any Distribution  Date, an amount
equal to the sum, as to each  Outstanding  Mortgage  Loan, of the product of (x)
the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

               (i) the Class B-3 Percentage of (A) the principal  portion of the
          Monthly  Payment  due on the Due Date  occurring  in the month of such
          Distribution  Date on such Mortgage  Loan,  less (B) if the Bankruptcy
          Loss Amount has been  reduced to zero,  the  principal  portion of any
          Debt Service Reduction with respect to such Mortgage Loan;

               (ii) the  Class  B-3  Prepayment  Percentage  of all  Unscheduled
          Principal  Receipts  that were  received by a Servicer with respect to
          such Mortgage Loan during the Applicable Unscheduled Principal Receipt
          Period relating to such  Distribution Date for each applicable type of
          Unscheduled Principal Receipt;

               (iii)  the  Class  B-3  Prepayment  Percentage  of the  Scheduled
          Principal  Balance  of such  Mortgage  Loan  which,  during  the month
          preceding the month of such Distribution  Date, was repurchased by the
          Seller pursuant to Section 2.02 or 2.03; and

               (iv)  the  Class  B-3  Percentage  of the  excess  of the  unpaid
          principal  balance of such Mortgage Loan  substituted  for a defective
          Mortgage  Loan  during  the month  preceding  the month in which  such
          Distribution  Date  occurs over the unpaid  principal  balance of such
          defective  Mortgage Loan,  less the amount  allocable to the principal
          portion of any  unreimbursed  Periodic  Advances  previously made by a
          Servicer, the Master Servicer or the Trust Administrator in respect of
          such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass and such Distribution Date, the Class B-3 Optimal Principal Amount
will equal the lesser of (A) the Class B-3 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-3 Certificates.

     Class B-3 Percentage:  As to any Distribution  Date, except as set forth in
the next sentence, the percentage calculated by multiplying (i) the Subordinated
Percentage by (ii) a fraction, the numerator of which is the Class B-3 Principal
Balance  (determined as of the  Determination  Date preceding such  Distribution
Date) and the  denominator of which is the sum of the Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  eligible
to receive principal distributions for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-3  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-3
Percentage for such Distribution Date will be zero.

     Class B-3 Prepayment Percentage: As to any Distribution Date, except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated Prepayment Percentage by (ii) a fraction, the numerator of which is
the  Class  B-3  Principal  Balance  (determined  as of the  Determination  Date
preceding such Distribution Date) and the denominator of which is the sum of the
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  eligible  to  receive  principal  distributions  for  such
Distribution  Date in accordance with the provisions of Section 4.01(d).  Except
as  set  forth  in  Section  4.01(d)(ii),  in  the  event  that  the  Class  B-3
Certificates  are  not  eligible  to  receive   distributions  of  principal  in
accordance with Section 4.01(d)(i), the Class B-3 Prepayment Percentage for such
Distribution Date will be zero.

     Class B-3  Principal  Balance:  As to the  first  Determination  Date,  the
Original Class B-3 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-3 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-3 Certificates on
prior Distribution Dates (A) pursuant to Paragraph  sixteenth of Section 4.01(a)
and (B) as a  result  of a  Principal  Adjustment  and (b) the  Realized  Losses
through such Determination Date allocated to the Class B-3 Certificates pursuant
to  Section  4.02(b)  and (ii) the  Adjusted  Pool  Amount  as of the  preceding
Distribution  Date less the sum of the Class A  Principal  Balance,  the Class M
Principal  Balance,  the Class B-1 Principal Balance and the Class B-2 Principal
Balance as of such Determination Date.

     Class B-3 Unpaid  Interest  Shortfall:  As to any  Distribution  Date,  the
amount,  if any,  by which the  aggregate  of the Class B-3  Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-3  Certificates on prior  Distribution  Dates pursuant to
Paragraph fifteenth of Section 4.01(a).

     Class B-4 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-4 and Exhibit D hereto.

     Class  B-4  Certificateholder:   The  registered  holder  of  a  Class  B-4
Certificate.

     Class B-4  Distribution  Amount:  As to any  Distribution  Date, any amount
distributable  to  the  Holders  of  the  Class  B-4  Certificates  pursuant  to
Paragraphs seventeenth, eighteenth, and nineteenth of Section 4.01(a).

     Class B-4 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  Interest  Accrual  Amount of the Class B-4
Certificates   with  respect  to  such  Distribution  Date  exceeds  the  amount
distributed in respect of the Class B-4 Certificates on such  Distribution  Date
pursuant to Paragraph seventeenth of Section 4.01(a).

     Class B-4 Optimal Principal Amount: As to any Distribution  Date, an amount
equal to the sum, as to each  Outstanding  Mortgage  Loan, of the product of (x)
the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

               (i) the Class B-4 Percentage of (A) the principal  portion of the
          Monthly  Payment  due on the Due Date  occurring  in the month of such
          Distribution  Date on such Mortgage  Loan,  less (B) if the Bankruptcy
          Loss Amount has been  reduced to zero,  the  principal  portion of any
          Debt Service Reduction with respect to such Mortgage Loan;

               (ii) the  Class  B-4  Prepayment  Percentage  of all  Unscheduled
          Principal  Receipts  that were  received by a Servicer with respect to
          such Mortgage Loan during the Applicable Unscheduled Principal Receipt
          Period relating to such  Distribution Date for each applicable type of
          Unscheduled Principal Receipt;

               (iii)  the  Class  B-4  Prepayment  Percentage  of the  Scheduled
          Principal  Balance  of such  Mortgage  Loan  which,  during  the month
          preceding the month of such Distribution  Date, was repurchased by the
          Seller pursuant to Section 2.02 or 2.03; and

               (iv)  the  Class  B-4  Percentage  of the  excess  of the  unpaid
          principal  balance of such Mortgage Loan  substituted  for a defective
          Mortgage  Loan  during  the month  preceding  the month in which  such
          Distribution  Date  occurs over the unpaid  principal  balance of such
          defective  Mortgage Loan,  less the amount  allocable to the principal
          portion of any  unreimbursed  Periodic  Advances  previously made by a
          Servicer, the Master Servicer or the Trust Administrator in respect of
          such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass and such Distribution Date, the Class B-4 Optimal Principal Amount
will equal the lesser of (A) the Class B-4 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-4 Certificates.

     Class B-4 Percentage:  As to any Distribution  Date, except as set forth in
the next sentence, the percentage calculated by multiplying (i) the Subordinated
Percentage by (ii) a fraction, the numerator of which is the Class B-4 Principal
Balance  (determined as of the  Determination  Date preceding such  Distribution
Date) and the  denominator of which is the sum of the Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  eligible
to receive principal distributions for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-4  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-4
Percentage for such Distribution Date will be zero.

     Class B-4 Prepayment Percentage: As to any Distribution Date, except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated Prepayment Percentage by (ii) a fraction, the numerator of which is
the  Class  B-4  Principal  Balance  (determined  as of the  Determination  Date
preceding such Distribution Date) and the denominator of which is the sum of the
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  eligible  to  receive  principal  distributions  for  such
Distribution  Date in accordance with the provisions of Section 4.01(d).  Except
as  set  forth  in  Section  4.01(d)(ii),  in  the  event  that  the  Class  B-4
Certificates  are  not  eligible  to  receive   distributions  of  principal  in
accordance with Section 4.01(d)(i), the Class B-4 Prepayment Percentage for such
Distribution Date will be zero.

     Class B-4  Principal  Balance:  As to the  first  Determination  Date,  the
Original Class B-4 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-4 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-4 Certificates on
prior Distribution Dates (A) pursuant to Paragraph nineteenth of Section 4.01(a)
and (B) as a  result  of a  Principal  Adjustment  and (b) the  Realized  Losses
allocated through such Determination Date to the Class B-4 Certificates pursuant
to  Section  4.02(b)  and (ii) the  Adjusted  Pool  Amount  as of the  preceding
Distribution  Date less the sum of the Class A  Principal  Balance,  the Class M
Principal  Balance,  the Class B-1  Principal  Balance,  the Class B-2 Principal
Balance and the Class B-3 Principal Balance as of such Determination Date.

     Class B-4 Unpaid  Interest  Shortfall:  As to any  Distribution  Date,  the
amount,  if any,  by which the  aggregate  of the Class B-4  Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-4  Certificates on prior  Distribution  Dates pursuant to
Paragraph eighteenth of Section 4.01(a).

     Class B-5 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-5 and Exhibit D hereto.

     Class  B-5  Certificateholder:   The  registered  holder  of  a  Class  B-5
Certificate.

     Class B-5  Distribution  Amount:  As to any  Distribution  Date, any amount
distributable  to  the  Holders  of  the  Class  B-5  Certificates  pursuant  to
Paragraphs twentieth, twenty-first, and twenty-second of Section 4.01(a).

     Class B-5 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  Interest  Accrual  Amount of the Class B-5
Certificates   with  respect  to  such  Distribution  Date  exceeds  the  amount
distributed in respect of the Class B-5 Certificates on such  Distribution  Date
pursuant to Paragraph twentieth of Section 4.01(a).

     Class B-5 Optimal Principal Amount: As to any Distribution  Date, an amount
equal to the sum, as to each  Outstanding  Mortgage  Loan, of the product of (x)
the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

               (i) the Class B-5 Percentage of (A) the principal  portion of the
          Monthly  Payment  due on the Due Date  occurring  in the month of such
          Distribution  Date on such Mortgage  Loan,  less (B) if the Bankruptcy
          Loss Amount has been  reduced to zero,  the  principal  portion of any
          Debt Service Reduction with respect to such Mortgage Loan;

               (ii) the  Class  B-5  Prepayment  Percentage  of all  Unscheduled
          Principal  Receipts  that were  received by a Servicer with respect to
          such Mortgage Loan during the Applicable Unscheduled Principal Receipt
          Period relating to such  Distribution Date for each applicable type of
          Unscheduled Principal Receipt;

               (iii)  the  Class  B-5  Prepayment  Percentage  of the  Scheduled
          Principal  Balance  of such  Mortgage  Loan  which,  during  the month
          preceding the month of such Distribution  Date, was repurchased by the
          Seller pursuant to Section 2.02 or 2.03; and

               (iv)  the  Class  B-5  Percentage  of the  excess  of the  unpaid
          principal  balance of such Mortgage Loan  substituted  for a defective
          Mortgage  Loan  during  the month  preceding  the month in which  such
          Distribution  Date  occurs over the unpaid  principal  balance of such
          defective  Mortgage Loan,  less the amount  allocable to the principal
          portion of any  unreimbursed  Periodic  Advances  previously made by a
          Servicer, the Master Servicer or the Trust Administrator in respect of
          such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass and such Distribution Date, the Class B-5 Optimal Principal Amount
will equal the lesser of (A) the Class B-5 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-5 Certificates.

     Class B-5 Percentage:  As to any Distribution  Date, except as set forth in
the next sentence, the percentage calculated by multiplying (i) the Subordinated
Percentage by (ii) a fraction, the numerator of which is the Class B-5 Principal
Balance  (determined as of the  Determination  Date preceding such  Distribution
Date) and the  denominator of which is the sum of the Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  eligible
to receive principal distributions for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-5  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-5
Percentage for such Distribution Date will be zero.

     Class B-5 Prepayment Percentage: As to any Distribution Date, except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated Prepayment Percentage by (ii) a fraction, the numerator of which is
the  Class  B-5  Principal  Balance  (determined  as of the  Determination  Date
preceding such Distribution Date) and the denominator of which is the sum of the
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  eligible  to  receive  principal  distributions  for  such
Distribution  Date in accordance with the provisions of Section 4.01(d).  Except
as  set  forth  in  Section  4.01(d)(ii),  in  the  event  that  the  Class  B-5
Certificates  are  not  eligible  to  receive   distributions  of  principal  in
accordance with Section 4.01(d)(i), the Class B-5 Prepayment Percentage for such
Distribution Date will be zero.

     Class B-5  Principal  Balance:  As to the  first  Determination  Date,  the
Original Class B-5 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-5 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-5 Certificates on
prior Distribution Dates pursuant to Paragraph  twenty-second of Section 4.01(a)
and (b) the Realized Losses  allocated  through such  Determination  Date to the
Class B-5  Certificates  pursuant to Section  4.02(b) and (ii) the Adjusted Pool
Amount  as of the  preceding  Distribution  Date  less  the  sum of the  Class A
Principal  Balance,  the Class M  Principal  Balance,  the  Class B-1  Principal
Balance,  the Class B-2 Principal  Balance,  the Class B-3 Principal Balance and
the Class B-4 Principal Balance as of such Determination Date.

     Class B-5 Unpaid  Interest  Shortfall:  As to any  Distribution  Date,  the
amount,  if any,  by which the  aggregate  of the Class B-5  Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-5  Certificates on prior  Distribution  Dates pursuant to
Paragraph twenty-first of Section 4.01(a).

     Class M  Certificate:  Any one of the  Certificates  executed  by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit C and Exhibit D hereto.

     Class M Certificateholder: The registered holder of a Class M Certificate.

     Class M  Distribution  Amount:  As to any  Distribution  Date,  any  amount
distributable to the Holders of the Class M Certificates  pursuant to Paragraphs
fifth, sixth and seventh of Section 4.01(a).

     Class M Interest  Accrual Amount:  As to any  Distribution  Date, an amount
equal to (i) the  product  of 1/12th of the  Class M  Pass-Through  Rate and the
Class  M  Principal  Balance  as  of  the  Determination   Date  preceding  such
Distribution Date minus (ii) (x) any Non-Supported  Interest Shortfall allocated
to the Class M Certificates  with respect to such  Distribution Date and (y) the
interest  portion of any Excess Special  Hazard Losses,  Excess Fraud Losses and
Excess  Bankruptcy  Losses allocated to the Class M Certificates with respect to
such Distribution Date pursuant to Section 4.02(e).

     Class M Interest  Shortfall Amount: As to any Distribution Date, any amount
by which the Class M Interest  Accrual Amount with respect to such  Distribution
Date exceeds the amount  distributed in respect of the Class M  Certificates  on
such Distribution Date pursuant to Paragraph fifth of Section 4.01(a).

     Class M Optimal Principal  Amount:  As to any Distribution  Date, an amount
equal to the sum, as to each  Outstanding  Mortgage  Loan, of the product of (x)
the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

               (i) the Class M Percentage  of (A) the  principal  portion of the
          Monthly  Payment  due on the Due Date  occurring  in the month of such
          Distribution  Date on such Mortgage  Loan,  less (B) if the Bankruptcy
          Loss Amount has been  reduced to zero,  the  principal  portion of any
          Debt Service Reduction with respect to such Mortgage Loan;

               (ii)  the  Class  M  Prepayment  Percentage  of  all  Unscheduled
          Principal  Receipts  that were  received by a Servicer with respect to
          such Mortgage Loan during the Applicable Unscheduled Principal Receipt
          Period relating to such  Distribution Date for each applicable type of
          Unscheduled Principal Receipt;

               (iii)  the  Class  M  Prepayment   Percentage  of  the  Scheduled
          Principal  Balance  of such  Mortgage  Loan  which,  during  the month
          preceding the month of such Distribution  Date, was repurchased by the
          Seller pursuant to Section 2.02 or 2.03; and

               (iv) the Class M Percentage of the excess of the unpaid principal
          balance of such Mortgage  Loan  substituted  for a defective  Mortgage
          Loan during the month  preceding the month in which such  Distribution
          Date  occurs  over the  unpaid  principal  balance  of such  defective
          Mortgage Loan, less the amount  allocable to the principal  portion of
          any unreimbursed Periodic Advances previously made by a Servicer,  the
          Master  Servicer  or  the  Trust  Administrator  in  respect  of  such
          defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class M Optimal Principal Amount will
equal  the  lesser of (A) the Class M Optimal  Principal  Amount  calculated  as
described in the preceding provisions and (B) the Adjusted Principal Balance for
the Class M Certificates.

     Class M Pass-Through Rate:  As to any Distribution Date, 7.000% per annum.

     Class M Percentage:  As to any Distribution Date, the percentage calculated
by  multiplying  the  Subordinated  Percentage  by  either  (a) if any  Class  B
Certificates  are  eligible  to  receive   principal   distributions   for  such
Distribution  Date in  accordance  with the  provisions  of Section  4.01(d),  a
fraction, the numerator of which is the Class M Principal Balance (determined as
of the Determination  Date preceding such Distribution Date) and the denominator
of which is the sum of the Class M  Principal  Balance  and the Class B Subclass
Principal  Balances  of the Class B  Subclasses  eligible  to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d) or (b) except as set forth in Section 4.01(d)(ii),  if the Class
B  Certificates  are not eligible to receive  principal  distributions  for such
Distribution Date in accordance with the provisions of Section 4.01(d)(i), one.

     Class M Prepayment Percentage:  As to any Distribution Date, the percentage
calculated by multiplying the Subordinated  Prepayment  Percentage by either (a)
if any Class B Certificates are eligible to receive principal  distributions for
such Distribution  Date in accordance with the provisions of Section 4.01(d),  a
fraction, the numerator of which is the Class M Principal Balance (determined as
of the Determination  Date preceding such Distribution Date) and the denominator
of which is the sum of the Class M  Principal  Balance  and the Class B Subclass
Principal  Balances  of the Class B  Subclasses  eligible  to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d) or (b) except as set forth in Section 4.01(d)(ii),  if the Class
B  Certificates  are not eligible to receive  principal  distributions  for such
Distribution Date in accordance with the provisions of Section 4.01(d)(i), one.

     Class M Principal Balance: As to the first Determination Date, the Original
Class M Principal Balance.  As of any subsequent  Determination Date, the lesser
of (i) the  Original  Class M Principal  Balance less the sum of (a) all amounts
previously  distributed  in  respect  of  the  Class  M  Certificates  on  prior
Distribution  Dates (A) pursuant to Paragraph seventh of Section 4.01(a) and (B)
as a result of a Principal  Adjustment  and (b) the  Realized  Losses  allocated
through such Determination Date to the Class M Certificates  pursuant to Section
4.02(b) and (ii) the Adjusted Pool Amount as of the preceding  Distribution Date
less the Class A Principal Balance as of such Determination Date.

     Class M Unpaid Interest Shortfall: As to any Distribution Date, the amount,
if any, by which the  aggregate  of the Class M Interest  Shortfall  Amounts for
prior Distribution  Dates is in excess of the amounts  distributed in respect of
the Class M Certificates on prior Distribution Dates pursuant to Paragraph sixth
of Section 4.01(a).

     Clearing Agency: An organization registered as a "clearing agency" pursuant
to Section 17A of the Securities  Exchange Act of 1934, as amended.  The initial
Clearing Agency shall be The Depository Trust Company.

     Clearing Agency Participant:  A broker, dealer, bank, financial institution
or other  Person for whom a Clearing  Agency  effects  book-entry  transfers  of
securities deposited with the Clearing Agency.

     Closing  Date:  The date of initial  issuance of the  Certificates,  as set
forth in Section 11.22.

     Code: The Internal  Revenue Code of 1986, as it may be amended from time to
time, any successor  statutes  thereto,  and applicable  U.S.  Department of the
Treasury temporary or final regulations promulgated thereunder.

     Compensating  Interest:  As to any Distribution Date, the lesser of (a) the
product of (i) 1/12th of 0.20% and (ii) the Pool Scheduled Principal Balance for
such Distribution  Date and (b) the Available Master Servicing  Compensation for
such Distribution Date.

     Co-op Shares:  Shares issued by private non-profit housing corporations.

     Corporate Trust Office: The principal office of the Trust  Administrator or
the Trustee,  as the case may be, at which at any particular  time its corporate
trust business shall be  administered,  which office,  with respect to the Trust
Administrator, at the date of the execution of this instrument is located at 230
South Tryon Street,  Charlotte,  North  Carolina  28288 and, with respect to the
Trustee,  at the date of the execution of this instrument is located at 114 West
47th Street, New York, New York 10036.

     Cross-Over  Date: The  Distribution  Date preceding the first  Distribution
Date on which the Class A Percentage  (determined pursuant to clause (ii) of the
definition thereof) equals or exceeds 100%.

     Cross-Over Date Interest  Shortfall:  With respect to any Distribution Date
that  occurs on or after the  Cross-Over  Date with  respect to any  Unscheduled
Principal Receipt (other than a Prepayment in Full):

          (A)  in the case where the Applicable  Unscheduled  Principal  Receipt
               Period  is the  Mid-Month  Receipt  Period  and such  Unscheduled
               Principal  Receipt is  received  by the  Servicer on or after the
               Determination  Date in the  month  preceding  the  month  of such
               Distribution Date but prior to the first day of the month of such
               Distribution Date, the amount of interest that would have accrued
               at  the  Net  Mortgage  Interest  Rate  on  the  amount  of  such
               Unscheduled  Principal Receipt from the day of its receipt or, if
               earlier,  its application by the Servicer through the last day of
               the month preceding the month of such Distribution Date; and

          (B)  in the case where the Applicable  Unscheduled  Principal  Receipt
               Period is the Prior  Month  Receipt  Period and such  Unscheduled
               Principal  Receipt is received by the  Servicer  during the month
               preceding  the month of such  Distribution  Date,  the  amount of
               interest  that would have  accrued at the Net  Mortgage  Interest
               Rate on the amount of such Unscheduled Principal Receipt from the
               day of  its  receipt  or,  if  earlier,  its  application  by the
               Servicer  through  the  last  day  of the  month  in  which  such
               Unscheduled Principal Receipt is received.

     Current Class A Interest  Distribution Amount: As to any Distribution Date,
the  amount  distributed  in  respect  of the  Class A  Subclasses  pursuant  to
Paragraph first of Section 4.01(a) on such Distribution Date.

     Current Class B Interest  Distribution Amount: As to any Distribution Date,
the  amount  distributed  in  respect of the Class B  Certificates  pursuant  to
Paragraphs eighth,  eleventh,  fourteenth,  seventeenth and twentieth of Section
4.01(a) on such Distribution Date.

     Current  Class  B-1  Fractional  Interest:  As  to  any  Distribution  Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the sum of the Class B Subclass  Principal Balances of the Class B-2, Class B-3,
Class B-4 and Class B-5  Certificates by the sum of the Class A Non-PO Principal
Balance,  the Class M Principal Balance and the Class B Principal Balance. As to
the first Distribution Date, the Original Class B-1 Fractional Interest.

     Current  Class  B-2  Fractional  Interest:  As  to  any  Distribution  Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the sum of the Class B Subclass  Principal  Balances of the Class B-3, Class B-4
and Class B-5 Certificates by the sum of the Class A Non-PO  Principal  Balance,
the Class M Principal Balance and the Class B Principal Balance. As to the first
Distribution Date, the Original Class B-2 Fractional Interest.

     Current  Class  B-3  Fractional  Interest:  As  to  any  Distribution  Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the sum of the Class B Subclass  Principal  Balances  of the Class B-4 and Class
B-5 Certificates by the sum of the Class A Non-PO Principal Balance, the Class M
Principal  Balance  and  the  Class  B  Principal  Balance.   As  to  the  first
Distribution Date, the Original Class B-3 Fractional Interest.

     Current  Class  B-4  Fractional  Interest:  As  to  any  Distribution  Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the Class B Subclass  Principal Balance of the Class B-5 Certificates by the sum
of the Class A Non-PO Principal  Balance,  the Class M Principal Balance and the
Class B Principal Balance. As to the first Distribution Date, the Original Class
B-4 Fractional Interest.

     Current Class M Fractional Interest: As to any Distribution Date subsequent
to the first Distribution Date, the percentage  obtained by dividing the Class B
Principal Balance by the sum of the Class A Non-PO Principal Balance,  the Class
M  Principal  Balance  and  the  Class  B  Principal  Balance.  As to the  first
Distribution Date, the Original Class M Fractional Interest.

     Current Class M Interest  Distribution Amount: As to any Distribution Date,
the  amount  distributed  in  respect of the Class M  Certificates  pursuant  to
Paragraph fifth of Section 4.01(a) on such Distribution Date.

     Curtailment:  Any Principal  Prepayment  made by a Mortgagor which is not a
Prepayment in Full.

     Custodial Agreement:  The Custodial Agreement, if any, from time to time in
effect between the Custodian named therein,  the Seller, the Master Servicer and
the Trust  Administrator,  substantially in the form of Exhibit E hereto, as the
same may be amended or modified from time to time in  accordance  with the terms
thereof.

     Custodial P&I Account: The Custodial P&I Account, as defined in each of the
Servicing Agreements, with respect to the Mortgage Loans. In determining whether
the Custodial P&I Account under any Servicing  Agreement is  "acceptable" to the
Master  Servicer (as may be required by the  definition  of  "Eligible  Account"
contained in the Servicing  Agreements),  the Master Servicer shall require that
any such account shall be acceptable to each of the Rating Agencies.

     Custodian:   Initially,   the  Trust  Administrator,   and  thereafter  the
Custodian,  if any, hereafter appointed by the Trust  Administrator  pursuant to
Section 8.13, or its successor in interest  under the Custodial  Agreement.  The
Custodian  may (but need not) be the  Trustee,  the Trust  Administrator  or any
Person  directly or  indirectly  controlling  or  controlled  by or under common
control  of either of them.  Neither a  Servicer,  nor the Seller nor the Master
Servicer nor any Person  directly or indirectly  controlling or controlled by or
under common control with any such Person may be appointed Custodian.

     Cut-Off  Date:  The  first  day of the  month of  initial  issuance  of the
Certificates as set forth in Section 11.02.

     Cut-Off Date Aggregate Principal Balance: The aggregate of the Cut-Off Date
Principal Balances of the Mortgage Loans is as set forth in Section 11.03.

     Cut-Off  Date  Principal  Balance:  As to each  Mortgage  Loan,  its unpaid
principal  balance as of the close of business on the Cut-Off  Date (but without
giving effect to any Unscheduled  Principal  Receipts received or applied on the
Cut-Off Date), reduced by all payments of principal due on or before the Cut-Off
Date and not paid, and increased by scheduled  monthly payments of principal due
after the Cut-Off  Date but  received  by the related  Servicer on or before the
Cut-Off Date.

     DCR:  Duff & Phelps Credit Rating Co., or its successor in interest.

     Debt Service  Reduction:  With respect to any Mortgage Loan, a reduction in
the  scheduled  Monthly  Payment for such  Mortgage Loan by a court of competent
jurisdiction in a proceeding under the Bankruptcy Code,  except such a reduction
constituting a Deficient Valuation.

     Deficient  Valuation:  With respect to any Mortgage  Loan, a valuation by a
court of competent jurisdiction of the Mortgaged Property in an amount less than
the  then-outstanding  indebtedness under the Mortgage Loan, or any reduction in
the amount of  principal to be paid in  connection  with any  scheduled  Monthly
Payment that results in a permanent forgiveness of principal, which valuation or
reduction results from a proceeding under the Bankruptcy Code.

     Definitive Certificates:  As defined in Section 5.01(b).

     Denomination: The amount, if any, specified on the face of each Certificate
(other than the Class A-WIO Certificates)  representing the principal portion of
the Cut-Off Date Aggregate  Principal Balance evidenced by such Certificate.  As
to the Class A-WIO  Certificates,  the Percentage Interest specified on the face
of each Class A-WIO Certificate.

     Determination  Date:  The  17th  day of the  month  in  which  the  related
Distribution  Date  occurs,  or if such  17th  day is not a  Business  Day,  the
Business Day preceding such 17th day.

     Discount  Mortgage Loan: A Mortgage Loan with a Net Mortgage  Interest Rate
of less than 7.000%.

     Distribution  Date:  The  25th day of any  month,  beginning  in the  month
following the month of initial issuance of the Certificates, or if such 25th day
is not a Business Day, the Business Day following such 25th day.

     Due Date:  With respect to any Mortgage Loan, the day of the month in which
the Monthly Payment on such Mortgage Loan is scheduled to be paid.

     Eligible  Account:  One or more  accounts  (i) that are  maintained  with a
depository  institution  (which may be the Master Servicer) whose long-term debt
obligations  (or,  in the case of a  depository  institution  which is part of a
holding company structure, the long-term debt obligations of such parent holding
company)  at the  time of  deposit  therein  are  rated  at  least  "AA" (or the
equivalent) by each of the Rating Agencies, (ii) the deposits in which are fully
insured  by the FDIC  through  either  the Bank  Insurance  Fund or the  Savings
Association  Insurance Fund, (iii) the deposits in which are insured by the FDIC
through either the Bank Insurance Fund or the Savings Association Insurance Fund
(to the  limit  established  by the FDIC) and the  uninsured  deposits  in which
accounts are otherwise secured,  as evidenced by an Opinion of Counsel delivered
to the Trust Administrator,  such that the Trust Administrator, on behalf of the
Certificateholders  has a claim with respect to the funds in such  accounts or a
perfected  first security  interest  against any collateral  securing such funds
that  is  superior  to  claims  of any  other  depositors  or  creditors  of the
depository  institution  with which such accounts are maintained,  (iv) that are
trust  accounts  maintained  with the trust  department  of a  federal  or state
chartered  depository  institution  or trust  company  acting  in its  fiduciary
capacity  or (v) such other  account  that is  acceptable  to each of the Rating
Agencies  and would not cause the Trust  Estate to fail to qualify as a REMIC or
result in the imposition of any federal tax on the REMIC.

     Eligible  Investments:  At any  time,  any  one or  more  of the  following
obligations  and  securities  which shall mature not later than the Business Day
preceding the  Distribution  Date next  succeeding the date of such  investment,
provided that such investments continue to qualify as "cash flow investments" as
defined in Code Section 860G(a)(6):

               (i)  obligations  of the  United  States of America or any agency
          thereof,  provided such  obligations  are backed by the full faith and
          credit of the United States of America;

               (ii) general  obligations  of or  obligations  guaranteed  by any
          state of the  United  States of America or the  District  of  Columbia
          receiving the highest  short-term or highest  long-term rating of each
          Rating  Agency,  or such  lower  rating  as would  not  result  in the
          downgrading  or  withdrawal  of the rating then assigned to any of the
          Certificates  by either  Rating  Agency or result in any of such rated
          Certificates  being  placed on credit  review  status  (other than for
          possible upgrading) by either Rating Agency;

               (iii)  commercial or finance company paper which is then rated in
          the highest  long-term  commercial  or finance  company  paper  rating
          category  of each  Rating  Agency  or the  highest  short-term  rating
          category of each Rating Agency, or such lower rating category as would
          not  result  in the  downgrading  or  withdrawal  of the  rating  then
          assigned to any of the  Certificates by either Rating Agency or result
          in any of such rated Certificates being placed on credit review status
          (other than for possible upgrading) by either Rating Agency;

               (iv)  certificates of deposit,  demand or time deposits,  federal
          funds or banker's acceptances issued by any depository  institution or
          trust company  incorporated  under the laws of the United States or of
          any state  thereof  and  subject to  supervision  and  examination  by
          federal and/or state banking authorities, provided that the commercial
          paper and/or debt obligations of such depository  institution or trust
          company (or in the case of the principal  depository  institution in a
          holding company system,  the commercial  paper or debt  obligations of
          such holding company) are then rated in the highest  short-term or the
          highest  long-term  rating category for such securities of each of the
          Rating Agencies,  or such lower rating  categories as would not result
          in the downgrading or withdrawal of the rating then assigned to any of
          the  Certificates  by  either  Rating  Agency or result in any of such
          rated  Certificates  being placed on credit  review status (other than
          for possible upgrading) by either Rating Agency;

               (v)  guaranteed  reinvestment  agreements  issued  by  any  bank,
          insurance  company  or other  corporation  acceptable  to each  Rating
          Agency at the time of the issuance of such agreements;

               (vi)  repurchase  agreements on  obligations  with respect to any
          security  described in clauses (i) or (ii) above or any other security
          issued or  guaranteed  by an agency or  instrumentality  of the United
          States of  America,  in either  case  entered  into with a  depository
          institution or trust company  (acting as principal)  described in (iv)
          above;

               (vii)  securities  (other than stripped bonds or stripped  coupon
          securities)  bearing  interest  or sold at a  discount  issued  by any
          corporation  incorporated  under  the  laws of the  United  States  of
          America or any state thereof which,  at the time of such investment or
          contractual  commitment providing for such investment,  are then rated
          in the highest  short-term or the highest long-term rating category by
          each  Rating  Agency,  or in such lower  rating  category as would not
          result in the downgrading or withdrawal of the rating then assigned to
          any of the  Certificates  by either  Rating Agency or result in any of
          such rated  Certificates  being placed on credit  review status (other
          than for possible upgrading) by either Rating Agency; and

               (viii) such other investments acceptable to each Rating Agency as
          would not result in the downgrading of the rating then assigned to the
          Certificates  by either  Rating  Agency or result in any of such rated
          Certificates  being  placed on credit  review  status  (other than for
          possible upgrading) by either Rating Agency.

     In  no  event  shall  an  instrument  be an  Eligible  Investment  if  such
instrument  evidences either (i) a right to receive only interest  payments with
respect to the obligations  underlying such  instrument,  or (ii) both principal
and interest  payments derived from  obligations  underlying such instrument and
the interest and principal  payments with respect to such  instrument  provide a
yield to maturity at the date of investment of greater than 120% of the yield to
maturity at par of such underlying obligations.

     ERISA:  The Employee Retirement Income Security Act of 1974, as amended.

     ERISA Prohibited Holder:  As defined in Section 5.02(d).

     Errors  and  Omissions   Policy:  As  defined  in  each  of  the  Servicing
Agreements.

     Event of Default:  Any of the events specified in Section 7.01.

     Excess  Bankruptcy  Loss:  With  respect to any  Distribution  Date and any
Mortgage Loan as to which a Bankruptcy  Loss is realized in the month  preceding
the month of such  Distribution  Date, (i) if the Aggregate  Current  Bankruptcy
Losses  with  respect  to such  Distribution  Date  exceed  the  then-applicable
Bankruptcy Loss Amount,  then the portion of such Bankruptcy Loss represented by
the ratio of (a) the excess of the Aggregate Current  Bankruptcy Losses over the
then-applicable  Bankruptcy  Loss Amount,  divided by (b) the Aggregate  Current
Bankruptcy  Losses  or (ii) if the  Aggregate  Current  Bankruptcy  Losses  with
respect to such Distribution Date are less than or equal to the  then-applicable
Bankruptcy  Loss Amount,  then zero. In addition,  any Bankruptcy Loss occurring
with  respect  to a  Mortgage  Loan on or after the  Cross-Over  Date will be an
Excess Bankruptcy Loss.

     Excess Fraud Loss: With respect to any  Distribution  Date and any Mortgage
Loan as to which a Fraud Loss is  realized in the month  preceding  the month of
such  Distribution  Date, (i) if the Aggregate Current Fraud Losses with respect
to such Distribution Date exceed the then-applicable Fraud Loss Amount, then the
portion  of such Fraud  Loss  represented  by the ratio of (a) the excess of the
Aggregate  Current  Fraud  Losses over the  then-applicable  Fraud Loss  Amount,
divided by (b) the  Aggregate  Current  Fraud  Losses,  or (ii) if the Aggregate
Current  Fraud  Losses with respect to such  Distribution  Date are less than or
equal to the  then-applicable  Fraud Loss Amount,  then zero.  In addition,  any
Fraud Loss  occurring with respect to a Mortgage Loan on or after the Cross-Over
Date will be an Excess Fraud Loss.

     Excess Special Hazard Loss: With respect to any  Distribution  Date and any
Mortgage  Loan as to  which a  Special  Hazard  Loss is  realized  in the  month
preceding the month of such  Distribution  Date,  (i) if the  Aggregate  Current
Special  Hazard  Losses  with  respect  to such  Distribution  Date  exceed  the
then-applicable  Special  Hazard Loss  Amount,  then the portion of such Special
Hazard Loss represented by the ratio of (a) the excess of the Aggregate  Current
Special  Hazard  Losses over the  then-applicable  Special  Hazard Loss  Amount,
divided by (b) the  Aggregate  Current  Special  Hazard  Losses,  or (ii) if the
Aggregate  Current Special Hazard Losses with respect to such  Distribution Date
are less than or equal to the  then-applicable  Special Hazard Loss Amount, then
zero. In addition,  any Special Hazard Loss occurring with respect to a Mortgage
Loan on or after the Cross-Over Date will be an Excess Special Hazard Loss.

     Exhibit F-1 Mortgage Loan: Any of the Mortgage Loans  identified in Exhibit
F-1 hereto,  as such Exhibit may be amended from time to time in connection with
a substitution  pursuant to Section 2.02,  which Mortgage Loan is serviced under
the Norwest Servicing Agreement.

     Exhibit F-2 Mortgage Loan: Any of the Mortgage Loans  identified in Exhibit
F-2 hereto,  as such Exhibit may be amended from time to time in connection with
a substitution  pursuant to Section 2.02,  which Mortgage Loan is serviced under
the Norwest Servicing Agreement.

     Exhibit F-3 Mortgage Loan: Any of the Mortgage Loans  identified in Exhibit
F-3 hereto,  as such Exhibit may be amended from time to time in connection with
a substitution  pursuant to Section 2.02,  which Mortgage Loan is serviced under
an Other Servicing Agreement.

     FDIC:  The Federal Deposit Insurance Corporation or any successor thereto.

     FHLMC: The Federal Home Loan Mortgage Corporation or any successor thereto.

     Fidelity Bond:  As defined in each of the Servicing Agreements.

     Final   Distribution  Date:  The  Distribution  Date  on  which  the  final
distribution in respect of the Certificates is made pursuant to Section 9.01.

     FNMA:  Fannie Mae or any successor thereto.

     Foreclosure  Profits:  As to any Distribution  Date, the excess, if any, of
(i) Net  Liquidation  Proceeds  in respect of each  Mortgage  Loan that became a
Liquidated Loan during the Applicable  Unscheduled Principal Receipt Period with
respect to Full Unscheduled  Principal  Receipts for such Distribution Date over
(ii) the sum of the unpaid  principal  balance of each such Liquidated Loan plus
accrued and unpaid  interest at the  applicable  Mortgage  Interest  Rate on the
unpaid  principal  balance  thereof from the Due Date to which interest was last
paid by the Mortgagor (or, in the case of a Liquidated Loan that had been an REO
Mortgage Loan,  from the Due Date to which interest was last deemed to have been
paid) to the first day of the month in which such Distribution Date occurs.

     Fraud  Loss:  A  Liquidated  Loan  Loss as to which  there was fraud in the
origination of such Mortgage Loan.

     Fraud Loss Amount:  As of any  Distribution  Date after the Cut-Off Date an
amount  equal to:  (X) prior to the first  anniversary  of the  Cut-Off  Date an
amount  equal to  $6,991,731.23  minus  the  aggregate  amount  of Fraud  Losses
allocated  solely to the Class B Certificates or, following the reduction of the
Class B  Principal  Balance  to zero,  solely  to the  Class M  Certificates  in
accordance  with Section  4.02(a) since the Cut-Off Date, and (Y) from the first
through fifth anniversary of the Cut-Off Date, an amount equal to (1) the lesser
of (a) the Fraud Loss  Amount as of the most recent  anniversary  of the Cut-Off
Date and (b) 1.00% of the aggregate  outstanding principal balance of all of the
Mortgage  Loans as of the most recent  anniversary of the Cut-Off Date minus (2)
the Fraud Losses  allocated solely to the Class B Certificates or, following the
reduction  of the  Class B  Principal  Balance  to zero,  solely  to the Class M
Certificates   in  accordance   with  Section  4.02(a)  since  the  most  recent
anniversary of the Cut-Off Date. On and after the  Cross-Over  Date or after the
fifth anniversary of the Cut-Off Date the Fraud Loss Amount shall be zero.

     Full Unscheduled  Principal Receipt: Any Unscheduled Principal Receipt with
respect  to a  Mortgage  Loan (i) in the  amount  of the  outstanding  principal
balance of such  Mortgage Loan and  resulting in the full  satisfaction  of such
Mortgage  Loan or (ii)  representing  Liquidation  Proceeds  other than  Partial
Liquidation Proceeds.

     Holder:  See "Certificateholder."

     Independent:  When used with respect to any specified  Person,  such Person
who (i) is in fact  independent  of the  Seller,  the  Master  Servicer  and any
Servicer,  (ii) does not have any  direct  financial  interest  or any  material
indirect financial interest in the Seller or the Master Servicer or any Servicer
or in an affiliate of either,  and (iii) is not connected  with the Seller,  the
Master Servicer or any Servicer as an officer, employee, promoter,  underwriter,
trustee,  trust  administrator,  partner,  director or person performing similar
functions.

     Insurance Policy:  Any insurance or performance bond relating to a Mortgage
Loan or the Mortgage  Loans,  including  any hazard  insurance,  special  hazard
insurance,  flood insurance,  primary mortgage insurance,  mortgagor  bankruptcy
bond or title insurance.

     Insurance Proceeds:  Proceeds paid by any insurer pursuant to any Insurance
Policy covering a Mortgage Loan.

     Insured  Expenses:  Expenses  covered by any  Insurance  Policy  covering a
Mortgage Loan.

     Liquidated  Loan:  A  Mortgage  Loan  with  respect  to which  the  related
Mortgaged Property has been acquired,  liquidated or foreclosed and with respect
to which the applicable Servicer determines that all Liquidation  Proceeds which
it expects to recover have been recovered.

     Liquidated Loan Loss: With respect to any Distribution  Date, the aggregate
of the amount of losses  with  respect  to each  Mortgage  Loan  which  became a
Liquidated Loan during the Applicable  Unscheduled Principal Receipt Period with
respect to Full Unscheduled Principal Receipts for such Distribution Date, equal
to the excess of (i) the unpaid principal  balance of each such Liquidated Loan,
plus accrued interest  thereon in accordance with the  amortization  schedule at
the time  applicable  thereto at the applicable Net Mortgage  Interest Rate from
the Due Date as to which interest was last paid with respect thereto through the
last day of the  month  preceding  the  month in which  such  Distribution  Date
occurs, over (ii) Net Liquidation Proceeds with respect to such Liquidated Loan.

     Liquidation  Expenses:  Expenses  incurred by a Servicer in connection with
the liquidation of any defaulted  Mortgage Loan or property  acquired in respect
thereof (including,  without limitation,  legal fees and expenses,  committee or
referee fees, and, if applicable,  brokerage  commissions and conveyance taxes),
any unreimbursed  advances  expended by such Servicer  pursuant to its Servicing
Agreement  or  the  Master  Servicer  or  Trust  Administrator  pursuant  hereto
respecting the related Mortgage Loan,  including any  unreimbursed  advances for
real property taxes or for property  restoration or  preservation of the related
Mortgaged  Property.  Liquidation  Expenses  shall not  include  any  previously
incurred  expenses  in respect of an REO  Mortgage  Loan which have been  netted
against related REO Proceeds.

     Liquidation  Proceeds:  Amounts received by a Servicer (including Insurance
Proceeds) in connection  with the  liquidation  of defaulted  Mortgage  Loans or
property  acquired in respect  thereof,  whether  through  foreclosure,  sale or
otherwise,  including  payments in connection  with such Mortgage Loans received
from the  Mortgagor,  other than  amounts  required to be paid to the  Mortgagor
pursuant  to the terms of the  applicable  Mortgage  or to be applied  otherwise
pursuant to law.

     Loan-to-Value Ratio: The ratio, expressed as a percentage, the numerator of
which is the principal balance of a particular  Mortgage Loan at origination and
the denominator of which is the lesser of (x) the appraised value of the related
Mortgaged  Property  determined in the appraisal  used by the  originator at the
time of origination of such Mortgage Loan, and (y) if the Mortgage is originated
in  connection  with a sale of the Mortgaged  Property,  the sale price for such
Mortgaged Property.

     Master  Servicer:  Norwest Bank  Minnesota,  National  Association,  or its
successor in interest.

     Master   Servicing   Fee:  With  respect  to  any  Mortgage  Loan  and  any
Distribution  Date, the fee payable monthly to the Master  Servicer  pursuant to
Section 6.05 equal to a fixed percentage  (expressed as a per annum rate) of the
unpaid principal balance of such Mortgage Loan.

     Master Servicing Fee Rate:  As set forth in Section 11.27.

     Mid-Month Receipt Period:  With respect to each Distribution  Date, the one
month period beginning on the  Determination  Date (or, in the case of the first
Distribution  Date,  from and  including  the  Cut-Off  Date)  occurring  in the
calendar month  preceding the month in which such  Distribution  Date occurs and
ending on the day preceding the  Determination  Date immediately  preceding such
Distribution Date.

     Monthly Payment:  As to any Mortgage Loan (including any REO Mortgage Loan)
and any Due  Date,  the  payment  of  principal  and  interest  due  thereon  in
accordance with the amortization  schedule at the time applicable thereto (after
adjustment for any Curtailments and Deficient Valuations occurring prior to such
Due Date but before any adjustment to such amortization schedule, other than for
Deficient  Valuations,  by reason of any bankruptcy or similar proceeding or any
moratorium or similar waiver or grace period).

     Month End Interest:  As defined in each Servicing Agreement.

     Moody's:  Moody's Investors Service, Inc., or its successor in interest.

     Mortgage: The mortgage,  deed of trust or other instrument creating a first
lien on Mortgaged  Property  securing a Mortgage Note together with any Mortgage
Loan Rider, if applicable.

     Mortgage  Interest  Rate:  As to any Mortgage  Loan,  the per annum rate at
which interest accrues on the unpaid  principal  balance thereof as set forth in
the related  Mortgage  Note,  which rate is as indicated  on the  Mortgage  Loan
Schedule.

     Mortgage Loan Rider:  The standard  FNMA/FHLMC  riders to the Mortgage Note
and/or  Mortgage  riders  required when the Mortgaged  Property is a condominium
unit or a unit in a planned unit development.

     Mortgage Loan Schedule:  The list of the Mortgage Loans  transferred to the
Trust Administrator on the Closing Date as part of the Trust Estate and attached
hereto as Exhibits  F-1, F-2 and F-3,  which list may be amended  following  the
Closing Date upon  conveyance of a Substitute  Mortgage Loan pursuant to Section
2.02 or 2.03  and  which  list  shall  set  forth  at a  minimum  the  following
information  of the close of business on the Cut-Off  Date (or,  with respect to
Substitute  Mortgage  Loans,  as  of  the  close  of  business  on  the  day  of
substitution) as to each Mortgage Loan:

        (i)     the Mortgage Loan identifying number;

        (ii)    the city, state and zip code of the Mortgaged Property;

        (iii)   the type of property;

        (iv)    the Mortgage Interest Rate;

        (v)     the Net Mortgage Interest Rate;

        (vi)    the Monthly Payment;

        (vii)   the original number of months to maturity;

        (viii)  the scheduled maturity date;

        (ix)    the Cut-Off Date Principal Balance;

        (x)     the Loan-to-Value Ratio at origination;

        (xi)    whether such Mortgage Loan is a Subsidy Loan;

        (xii)   whether  such  Mortgage  Loan is  covered  by  primary  mortgage
                insurance;

        (xiii)  the Servicing Fee Rate;

        (xiv)   whether such Mortgage Loan is a T.O.P. Mortgage Loan;

        (xv)    the Master Servicing Fee; and

        (xvi)   for Mortgage  Loans  identified  on Exhibit F-3, the name of the
                Servicer with respect thereto.

     Such schedule may consist of multiple  reports that  collectively set forth
all of the information required.

     Mortgage Loans:  Each of the mortgage loans transferred and assigned to the
Trust  Administrator  on the  Closing  Date  pursuant  to  Section  2.01 and any
mortgage loans  substituted  therefor  pursuant to Section 2.02 or 2.03, in each
case as from time to time are included in the Trust Estate as  identified in the
Mortgage Loan Schedule.

     Mortgage Note: The note or other  evidence of  indebtedness  evidencing the
indebtedness  of a Mortgagor  under a Mortgage  Loan  together  with any related
Mortgage Loan Riders, if applicable.

     Mortgaged Property:  The property subject to a Mortgage,  which may include
Co-op Shares or residential long-term leases.

     Mortgagor: The obligor on a Mortgage Note.

     Net Foreclosure  Profits:  As to any Distribution Date, the amount, if any,
by which (i)  Aggregate  Foreclosure  Profits with respect to such  Distribution
Date exceed (ii) Liquidated Loan Losses with respect to such Distribution Date.

     Net Liquidation Proceeds:  As to any Liquidated Loan,  Liquidation Proceeds
net of Liquidation Expenses. For all purposes of this Agreement, Net Liquidation
Proceeds shall be allocated  first to accrued and unpaid interest on the related
Mortgage Loan and then to the unpaid principal balance thereof.

     Net Mortgage  Interest  Rate:  With respect to each  Mortgage  Loan, a rate
equal to (i) the Mortgage Interest Rate on such Mortgage Loan minus (ii) the sum
of (a) the  Servicing  Fee Rate,  as set forth in Section  11.26 with respect to
such  Mortgage  Loan and (b) the  Master  Servicing  Fee  Rate,  as set forth in
Section  11.27  with  respect  to  such  Mortgage  Loan.  Any  regular   monthly
computation of interest at such rate shall be based upon annual interest at such
rate on the applicable amount divided by twelve.

     Net Partial Liquidation Proceeds: Partial Liquidation Proceeds with respect
to a  Mortgage  Loan net of  unreimbursed  Liquidation  Expenses  incurred  with
respect to such Mortgage Loan. For all purposes of this  Agreement,  Net Partial
Liquidation  Proceeds shall be allocated first to accrued and unpaid interest on
the related Mortgage Loan and then to the unpaid principal balance thereof.

     Net REO  Proceeds:  As to any REO  Mortgage  Loan,  REO Proceeds net of any
related expenses of the Servicer.

     Non-permitted Foreign Holder: As defined in Section 5.02(d).

     Non-PO Fraction:  With respect to any Mortgage Loan, the lesser of (i) 1.00
and (ii) the quotient  obtained by dividing the Net Mortgage  Interest  Rate for
such Mortgage Loan by 7.000%.

     Non-PO  Voting  Interest:  The ratio  obtained by dividing the Pool Balance
(Non-PO  Portion) by the sum of the Pool Balance  (Non-PO  Portion) and the Pool
Balance (PO Portion).

     Nonrecoverable  Advance:  Any portion of a Periodic Advance previously made
or  proposed  to be made in  respect  of a  Mortgage  Loan  which  has not  been
previously  reimbursed  to the  Servicer,  the  Master  Servicer  or  the  Trust
Administrator, as the case may be, and which the Servicer or the Master Servicer
or the Trust  Administrator  determines  will not,  or in the case of a proposed
Periodic Advance would not, be ultimately  recoverable from Liquidation Proceeds
or other recoveries in respect of the related  Mortgage Loan. The  determination
by the Servicer,  the Master Servicer or the Trust Administrator (i) that it has
made a Nonrecoverable  Advance or (ii) that any proposed  Periodic  Advance,  if
made,  would  constitute  a  Nonrecoverable  Advance,  shall be  evidenced by an
Officer's  Certificate  of the  Servicer  delivered  to the Master  Servicer for
redelivery to the Trust  Administrator  or, in the case of a Master  Servicer or
Trust  Administrator  determination,  an  Officer's  Certificate  of the  Master
Servicer  or the Trust  Administrator  delivered  to the  Trustee,  in each case
detailing the reasons for such determination.

     Non-Supported  Interest  Shortfall:  With respect to any Distribution Date,
the excess,  if any,  of the  aggregate  Prepayment  Interest  Shortfall  on the
Mortgage  Loans over the  aggregate  Compensating  Interest with respect to such
Distribution  Date. With respect to each Distribution Date occurring on or after
the Cross-Over Date, the Non-Supported Interest Shortfall determined pursuant to
the preceding  sentence will be increased by the amount of any  Cross-Over  Date
Interest  Shortfall  for such  Distribution  Date.  Any  Non-Supported  Interest
Shortfall  will be  allocated to (a) the Class A  Certificates  according to the
percentage  obtained by dividing the Class A Non-PO Principal Balance by the sum
of the Class A Non-PO Principal  Balance,  the Class M Principal Balance and the
Class B  Principal  Balance,  (b)  the  Class M  Certificates  according  to the
percentage  obtained by dividing the Class M Principal Balance by the sum of the
Class A Non-PO Principal Balance,  the Class M Principal Balance and the Class B
Principal  Balance and (c) the Class B Certificates  according to the percentage
obtained  by dividing  the Class B  Principal  Balance by the sum of the Class A
Non-PO  Principal  Balance,  the  Class M  Principal  Balance  and  the  Class B
Principal Balance.

     Non-U.S. Person:  As defined in Section 4.01(f).

     Norwest Mortgage:  Norwest Mortgage, Inc., or its successor in interest.

     Norwest Mortgage  Correspondents:  The entities listed on the Mortgage Loan
Schedule, from which Norwest Mortgage purchased the Mortgage Loans.

     Norwest  Servicing  Agreement:  The Servicing  Agreement  providing for the
servicing of the Exhibit F-1 and Exhibit F-2 Mortgage Loans initially by Norwest
Mortgage.

     Officers' Certificate:  With respect to any Person, a certificate signed by
the  Chairman  of the  Board,  the  President  or a Vice  President,  and by the
Treasurer,  the  Secretary  or one  of the  Assistant  Treasurers  or  Assistant
Secretaries  of  such  Person  (or,  in the  case  of a  Person  which  is not a
corporation, signed by the person or persons having like responsibilities),  and
delivered to the Trustee or Trust Administrator, as the case may be.

     Opinion of Counsel:  A written  opinion of  counsel,  who may be outside or
salaried  counsel for the  Seller,  a Servicer  or the Master  Servicer,  or any
affiliate of the Seller,  a Servicer or the Master  Servicer,  acceptable to the
Trustee if such opinion is to be delivered to the Trustee,  or acceptable to the
Trust   Administrator   if  such  opinion  is  to  be  delivered  to  the  Trust
Administrator;  provided,  however, that with respect to REMIC matters,  matters
relating  to the  determination  of  Eligible  Accounts  or matters  relating to
transfers of Certificates, such counsel shall be Independent.

     Optimal  Adjustment  Event: With respect to the Class M Certificates or any
Class B Subclass and any  Distribution  Date, an Optimal  Adjustment  Event will
occur with  respect to such Class or Subclass if: (i) the  principal  balance of
such Class or Subclass on the  Determination  Date succeeding such  Distribution
Date  would have been  reduced to zero  (regardless  of whether  such  principal
balance  was  reduced  to zero as a  result  of  principal  distribution  or the
allocation  of  Realized  Losses)  and (ii) (a) any Class A  Subclass  Principal
Balance would be subject to further  reduction as a result of the third or fifth
sentence of the  definition  of Class A Subclass  Principal  Balance or (b) with
respect to any Class B Subclass,  the Class M  Principal  Balance or the Class B
Subclass  Principal  Balance  of a  Class  B  Subclass  with a  lower  numerical
designation  would be reduced with respect to such Distribution Date as a result
of the  application  of  clause  (ii) of the  definition  of  Class M  Principal
Balance,  Class B-1 Principal Balance,  Class B-2 Principal  Balance,  Class B-3
Principal Balance, Class B-4 Principal Balance or Class B-5 Principal Balance.

     Original Class A Percentage: The Class A Percentage as of the Cut-Off Date,
as set forth in Section 11.04.

     Original Class A Non-PO Principal Balance:  The sum of the Original Class A
Subclass Principal Balances of the Class A-1 and Class A-R Certificates,  as set
forth in Section 11.06.

     Original Class A Subclass  Principal  Balance:  Any of the Original Class A
Subclass Principal Balances as set forth in Section 11.05.

     Original  Class B  Principal  Balance:  The sum of the  Original  Class B-1
Principal  Balance,  Original  Class B-2 Principal  Balance,  Original Class B-3
Principal  Balance,  Original Class B-4 Principal Balance and Original Class B-5
Principal Balance, as set forth in Section 11.16.

     Original Class B-1 Fractional Interest:  As to the first Distribution Date,
the percentage  obtained by dividing the sum of the Original Class B-2 Principal
Balance,  the Original  Class B-3  Principal  Balance,  the  Original  Class B-4
Principal Balance and the Original Class B-5 Principal Balance by the sum of the
Original  Class A Non-PO  Principal  Balance,  the  Original  Class M  Principal
Balance and the  Original  Class B Principal  Balance.  The  Original  Class B-1
Fractional Interest is specified in Section 11.18.

     Original Class B-2 Fractional Interest:  As to the first Distribution Date,
the percentage  obtained by dividing the sum of the Original Class B-3 Principal
Balance,  the Original  Class B-4 Principal  Balance and the Original  Class B-5
Principal  Balance by the sum of the Original Class A Non-PO Principal  Balance,
the  Original  Class M  Principal  Balance  and the  Original  Class B Principal
Balance.  The  Original  Class B-2  Fractional  Interest is specified in Section
11.19.

     Original Class B-3 Fractional Interest:  As to the first Distribution Date,
the percentage  obtained by dividing the sum of the Original Class B-4 Principal
Balance and the Original Class B-5 Principal  Balance by the sum of the Original
Class A Non-PO Principal Balance, the Original Class M Principal Balance and the
Original Class B Principal Balance.  The Original Class B-3 Fractional  Interest
is specified in Section 11.20.

     Original Class B-4 Fractional Interest:  As to the first Distribution Date,
the percentage  obtained by dividing the Original Class B-5 Principal Balance by
the sum of the Original Class A Non-PO Principal  Balance,  the Original Class M
Principal Balance and the Original Class B Principal Balance. The Original Class
B-4 Fractional Interest is specified in Section 11.21.

     Original Class B-1  Percentage:  The Class B-1 Percentage as of the Cut-Off
Date, as set forth in Section 11.11.

     Original Class B-2  Percentage:  The Class B-2 Percentage as of the Cut-Off
Date, as set forth in Section 11.12.

     Original Class B-3  Percentage:  The Class B-3 Percentage as of the Cut-Off
Date, as set forth in Section 11.13.

     Original Class B-4  Percentage:  The Class B-4 Percentage as of the Cut-Off
Date, as set forth in Section 11.14.

     Original Class B-5  Percentage:  The Class B-5 Percentage as of the Cut-Off
Date, as set forth in Section 11.15.

     Original Class B-1 Principal Balance: The Class B-1 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-2 Principal Balance: The Class B-2 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-3 Principal Balance: The Class B-3 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-4 Principal Balance: The Class B-4 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-5 Principal Balance: The Class B-5 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class M Fractional  Interest:  As to the first  Distribution Date,
the percentage  obtained by dividing the Original  Class B Principal  Balance by
the sum of the Original Class A Non-PO Principal  Balance,  the Original Class M
Principal Balance and the Original Class B Principal Balance. The Original Class
M Fractional Interest is specified in Section 11.10.

     Original Class M Percentage: The Class M Percentage as of the Cut-Off Date,
as set forth in Section 11.08.

     Original Class M Principal Balance: The Class M Principal Balance as of the
Cut-Off Date, as set forth in Section 11.09.

     Original  Subordinated  Percentage:  The Subordinated  Percentage as of the
Cut-Off Date, as set forth in Section 11.07.

     Original  Subordinated  Principal Balance:  The sum of the Original Class M
Principal Balance and the Original Class B Principal Balance.

     Other Servicer: Any of the Servicers other than Norwest Mortgage.

     Other Servicing Agreements: The Servicing Agreements other than the Norwest
Servicing Agreement.

     Outstanding  Mortgage Loan: As to any Due Date, a Mortgage Loan  (including
an REO Mortgage Loan) which was not the subject of a Full Unscheduled  Principal
Receipt prior to such Due Date and which was not repurchased by the Seller prior
to such Due Date pursuant to Section 2.02 or 2.03.

     Owner Mortgage Loan File: A file maintained by the Trust  Administrator (or
the  Custodian,  if any) for each  Mortgage  Loan that  contains  the  documents
specified in the Servicing  Agreements  under their  respective  "Owner Mortgage
Loan File" definition or similar  definition  and/or other provisions  requiring
delivery of specified  documents to the owner of the Mortgage Loan in connection
with the purchase thereof,  and any additional documents required to be added to
the Owner Mortgage Loan File pursuant to this Agreement.

     Partial Liquidation  Proceeds:  Liquidation Proceeds received by a Servicer
prior to the month in which the related Mortgage Loan became a Liquidated Loan.

     Partial  Unscheduled  Principal Receipt:  An Unscheduled  Principal Receipt
which is not a Full Unscheduled Principal Receipt.

     Paying Agent: The Person  authorized on behalf of the Trust  Administrator,
as agent for the Master Servicer,  to make  distributions to  Certificateholders
with  respect  to the  Certificates  and to forward  to  Certificateholders  the
periodic and annual statements required by Section 4.04. The Paying Agent may be
any Person  directly or indirectly  controlling or controlled by or under common
control  with  the  Master  Servicer  and  may  be  the  Trustee  or  the  Trust
Administrator. The initial Paying Agent is appointed in Section 4.03(a).

     Payment Account:  The account maintained pursuant to Section 4.03(b).

     Percentage  Interest:  With respect to a Class A Certificate  (other than a
Class A-WIO Certificate), the undivided percentage interest obtained by dividing
the original  principal  balance of such  Certificate by the aggregate  original
principal balance of all Certificates of such Class A Subclass.  With respect to
the Class A-WIO  Certificate,  the percentage  interest specified on the face of
such  Certificate.  With  respect  to  a  Class  M  Certificate,  the  undivided
percentage  interest obtained by dividing the original principal balance of such
Certificate by the aggregate  original  principal balance of all Certificates of
such Class.  With respect to a Class B  Certificate,  the  undivided  percentage
interest obtained by dividing the original principal balance of such Certificate
by the aggregate  original principal balance of all Certificates of such Class B
Subclass.

     Periodic  Advance:  The aggregate of the advances  required to be made by a
Servicer on any Distribution Date pursuant to its Servicing  Agreement or by the
Master  Servicer or the Trust  Administrator  hereunder,  the amount of any such
advances  being equal to the total of all Monthly  Payments  (adjusted,  in each
case (i) in respect of interest,  to the applicable  Mortgage Interest Rate less
the applicable Servicing Fee in the case of Periodic Advances made by a Servicer
and to the  applicable  Net  Mortgage  Interest  Rate in the  case  of  Periodic
Advances  made by the Master  Servicer  or Trust  Administrator  and (ii) by the
amount of any related Debt Service  Reductions  or  reductions  in the amount of
interest  collectable from the Mortgagor  pursuant to the Soldiers' and Sailors'
Civil Relief Act of 1940, as amended, or similar legislation or regulations then
in effect) on the Mortgage  Loans,  that (x) were  delinquent as of the close of
business  on the  related  Determination  Date,  (y) were not the  subject  of a
previous  Periodic  Advance by such  Servicer  or of a  Periodic  Advance by the
Master Servicer or the Trust Administrator,  as the case may be and (z) have not
been determined by the Master Servicer,  such Servicer or Trust Administrator to
be Nonrecoverable Advances.

     Person:   Any   individual,   corporation,   partnership,   joint  venture,
association,   joint-stock  company,  trust,   unincorporated   organization  or
government or any agency or political subdivision thereof.

     Plan:  As defined in Section 5.02(c).

     PO Fraction:  With respect to any Discount  Mortgage  Loan,  the difference
between 1.0 and the Non-PO  Fraction for such Mortgage Loan; with respect to any
other Mortgage Loan, zero.

     Pool Balance (Non-PO Portion):  As of any Distribution Date, the sum of the
amounts  for each  Mortgage  Loan that is an  Outstanding  Mortgage  Loan of the
product of (i) the Non-PO Fraction for such Mortgage Loan and (ii) the Scheduled
Principal Balance of such Mortgage Loan.

     Pool Balance (PO  Portion):  As of any  Distribution  Date,  the sum of the
amounts  for each  Mortgage  Loan that is an  Outstanding  Mortgage  Loan of the
product of (i) the PO Fraction  for such  Mortgage  Loan and (ii) the  Scheduled
Principal Balance of such Mortgage Loan.

     Pool Distribution  Amount: As of any Distribution  Date, the funds eligible
for distribution to the Holders of the Certificates on such  Distribution  Date,
which  shall be the sum of (i) all  previously  undistributed  payments or other
receipts on account of  principal  and interest on or in respect of the Mortgage
Loans  (including,  without  limitation,  the  proceeds of any  repurchase  of a
Mortgage Loan by the Seller and any Substitution  Principal  Amount) received by
the Master Servicer with respect to the applicable  Remittance Date in the month
of such Distribution Date and any Unscheduled Principal Receipts received by the
Master  Servicer on or prior to the Business  Day  preceding  such  Distribution
Date,  (ii) all  Periodic  Advances  made by a Servicer  pursuant to the related
Servicing  Agreement  or Periodic  Advances  made by the Master  Servicer or the
Trust  Administrator  pursuant  to  Section  3.03 and (iii)  all  other  amounts
required to be placed in the  Certificate  Account by the  Servicer on or before
the  applicable  Remittance  Date  or  by  the  Master  Servicer  or  the  Trust
Administrator on or prior to the Distribution Date, but excluding the following:

     (a)  amounts  received  as late  payments  of  principal  or  interest  and
respecting which the Master Servicer or the Trust  Administrator has made one or
more unreimbursed Periodic Advances;

     (b)  the  portion  of  Net  Liquidation  Proceeds  used  to  reimburse  any
unreimbursed   Periodic   Advances   by  the  Master   Servicer   or  the  Trust
Administrator;

     (c) those  portions of each  payment of interest on a  particular  Mortgage
Loan  which  represent  (i) the  applicable  Servicing  Fee and (ii) the  Master
Servicing Fee;

     (d) all amounts  representing  scheduled payments of principal and interest
due after the Due Date  occurring in the month in which such  Distribution  Date
occurs;

     (e) all Unscheduled  Principal Receipts received by the Servicers after the
Applicable  Unscheduled  Principal  Receipt Period relating to the  Distribution
Date for the applicable type of Unscheduled  Principal Receipt,  and all related
payments of interest on such amounts;

     (f) all repurchase  proceeds with respect to Mortgage Loans  repurchased by
the Seller  pursuant to Section 2.02 or 2.03 on or following the Due Date in the
month in which such  Distribution  Date  occurs and the  difference  between the
unpaid  principal  balance of such  Mortgage  Loan  substituted  for a defective
Mortgage Loan during the month  preceding  the month in which such  Distribution
Date occurs and the unpaid principal balance of such defective Mortgage Loan;

     (g) that portion of Liquidation  Proceeds and REO Proceeds which represents
any unpaid Servicing Fee or Master Servicing Fee;

     (h) all income from Eligible  Investments  that is held in the  Certificate
Account for the account of the Master Servicer;

     (i) all  other  amounts  permitted  to be  withdrawn  from the  Certificate
Account in respect of the Mortgage  Loans,  to the extent not covered by clauses
(a)  through  (h) above,  or not  required to be  deposited  in the  Certificate
Account under this Agreement;

     (j) Net Foreclosure Profits;

     (k) Month End Interest; and

     (l) the  amount  of any  Recoveries  in  respect  of  principal  which  had
previously  been allocated as a loss to one or more Subclasses of the Class A or
Class B Certificates or the Class M Certificates  pursuant to Section 4.02 other
than Recoveries covered by the last sentence of Section 4.02(d).

     Pool  Scheduled  Principal  Balance:  As  to  any  Distribution  Date,  the
aggregate   Scheduled  Principal  Balances  of  all  Mortgage  Loans  that  were
Outstanding  Mortgage Loans on the Due Date in the month  preceding the month of
such Distribution Date.

     Premium Mortgage Loan: A Mortgage Loan with a Net Mortgage Interest Rate of
7.000% or greater.

     Prepayment In Full: With respect to any Mortgage Loan, a Mortgagor  payment
consisting of a Principal Prepayment in the amount of the outstanding  principal
balance of such loan and resulting in the full
satisfaction of such obligation.

     Prepayment  Interest  Shortfall:  On any  Distribution  Date, the amount of
interest,  if any,  that would have accrued on any  Mortgage  Loan which was the
subject  of a  Prepayment  in Full at the Net  Mortgage  Interest  Rate for such
Mortgage  Loan  from the date of its  Prepayment  in Full  (but in the case of a
Prepayment in Full where the Applicable  Unscheduled Principal Receipt Period is
the Mid-Month  Receipt Period,  only if the date of the Prepayment in Full is on
or  after  the  Determination  Date in the  month  prior  to the  month  of such
Distribution  Date and prior to the first day of the month of such  Distribution
Date) through the last day of the month prior to the month of such  Distribution
Date.

     Prepayment Shift  Percentage:  As to any Distribution  Date, the percentage
indicated below:

Distribution Date Occurring In
                                                                      Prepayment
                                                                           Shift
                                                                      Percentage

January 1998 through December 2002 ........................................   0%
January 2003 through December 2003 .......................................   30%
January 2004 through December 2004 .......................................   40%
January 2005 through December 2005 .......................................   60%
January 2006 through December 2006........................................   80%
January 2007 and  thereafter..............................................  100%

     Principal  Adjustment:  In the event  that the  Class M  Optimal  Principal
Amount,  Class B-1 Optimal Principal Amount, Class B-2 Optimal Principal Amount,
Class B-3 Optimal Principal Amount,  Class B-4 Optimal Principal Amount or Class
B-5 Optimal  Principal  Amount is calculated  in accordance  with the proviso in
such definition with respect to any Distribution Date, the Principal  Adjustment
for the Class M Certificates or such Class B Subclass shall equal the difference
between  (i) the  amount  that  would  have been  distributed  to such  Class or
Subclass as principal in accordance with Section  4.01(a) for such  Distribution
Date,  calculated  without  regard to such  proviso  and  assuming  there are no
Principal Adjustments for such Distribution Date and (ii) the Adjusted Principal
Balance for such Class or Subclass.

     Principal  Balance:  Each of the Class A Subclass Principal  Balances,  the
Class M  Principal  Balance,  the Class  B-1  Principal  Balance,  the Class B-2
Principal  Balance,  the Class B-3  Principal  Balance,  the Class B-4 Principal
Balance and the Class B-5 Principal Balance.

     Principal  Prepayment:  Any  Mortgagor  payment on a Mortgage Loan which is
received  in  advance  of its  Due  Date  and is not  accompanied  by an  amount
representing  scheduled  interest  for  any  period  subsequent  to the  date of
prepayment.

     Prior Month Receipt  Period:  With respect to each  Distribution  Date, the
calendar month preceding the month in which such Distribution Date occurs.

     Priority Amount:  For any Distribution  Date, the lesser of (i) the Class A
Subclass Principal Balance of the Class A-8 Certificates and (ii) the sum of (A)
the product of (1) the Priority Percentage, (2) the Shift Percentage and (3) the
Scheduled  Principal Amount and (B) the product of (1) the Priority  Percentage,
(2) the Prepayment Shift Percentage, and (3) the Unscheduled Principal Amount.

     Priority  Percentage:  The Class A Subclass  Principal Balance of the Class
A-8 Certificates divided by the Class A Non-PO Principal Balance.

     Prohibited Transaction Tax: Any tax imposed under Section 860F of the Code.

     Prudent  Servicing  Practices:  The  standard  of care  set  forth  in each
Servicing Agreement.

     Rating Agency: Any nationally recognized  statistical credit rating agency,
or its  successor,  that rated one or more  Classes of the  Certificates  at the
request of the Seller at the time of the initial  issuance of the  Certificates.
The Rating  Agencies for the Class A Certificates  and Class M Certificates  are
DCR and Moody's.  The Rating Agency for the Class B-1,  Class B-2, Class B-3 and
Class B-4 Certificates is DCR. If any such agency or a successor is no longer in
existence,  "Rating Agency" shall be such statistical  credit rating agency,  or
other comparable Person,  designated by the Seller,  notice of which designation
shall be given to the Trustee,  the Trust Administrator and the Master Servicer.
References  herein to the highest  short-term rating category of a Rating Agency
shall mean D-1+ in the case of DCR,  P-1 in the case of Moody's  and in the case
of any other Rating Agency shall mean its equivalent of such ratings. References
herein to the highest  long-term rating categories of a Rating Agency shall mean
AAA in the case of DCR, Aaa in the case of Moody's, and in the case of any other
Rating  Agency  shall mean its  equivalent  of such  rating  without any plus or
minus.

     Realized Losses: With respect to any Distribution Date, (i) Liquidated Loan
Losses  (including  Special Hazard Losses and Fraud Losses) and (ii)  Bankruptcy
Losses incurred in the month preceding the month of such Distribution Date.

     Record Date: The last Business Day of the month  preceding the month of the
related Distribution Date.

     Recovery:  Any  amount  received  on a  Mortgage  Loan  subsequent  to such
Mortgage Loan being determined to be a Liquidated Loan.

     Relevant Anniversary: See "Bankruptcy Loss Amount."

     REMIC:  A "real  estate  mortgage  investment  conduit"  as defined in Code
Section 860D. "The REMIC" means the REMIC constituted by the Trust Estate.

     REMIC  Provisions:  Provisions  of the federal  income tax law  relating to
REMICs, which appear at Sections 860A through 860G of Part IV of Subchapter M of
Chapter 1 of Subtitle A of the Code, and related provisions, and U.S. Department
of the Treasury temporary, proposed or final regulations promulgated thereunder,
as the foregoing are in effect (or,  with respect to proposed  regulations,  are
proposed to be in effect) from time to time.

     Remittance Date:  As defined in each of the Servicing Agreements.

     REO Mortgage Loan: Any Mortgage Loan which is not a Liquidated  Loan and as
to which the  indebtedness  evidenced by the related Mortgage Note is discharged
and the related Mortgaged Property is held as part of the Trust Estate.

     REO  Proceeds:  Proceeds  received  in  respect  of any REO  Mortgage  Loan
(including,  without  limitation,  proceeds  from  the  rental  of  the  related
Mortgaged Property).

     Request  for  Release:  A request  for  release in  substantially  the form
attached as Exhibit G hereto.

     Responsible  Officer:  When used with  respect to the  Trustee or the Trust
Administrator,  the  Chairman  or  Vice-Chairman  of the Board of  Directors  or
Trustees,  the Chairman or Vice-Chairman of the Executive or Standing  Committee
of the Board of  Directors  or  Trustees,  the  President,  the  Chairman of the
Committee on Trust Matters,  any Vice  President,  the Secretary,  any Assistant
Secretary,  the Treasurer,  any Assistant Treasurer,  the Cashier, any Assistant
Cashier,  any Trust Officer or Assistant  Trust Officer,  the Controller and any
Assistant  Controller  or  any  other  officer  of  the  Trustee  or  the  Trust
Administrator,  as the case may be, customarily  performing functions similar to
those performed by any of the  above-designated  officers and also, with respect
to a  particular  matter,  any other  officer  to whom such  matter is  referred
because of such  officer's  knowledge  of and  familiarity  with the  particular
subject.

     Rule 144A:  Rule 144A  promulgated  under the  Securities  Act of 1933,  as
amended.

     Scheduled  Principal  Amount:  The sum for each  outstanding  Mortgage Loan
(including  each defaulted  Mortgage Loan,  other than a Liquidated  Loan,  with
respect to which the related  Mortgaged  Property has been acquired by the Trust
Estate) of the product of (A) the Non-PO Fraction for such Mortgage Loan and (B)
the sum of the amounts  described in clauses y(i) and y(iv) of the definition of
Class A Non-PO Optimal Principal Amount.

     Scheduled Principal Balance: As to any Mortgage Loan and Distribution Date,
the  principal  balance  of such  Mortgage  Loan as of the Due Date in the month
preceding the month of such  Distribution  Date as specified in the amortization
schedule  at  the  time  relating   thereto   (before  any  adjustment  to  such
amortization  schedule  by  reason  of  any  bankruptcy  (other  than  Deficient
Valuations)  or similar  proceeding or any moratorium or similar waiver or grace
period) after giving effect to (A) Unscheduled  Principal  Receipts  received or
applied by the related Servicer during the related Unscheduled Principal Receipt
Period for each applicable type of Unscheduled  Principal Receipt related to the
Distribution Date occurring in the month preceding such  Distribution  Date, (B)
Deficient  Valuations  incurred  prior to such Due Date and (C) the  payment  of
principal due on such Due Date and irrespective of any delinquency in payment by
the  related  Mortgagor.  Accordingly,  the  Scheduled  Principal  Balance  of a
Mortgage Loan which  becomes a Liquidated  Loan at any time through the last day
of such related Unscheduled Principal Receipt Period shall be zero.

     Seller: Norwest Asset Securities Corporation, or its successor in interest.

     Senior  Optimal  Amount:  As to any  Distribution  Date,  the sum for  such
Distribution  Date of (a) the Class A Non-PO  Optimal  Amount  and (b) the Class
A-PO Optimal Principal Amount.

     Servicer   Mortgage  Loan  File:  As  defined  in  each  of  the  Servicing
Agreements.

     Servicers: Each of Norwest Mortgage Inc., First Union Mortgage Corporation,
SunTrust Mortgage Inc., First Bank National Association,  FT Mortgage Companies,
National City Mortgage  Company,  Farmers State Bank & Trust and The  Huntington
Mortgage Company as Servicer under the related Servicing Agreement.

     Servicing  Agreements:  Each  of the  Servicing  Agreements  executed  with
respect  to a  portion  of the  Mortgage  Loans by one of the  Servicers,  which
agreements are attached hereto, collectively, as Exhibit L.

     Servicing  Fee: With respect to any  Servicer,  as defined in its Servicing
Agreement.

     Servicing  Fee Rate:  With  respect  to a  Mortgage  Loan,  as set forth in
Section 11.26.

     Servicing  Officer:  Any officer of a Servicer  involved in, or responsible
for, the administration and servicing of the Mortgage Loans.

     Shift  Percentage:  As to any Distribution  Date, the percentage  indicated
below:

Distribution Date Occurring In                                  Shift Percentage

January 1998 through December 2002...................                   0%
January 2003 through December 2003...................                  30%
January 2004 through December 2004...................                  40%
January 2005 through December 2005...................                  60%
January 2006 through December 2006...................                  80%
January 2007 and thereafter..........................                 100%

     Similar Las: as defined in Section 5.02(e).

     Single  Certificate:  A Certificate of any Class or Subclass that evidences
the smallest permissible  Denomination for such Class or Subclass,  as set forth
in Section 11.25.

     Special  Hazard Loss:  (i) A Liquidated  Loan Loss  suffered by a Mortgaged
Property on account of direct  physical loss,  exclusive of (a) any loss covered
by a hazard  policy or a flood  insurance  policy  maintained in respect of such
Mortgaged Property pursuant to a Servicing  Agreement and (b) any loss caused by
or resulting from:

     (1)  normal wear and tear;

     (2)  infidelity,  conversion  or  other  dishonest  act on the  part of the
          Trustee,  the  Trust  Administrator  or the  Servicer  or any of their
          agents or employees; or

     (3)  errors in design,  faulty workmanship or faulty materials,  unless the
          collapse of the property or a part thereof ensues;

or (ii) any  Liquidated  Loan Loss suffered by the Trust Estate  arising from or
related to the presence or suspected  presence of hazardous  wastes or hazardous
substances on a Mortgaged  Property unless such loss to a Mortgaged  Property is
covered by a hazard policy or a flood insurance policy  maintained in respect of
such Mortgaged Property pursuant to a Servicing Agreement.

     Special Hazard Loss Amount: As of any Distribution Date, an amount equal to
$3,810,162.95 minus the sum of (i) the aggregate amount of Special Hazard Losses
allocated  solely to the Class B Certificates or, following the reduction of the
Class B  Principal  Balance  to zero,  solely  to the  Class M  Certificates  in
accordance  with Section 4.02(a) and (ii) the Special Hazard  Adjustment  Amount
(as defined  below) as most recently  calculated.  For each  anniversary  of the
Cut-Off Date, the Special Hazard Adjustment Amount shall be calculated and shall
be equal to the amount,  if any, by which the amount  calculated  in  accordance
with the  preceding  sentence  (without  giving  effect to the  deduction of the
Special Hazard Adjustment  Amount for such  anniversary)  exceeds the greater of
(A) the product of the Special Hazard Percentage for such anniversary multiplied
by  the  outstanding  principal  balance  of  all  the  Mortgage  Loans  on  the
Distribution  Date  immediately  preceding  such  anniversary,   (B)  twice  the
outstanding principal balance of the Mortgage Loan in the Trust Estate which has
the largest  outstanding  principal balance on the Distribution Date immediately
preceding  such  anniversary  and (C) that which is  necessary  to maintain  the
original  ratings on the  Certificates,  as  evidenced by letters to that effect
delivered by Rating Agencies to the Master Servicer and the Trust Administrator.
On and or after the  Cross-Over  Date,  the Special  Hazard Loss Amount shall be
zero.

     Special Hazard Percentage:  As of each anniversary of the Cut-Off Date, the
greater of (i) 1.00% and (ii) the largest  percentage  obtained by dividing  the
aggregate  outstanding  principal  balance  (as  of  the  immediately  preceding
Distribution Date) of the Mortgage Loans secured by Mortgaged Properties located
in a  single,  five-digit  zip  code  area in the  State  of  California  by the
outstanding  principal  balance of all the Mortgage Loans as of the  immediately
preceding Distribution Date.

     Startup Day:  As defined in Section 2.05.

     Subclass:  Each  subdivision  of  the  Class  A  Certificates,  denominated
respectively  as Class A-1,  Class A-2,  Class A-3,  Class A-4, Class A-5, Class
A-6,  Class  A-7,  Class A-8,  Class  A-PO,  Class  A-WIO and Class A-R and each
subdivision of the Class B Certificates,  denominated respectively as Class B-1,
Class B-2, Class B-3, Class B-4 and Class B-5.

     Subordinated Percentage:  As to any Distribution Date, the percentage which
is the difference between 100% and the Class A Percentage for such date.

     Subordinated  Prepayment  Percentage:  As to  any  Distribution  Date,  the
percentage  which is the  difference  between  100% and the  Class A  Prepayment
Percentage for such date.

     Subsidy  Loan:  Any Mortgage Loan subject to a temporary  interest  subsidy
agreement  pursuant to which the monthly  interest  payments made by the related
Mortgagor  will be less than the  scheduled  monthly  interest  payments on such
Mortgage Loan, with the resulting difference in interest payments being provided
by the employer of the  Mortgagor.  Each Subsidy Loan will be identified as such
in the Mortgage Loan Schedule.

     Substitute Mortgage Loan:  As defined in Section 2.02

     Substitution   Principal   Amount:   With  respect  to  any  Mortgage  Loan
substituted  in accordance  with Section 2.02 or pursuant to Section  2.03,  the
excess  of (x) the  unpaid  principal  balance  of the  Mortgage  Loan  which is
substituted for over (y) the unpaid principal balance of the Substitute Mortgage
Loan, each balance being determined as of the date of substitution.

     T.O.P.  Mortgage  Loan:  Any Mortgage  Loan that was  originated by Norwest
Mortgage or an  affiliate  thereof in  connection  with the "Title  Option Plus"
program  and which is not  covered  by a title  insurance  policy.  Each  T.O.P.
Mortgage Loan shall be identified as such in the Mortgage Loan Schedule.

     Trust  Administrator:   First  Union  National  Bank,  a  national  banking
association with its principal office located in Charlotte,  North Carolina,  or
any successor trust administrator appointed as herein provided.

     Trust Estate: The corpus of the trust created by this Agreement, consisting
of the  Mortgage  Loans,  such  amounts  as may be held from time to time in the
Certificate Account, and the rights of the Trust Administrator, on behalf of the
Trustee,  to receive the  proceeds of all  insurance  policies  and  performance
bonds,  if any,  required  to be  maintained  hereunder  or  under  the  related
Servicing  Agreement,  property which secured a Mortgage Loan and which has been
acquired by foreclosure or deed in lieu of foreclosure.

     Trustee:  United States Trust Company of New York, or any successor trustee
appointed as herein provided.

     Unpaid  Interest  Shortfalls:  Each of the Class A Subclass Unpaid Interest
Shortfalls, the Class M Unpaid Interest Shortfall, the Class B-1 Unpaid Interest
Shortfall,  the Class  B-2  Unpaid  Interest  Shortfall,  the  Class B-3  Unpaid
Interest  Shortfall,  the Class B-4 Unpaid Interest  Shortfall and the Class B-5
Unpaid Interest Shortfall.

     Unscheduled  Principal Amount:  The sum for each outstanding  Mortgage Loan
(including  each defaulted  Mortgage Loan,  other than a Liquidated  Loan,  with
respect to which the related  Mortgaged  Property has been acquired by the Trust
Estate) of the product of (A) the Non-PO Fraction for such Mortgage Loan and (B)
the sum of the amounts  described in clauses y(ii) and y(iii) of the  definition
of Class A Non-PO Optimal Principal Amount.

     Unscheduled  Principal Receipt:  Any Principal Prepayment or other recovery
of principal on a Mortgage  Loan,  including,  without  limitation,  Liquidation
Proceeds,  Net REO Proceeds and proceeds received from any condemnation award or
proceeds  in lieu of  condemnation  other  than that  portion  of such  proceeds
released  to the  Mortgagor  in  accordance  with the terms of the  Mortgage  or
Prudent  Servicing  Practices,  but  excluding any Net  Foreclosure  Profits and
proceeds of a repurchase of a Mortgage  Loan by the Seller and any  Substitution
Principal Amounts.  Except as set forth in the last sentence of Section 4.02(d),
a Recovery shall not be treated as an Unscheduled Principal Receipt.

     Unscheduled  Principal Receipt Period: Either a Mid-Month Receipt Period or
a Prior Month Receipt Period.

     U.S. Person:  As defined in Section 4.01(f).

     Voting  Interest:  With respect to any provisions  hereof providing for the
action,  consent  or  approval  of the  Holders of all  Certificates  evidencing
specified Voting  Interests in the Trust Estate,  (a) the Holders of the Class A
Certificates will  collectively be entitled to the Class A Voting Interest,  (b)
the Holders of the Class M  Certificates  will  collectively  be entitled to the
then applicable  percentage of the aggregate Voting Interest  represented by all
Certificates  equal to the product of (i) the ratio  obtained  by  dividing  the
Class M Principal  Balance by the sum of the Class A Non-PO  Principal  Balance,
the Class M Principal  Balance  and the Class B  Principal  Balance and (ii) the
Non-PO  Voting  Interest  and (c) the Holders of the Class B  Certificates  will
collectively  be  entitled  to the  balance  of the  aggregate  Voting  Interest
represented by all Series 1997-21  Certificates.  The aggregate Voting Interests
of each Subclass of Class A  Certificates  (other than the Class A-WIO and Class
A-PO  Certificates)  on any date will be equal to the  product of (a) 99% of the
portion  of the  Class  A  Voting  Interest  represented  by  clause  (A) of the
definition  thereof  and (b) the  fraction  obtained  by  dividing  the  Class A
Subclass  Principal  Balance  of such  Class A  Subclass  by the  Class A Non-PO
Principal Balance on such date. The aggregate Voting Interest of the Class A-WIO
Certificates  on any date will be 1% of the Class A Voting Interest on such date
represented  by clause (A) of the  definition  of Class A Voting  Interest.  The
aggregate  Voting  Interests of the Class A-PO  Certificates on any date will be
equal to the Class A Voting Interest represented by clause (B) of the definition
thereof. The aggregate Voting Interests of each Subclass of Class B Certificates
will equal such Subclass's pro rata portion of the Voting Interest  allocated to
the Class B Certificates based on such Subclass's outstanding principal balance.
Each  Certificateholder of a Class or Subclass will have a Voting Interest equal
to the  product  of the Voting  Interest  to which  such  Class or  Subclass  is
collectively  entitled  and the  Percentage  Interest  in such Class or Subclass
represented by such Holder's Certificates. With respect to any provisions hereof
providing  for  action,  consent  or  approval  of each  Class  or  Subclass  of
Certificates  or  specified   Classes  or  Subclasses  of   Certificates,   each
Certificateholder  of a Class or  Subclass  will have a Voting  Interest in such
Class or Subclass  equal to such Holder's  Percentage  Interest in such Class or
Subclass.

     Weighted Average Net Mortgage Interest Rate: As to any Distribution Date, a
rate per  annum  equal to the  average,  expressed  as a  percentage  of the Net
Mortgage  Interest  Rates of all Mortgage Loans that were  Outstanding  Mortgage
Loans as of the Due Date in the month  preceding the month of such  Distribution
Date,  weighted on the basis of the respective  Scheduled  Principal Balances of
such Mortgage Loans.

Section 1.02.     Acts of Holders.

     (a) Any request, demand, authorization,  direction, notice, consent, waiver
or other action  provided by this  Agreement to be given or taken by Holders may
be embodied in and evidenced by one or more instruments of substantially similar
tenor signed by such Holders in person or by an agent duly appointed in writing.
Except  as  herein  otherwise  expressly  provided,  such  action  shall  become
effective when such  instrument or instruments  are delivered to the Trustee and
the Trust  Administrator.  Proof of  execution  of any such  instrument  or of a
writing  appointing  any such agent shall be sufficient  for any purpose of this
Agreement and conclusive in favor of the Trustee and the Trust Administrator, if
made in the manner  provided in this Section 1.02.  The Trustee  shall  promptly
notify the Master  Servicer in writing of the receipt of any such  instrument or
writing.

     (b) The fact and date of the execution by any Person of any such instrument
or writing may be proved by the affidavit of a witness of such execution or by a
certificate  of a notary  public  or  other  officer  authorized  by law to take
acknowledgments of deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof.  When such execution is by
a signer acting in a capacity  other than his or her individual  capacity,  such
certificate or affidavit  shall also constitute  sufficient  proof of his or her
authority. The fact and date of the execution of any such instrument or writing,
or the authority of the individual executing the same, may also be proved in any
other manner which the Trustee deems sufficient.

     (c) The ownership of Certificates  (whether or not such Certificates  shall
be overdue and  notwithstanding  any  notation  of  ownership  or other  writing
thereon made by anyone other than the Trustee,  the Trust  Administrator and the
Authenticating Agent) shall be proved by the Certificate  Register,  and neither
the Trustee, the Trust  Administrator,  the Seller nor the Master Servicer shall
be affected by any notice to the contrary.

     (d) Any request, demand, authorization,  direction, notice, consent, waiver
or other action of the Holder of any Certificate  shall bind every future Holder
of the same  Certificate  and the Holder of every  Certificate  issued  upon the
registration of transfer  thereof or in exchange  therefor or in lieu thereof in
respect of anything  done,  omitted or suffered to be done by the  Trustee,  the
Trust  Administrator,  the Seller or the Master  Servicer in  reliance  thereon,
whether or not notation of such action is made upon such Certificate.

Section 1.03.     Effect of Headings and Table of Contents.

     The  Article  and  Section  headings  in this  Agreement  and the  Table of
Contents  are for  convenience  of  reference  only and  shall  not  affect  the
interpretation or construction of this Agreement.

Section 1.04.     Benefits of Agreement.

     Nothing in this Agreement or in the Certificates, express or implied, shall
give to any  Person,  other  than  the  parties  to  this  Agreement  and  their
successors  hereunder,  the Holders of the Certificates any benefit or any legal
or equitable right, power, remedy or claim under this Agreement.


<PAGE>

ARTICLE II

CONVEYANCE OF MORTGAGE LOANS;
ORIGINAL ISSUANCE OF THE CERTIFICATES

Section 2.01. Conveyance of Mortgage Loans.

     The Seller,  concurrently  with the  execution  and delivery  hereof,  does
hereby assign to the Trustee, without recourse all the right, title and interest
of the  Seller  in and to (a) the  Trust  Estate,  including  all  interest  and
principal  received by the Seller on or with respect to the Mortgage Loans after
the Cut-Off Date (and including scheduled payments of principal and interest due
after the Cut-Off  Date but received by the Seller on or before the Cut-Off Date
and Unscheduled  Principal Receipts received or applied on the Cut-Off Date, but
not including payments of principal and interest due on the Mortgage Loans on or
before the Cut-Off Date), (b) the Insurance Policies, (c) the obligations of the
Servicers under the Servicing  Agreements with respect to the Mortgage Loans and
(d) proceeds of all the foregoing.

     In connection with such assignment,  the Seller shall, with respect to each
Mortgage Loan, deliver, or cause to be delivered, to the Trust Administrator, as
initial  custodian,  on or before the Closing Date, an Owner Mortgage Loan File.
If any Mortgage or an assignment of a Mortgage to the Trust Administrator or any
prior  assignment is in the process of being  recorded on the Closing Date,  the
Seller  shall  deliver a copy  thereof,  certified  by Norwest  Mortgage  or the
applicable Norwest Mortgage  Correspondent to be a true and complete copy of the
document sent for recording,  and the Seller shall use its best efforts to cause
each such original  recorded  document or certified copy thereof to be delivered
to the Trust Administrator  promptly following its recordation,  but in no event
later than one (1) year  following the Closing Date. The Seller shall also cause
to be delivered to the Trust  Administrator  any other  original  mortgage  loan
document to be included in the Owner  Mortgage  Loan File if a copy  thereof has
been  delivered.  The Seller shall pay from its own funds,  without any right of
reimbursement  therefor,  the  amount of any  costs,  liabilities  and  expenses
incurred by the Trust  Estate by reason of the failure of the Seller to cause to
be  delivered  to the Trust  Administrator  within  one (1) year  following  the
Closing Date any original  Mortgage or assignment of a Mortgage not delivered to
the Trust Administrator on the Closing Date.

     In lieu of recording an  assignment  of any Mortgage the Seller may, to the
extent set forth in any Servicing Agreement, deliver or cause to be delivered to
the Trust  Administrator  the assignment of the Mortgage Loan from the Seller to
the Trust  Administrator  in a form suitable for  recordation,  together with an
Opinion of Counsel to the effect that  recording  is not required to protect the
Trustee's  right,  title and interest in and to the related Mortgage Loan or, in
case a  court  should  recharacterize  the  sale  of  the  Mortgage  Loans  as a
financing, to perfect a first priority security interest in favor of the Trustee
in the related  Mortgage  Loan. In the event that the Master  Servicer  receives
notice that  recording  is required to protect the right,  title and interest of
the  Trustee  in and to any such  Mortgage  Loan  for  which  recordation  of an
assignment has not previously been required,  the Master Servicer shall promptly
notify the Trust  Administrator  and the Trust  Administrator  shall within five
Business Days (or such other  reasonable  period of time mutually agreed upon by
the Master Servicer and the Trust  Administrator)  of its receipt of such notice
deliver  each  previously  unrecorded  assignment  to the related  Servicer  for
recordation.

Section 2.02.     Acceptance by Trust Administrator.

     The Trust Administrator on behalf of the Trustee,  acknowledges  receipt of
the Mortgage Notes, the Mortgages,  the assignments and other documents required
to be delivered on the Closing Date  pursuant to Section 2.01 above and declares
that it holds and will hold such documents and the other documents  constituting
a part of the Owner  Mortgage  Loan  Files  delivered  to it in trust,  upon the
trusts  herein set forth,  for the use and  benefit  of all  present  and future
Certificateholders.   The  Trust  Administrator   agrees,  for  the  benefit  of
Certificateholders, to review each Owner Mortgage Loan File within 45 days after
execution of this  Agreement in order to ascertain  that all required  documents
set forth in Section 2.01 have been executed and received and appear  regular on
their face, and that such documents  relate to the Mortgage Loans  identified in
the Mortgage Loan Schedule,  and in so doing the Trust Administrator may rely on
the  purported due  execution  and  genuineness  of any such document and on the
purported genuineness of any signature thereon. If within such 45 day period the
Trust Administrator finds any document  constituting a part of an Owner Mortgage
Loan  File not to have been  executed  or  received  or to be  unrelated  to the
Mortgage Loans identified in the Mortgage Loan Schedule or not to appear regular
on its face, the Trust  Administrator  shall promptly (and in no event more than
30 days after the discovery of such defect) notify the Seller,  which shall have
a period of 60 days  after the date of such  notice  within  which to correct or
cure any such  defect.  The Seller  hereby  covenants  and agrees  that,  if any
material defect is not so corrected or cured, the Seller will, not later than 60
days after the Trust  Administrator's  notice to it referred to above respecting
such defect,  either (i)  repurchase  the related  Mortgage Loan or any property
acquired in respect  thereof  from the Trust Estate at a price equal to (a) 100%
of the unpaid principal  balance of such Mortgage Loan plus (b) accrued interest
at the  Mortgage  Interest  Rate through the last day of the month in which such
repurchase  takes place or (ii) if within two years of the Startup  Day, or such
other period permitted by the REMIC Provisions, substitute for any Mortgage Loan
to which such  material  defect  relates,  a new  mortgage  loan (a  "Substitute
Mortgage  Loan") having such  characteristics  so that the  representations  and
warranties of the Seller set forth in Section 2.03(b) hereof (other than Section
2.03(b)(i))  would not have been  incorrect  had such  Substitute  Mortgage Loan
originally been a Mortgage Loan. In no event shall any Substitute  Mortgage Loan
have an unpaid principal balance,  as of the date of substitution,  greater than
the Scheduled  Principal  Balance (reduced by the scheduled payment of principal
due on the Due Date in the month of substitution) of the Mortgage Loan for which
it is  substituted.  In addition,  such  Substitute  Mortgage  Loan shall have a
Loan-to-Value  Ratio less than or equal to and a Mortgage Interest Rate equal to
that of the Mortgage Loan for which it is substituted.

     In the case of a repurchased Mortgage Loan or property,  the purchase price
shall be deposited by the Seller in the  Certificate  Account  maintained by the
Master Servicer  pursuant to Section 3.01. In the case of a Substitute  Mortgage
Loan,  the Owner  Mortgage Loan File relating  thereto shall be delivered to the
Trust  Administrator and the Substitution  Principal  Amount,  together with (i)
interest on such  Substitution  Principal  Amount at the applicable Net Mortgage
Interest  Rate to the  following  Due Date of such  Mortgage Loan which is being
substituted for and (ii) an amount equal to the aggregate amount of unreimbursed
Periodic Advances in respect of interest previously made by the Servicer, Master
Servicer or Trust  Administrator  with respect to such Mortgage  Loan,  shall be
deposited in the  Certificate  Account.  The Monthly  Payment on the  Substitute
Mortgage Loan for the Due Date in the month of substitution shall not be part of
the  Trust  Estate.   Upon  receipt  by  the  Trust   Administrator  of  written
notification of any such deposit signed by an officer of the Seller,  or the new
Owner  Mortgage  Loan File,  as the case may be, the Trust  Administrator  shall
release to the Seller the related Owner Mortgage Loan File and shall execute and
deliver  such  instrument  of  transfer  or  assignment,  in each  case  without
recourse,  as shall be  necessary  to vest in the  Seller  legal and  beneficial
ownership of such  substituted or repurchased  Mortgage Loan or property.  It is
understood  and agreed that the  obligation  of the Seller to  substitute  a new
Mortgage Loan for or repurchase any Mortgage Loan or property as to which such a
material  defect in a  constituent  document  exists shall  constitute  the sole
remedy  respecting such defect  available to the  Certificateholders,  the Trust
Administrator  on  behalf  of the  Trustee  and the  Trustee  on  behalf  of the
Certificateholders.  The failure of the Trust  Administrator  to give any notice
contemplated  herein  within  forty-five  (45) days after the  execution of this
Agreement shall not affect or relieve the Seller's  obligation to repurchase any
Mortgage Loan pursuant to this Section 2.02.

     The Trust  Administrator may,  concurrently with the execution and delivery
hereof or at any time thereafter, enter into a Custodial Agreement substantially
in the form of  Exhibit  E hereto  pursuant  to which  the  Trust  Administrator
appoints a Custodian to hold the Mortgage Notes, the Mortgages,  the assignments
and  other  documents  related  to the  Mortgage  Loans  received  by the  Trust
Administrator,  as agent for the Trustee in trust for the benefit of all present
and future  Certificateholders,  which may provide, among other things, that the
Custodian  shall conduct the review of such  documents  required under the first
paragraph of this Section 2.02.

Section 2.03.  Representations  and  Warranties  of the Master  Servicer and the
Seller.

     (a) The Master Servicer  hereby  represents and warrants to the Trustee and
the Trust  Administrator for the benefit of  Certificateholders  that, as of the
date of execution of this Agreement:

               (i) The Master Servicer is a national  banking  association  duly
          chartered and validly  existing in good standing under the laws of the
          United States;

               (ii) The execution  and delivery of this  Agreement by the Master
          Servicer and its  performance  and  compliance  with the terms of this
          Agreement will not violate the Master Servicer's  corporate charter or
          by-laws or  constitute  a default (or an event  which,  with notice or
          lapse of time, or both,  would  constitute a default) under, or result
          in the breach of, any material contract, agreement or other instrument
          to which the Master  Servicer is a party or which may be applicable to
          the Servicer or any of its assets;

               (iii) This Agreement,  assuming due authorization,  execution and
          delivery  by the  Trustee,  the Trust  Administrator  and the  Seller,
          constitutes  a valid,  legal  and  binding  obligation  of the  Master
          Servicer,  enforceable  against it in accordance with the terms hereof
          subject  to   applicable   bankruptcy,   insolvency,   reorganization,
          moratorium  and other laws  affecting  the  enforcement  of creditors'
          rights  generally and to general  principles of equity,  regardless of
          whether such enforcement is considered in a proceeding in equity or at
          law;

               (iv) The Master  Servicer is not in default  with  respect to any
          order or decree of any court or any order, regulation or demand of any
          federal,  state, municipal or governmental agency, which default might
          have  consequences  that would  materially  and  adversely  affect the
          condition (financial or other) or operations of the Master Servicer or
          its  properties  or might  have  consequences  that  would  affect its
          performance hereunder; and

               (v) No  litigation  is  pending  or,  to the  best of the  Master
          Servicer's  knowledge,  threatened  against the Master  Servicer which
          would  prohibit its entering  into this  Agreement or  performing  its
          obligations under this Agreement.

     It is understood  and agreed that the  representations  and  warranties set
forth in this Section  2.03(a) shall survive  delivery of the  respective  Owner
Mortgage Loan Files to the Trust Administrator or the Custodian.

     (b) The Seller hereby  represents and warrants to the Trustee and the Trust
Administrator  for the  benefit of  Certificateholders  that,  as of the date of
execution  of this  Agreement,  with  respect  to the  Mortgage  Loans,  or each
Mortgage Loan, as the case may be:

               (i) The  information  set forth in the Mortgage Loan Schedule was
          true  and  correct  in all  material  respects  at the  date or  dates
          respecting  which such  information  is  furnished as specified in the
          Mortgage Loan Schedule;

               (ii)   Immediately   prior  to  the   transfer   and   assignment
          contemplated  herein,  the Seller was the sole owner and holder of the
          Mortgage Loan free and clear of any and all liens, pledges, charges or
          security  interests of any nature and has full right and  authority to
          sell and assign the same;

               (iii) The Mortgage is a valid,  subsisting and enforceable  first
          lien on the property therein described,  and the Mortgaged Property is
          free and clear of all  encumbrances and liens having priority over the
          first lien of the Mortgage  except for liens for real estate taxes and
          special  assessments  not yet due and payable  and liens or  interests
          arising  under  or as a result  of any  federal,  state or local  law,
          regulation  or  ordinance  relating to  hazardous  wastes or hazardous
          substances,  and, if the related  Mortgaged  Property is a condominium
          unit, any lien for common  charges  permitted by statute or homeowners
          association fees; and if the Mortgaged  Property consists of shares of
          a  cooperative  housing  corporation,  any lien for amounts due to the
          cooperative  housing  corporation for unpaid assessments or charges or
          any lien of any assignment of rents or maintenance expenses secured by
          the real property owned by the cooperative  housing  corporation;  and
          any  security  agreement,  chattel  mortgage  or  equivalent  document
          related  to,  and  delivered  to  the  Trust  Administrator  or to the
          Custodian  with,  any Mortgage  establishes  in the Seller a valid and
          subsisting first lien on the property described therein and the Seller
          has full right to sell and assign the same to the Trustee;

               (iv)  Neither the Seller nor any prior  holder of the Mortgage or
          the related  Mortgage  Note has  modified  the Mortgage or the related
          Mortgage  Note  in  any  material  respect,  satisfied,   canceled  or
          subordinated the Mortgage in whole or in part,  released the Mortgaged
          Property  in  whole  or in part  from  the  lien of the  Mortgage,  or
          executed any  instrument  of release,  cancellation,  modification  or
          satisfaction,  except in each  case as is  reflected  in an  agreement
          delivered  to the Trust  Administrator  or the  Custodian  pursuant to
          Section 2.01;

               (v) All taxes, governmental assessments,  insurance premiums, and
          water,  sewer and municipal  charges,  which previously became due and
          owing have been paid, or an escrow of funds has been  established,  to
          the extent permitted by law, in an amount  sufficient to pay for every
          such item which remains unpaid; and the Seller has not advanced funds,
          or received any advance of funds by a party other than the  Mortgagor,
          directly  or   indirectly   (except   pursuant  to  any  Subsidy  Loan
          arrangement)  for the payment of any amount  required by the Mortgage,
          except for interest  accruing  from the date of the  Mortgage  Note or
          date of  disbursement  of the  Mortgage  Loan  proceeds,  whichever is
          later,  to the day which  precedes  by thirty  days the first Due Date
          under the related Mortgage Note;

               (vi)  The  Mortgaged   Property  is  undamaged  by  water,  fire,
          earthquake,  earth movement other than earthquake,  windstorm,  flood,
          tornado or similar casualty  (excluding  casualty from the presence of
          hazardous wastes or hazardous substances, as to which the Seller makes
          no  representations),  so as to  affect  adversely  the  value  of the
          Mortgaged  Property as security for the  Mortgage  Loan or the use for
          which  the  premises  were  intended  and to the best of the  Seller's
          knowledge,  there is no proceeding pending or threatened for the total
          or partial condemnation of the Mortgaged Property;

               (vii) The Mortgaged  Property is free and clear of all mechanics'
          and  materialmen's  liens or liens in the  nature  thereof;  provided,
          however,  that this warranty  shall be deemed not to have been made at
          the time of the initial issuance of the Certificates if a title policy
          affording, in substance, the same protection afforded by this warranty
          is furnished to the Trust Administrator by the Seller;

               (viii)  Except for  Mortgage  Loans  secured by Co-op  Shares and
          Mortgage Loans secured by residential  long-term leases, the Mortgaged
          Property consists of a fee simple estate in real property;  all of the
          improvements  which are  included for the purpose of  determining  the
          appraised  value of the  Mortgaged  Property  lie  wholly  within  the
          boundaries  and  building  restriction  lines of such  property and no
          improvements  on  adjoining  properties  encroach  upon the  Mortgaged
          Property  (unless  insured  against under the related title  insurance
          policy);  and to the best of the  Seller's  knowledge,  the  Mortgaged
          Property and all improvements  thereon comply with all requirements of
          any applicable zoning and subdivision laws and ordinances;

               (ix) The Mortgage Loan meets, or is exempt from, applicable state
          or federal laws,  regulations  and other  requirements,  pertaining to
          usury, and the Mortgage Loan is not usurious;

               (x) To the  best  of the  Seller's  knowledge,  all  inspections,
          licenses and  certificates  required to be made or issued with respect
          to all occupied  portions of the Mortgaged  Property and, with respect
          to the use and occupancy of the same,  including,  but not limited to,
          certificates  of occupancy and fire  underwriting  certificates,  have
          been made or obtained from the appropriate authorities;

               (xi)  All  payments  required  to be  made  up to  the  Due  Date
          immediately  preceding  the Cut-Off Date for such  Mortgage Loan under
          the terms of the related  Mortgage Note have been made and no Mortgage
          Loan had more  than one  delinquency  in the 12 months  preceding  the
          Cut-Off Date;

               (xii)  The  Mortgage  Note,   the  related   Mortgage  and  other
          agreements executed in connection  therewith are genuine,  and each is
          the  legal,  valid  and  binding  obligation  of  the  maker  thereof,
          enforceable in accordance with its terms,  except as such  enforcement
          may be  limited by  bankruptcy,  insolvency,  reorganization  or other
          similar laws affecting the enforcement of creditors'  rights generally
          and  by  general  equity   principles   (regardless  of  whether  such
          enforcement  is considered in a proceeding in equity or at law);  and,
          to the best of the  Seller's  knowledge,  all parties to the  Mortgage
          Note and the Mortgage had legal  capacity to execute the Mortgage Note
          and the Mortgage and each Mortgage Note and Mortgage has been duly and
          properly executed by the Mortgagor;

               (xiii) Any and all  requirements  of any federal,  state or local
          law with respect to the  origination of the Mortgage Loans  including,
          without   limitation,   truth-in-lending,   real   estate   settlement
          procedures,  consumer credit  protection,  equal credit opportunity or
          disclosure  laws  applicable to the Mortgage  Loans have been complied
          with;

               (xiv)  The  proceeds  of  the  Mortgage  Loans  have  been  fully
          disbursed,  there is no requirement for future advances thereunder and
          any and all  requirements  as to completion of any on-site or off-site
          improvements and as to disbursements of any escrow funds therefor have
          been complied  with (except for escrow funds for exterior  items which
          could  not be  completed  due to  weather);  and all  costs,  fees and
          expenses  incurred in making,  closing or recording  the Mortgage Loan
          have been paid,  except  recording  fees with respect to Mortgages not
          recorded as of the Closing Date;

               (xv) The Mortgage  Loan (except any Mortgage  Loan  identified on
          the Mortgage Loan Schedule as a T.O.P.  Mortgage Loan and any Mortgage
          Loan secured by  Mortgaged  Property  located in Iowa,  as to which an
          opinion of counsel of the type  customarily  rendered in such State in
          lieu of title insurance is instead received) is covered by an American
          Land  Title  Association  mortgagee  title  insurance  policy or other
          generally acceptable form of policy or insurance acceptable to FNMA or
          FHLMC,  issued by a title insurer acceptable to FNMA or FHLMC insuring
          the originator,  its successors and assigns,  as to the first priority
          lien of the Mortgage in the original  principal amount of the Mortgage
          Loan and subject only to (A) the lien of current real  property  taxes
          and assessments not yet due and payable, (B) covenants, conditions and
          restrictions,  rights of way,  easements  and other  matters of public
          record as of the date of  recording  of such  Mortgage  acceptable  to
          mortgage  lending  institutions  in the  area in which  the  Mortgaged
          Property  is  located or  specifically  referred  to in the  appraisal
          performed in connection with the  origination of the related  Mortgage
          Loan, (C) liens created  pursuant to any federal,  state or local law,
          regulation or ordinance  affording  liens for the costs of clean-up of
          hazardous  substances or hazardous  wastes or for other  environmental
          protection   purposes  and  (D)  such  other  matters  to  which  like
          properties are commonly subject which do not  individually,  or in the
          aggregate,  materially  interfere  with the  benefits of the  security
          intended  to be  provided  by the  Mortgage;  the  Seller  is the sole
          insured of such mortgagee  title insurance  policy,  the assignment to
          the Trust  Administrator,  on behalf of the  Trustee,  of the Seller's
          interest in such mortgagee title insurance policy does not require any
          consent of or  notification to the insurer which has not been obtained
          or made, such mortgagee  title  insurance  policy is in full force and
          effect and will be in full  force and effect and inure to the  benefit
          of the Trust  Administrator  on behalf of the Trustee,  no claims have
          been made under such mortgagee  title insurance  policy,  and no prior
          holder of the related Mortgage, including the Seller, has done, by act
          or  omission,  anything  which  would  impair  the  coverage  of  such
          mortgagee title insurance policy;

               (xvi) The  Mortgaged  Property  securing  each  Mortgage  Loan is
          insured by an insurer acceptable to FNMA or FHLMC against loss by fire
          and such  hazards as are covered  under a standard  extended  coverage
          endorsement, in an amount which is not less than the lesser of 100% of
          the  insurable  value of the  Mortgaged  Property and the  outstanding
          principal  balance of the Mortgage Loan, but in no event less than the
          minimum amount necessary to fully compensate for any damage or loss on
          a replacement  cost basis; if the Mortgaged  Property is a condominium
          unit, it is included  under the coverage  afforded by a blanket policy
          for the  project;  if  upon  origination  of the  Mortgage  Loan,  the
          improvements  on the Mortgaged  Property were in an area identified in
          the Federal  Register by the Federal  Emergency  Management  Agency as
          having special flood  hazards,  a flood  insurance  policy meeting the
          requirements  of  the  current  guidelines  of the  Federal  Insurance
          Administration  is in effect  with a  generally  acceptable  insurance
          carrier, in an amount representing coverage not less than the least of
          (A) the  outstanding  principal  balance of the Mortgage Loan, (B) the
          full  insurable  value of the  Mortgaged  Property and (C) the maximum
          amount of  insurance  which was  available  under the  National  Flood
          Insurance  Act of 1968, as amended;  and each  Mortgage  obligates the
          Mortgagor thereunder to maintain all such insurance at the Mortgagor's
          cost and expense;

               (xvii)  To  the  best  of the  Seller's  knowledge,  there  is no
          default, breach, violation or event of acceleration existing under the
          Mortgage or the related  Mortgage  Note and no event  which,  with the
          passage of time or with notice and the expiration of any grace or cure
          period,  would  constitute  a default,  breach,  violation or event of
          acceleration; the Seller has not waived any default, breach, violation
          or event of  acceleration;  and no  foreclosure  action  is  currently
          threatened or has been commenced with respect to the Mortgage Loan;

               (xviii) No  Mortgage  Note or Mortgage is subject to any right of
          rescission, set-off, counterclaim or defense, including the defense of
          usury, nor will the operation of any of the terms of the Mortgage Note
          or  Mortgage,  or the  exercise  of any right  thereunder,  render the
          Mortgage  Note or  Mortgage  unenforceable,  in whole  or in part,  or
          subject  it to any  right  of  rescission,  set-off,  counterclaim  or
          defense,  including  the  defense  of  usury,  and no  such  right  of
          rescission,  set-off,  counterclaim  or defense has been asserted with
          respect thereto;

               (xix)  Each  Mortgage  Note  is  payable  in  monthly   payments,
          resulting in complete amortization of the Mortgage Loan over a term of
          not more than 360 months;

               (xx) Each Mortgage contains customary and enforceable  provisions
          such as to render  the  rights  and  remedies  of the  holder  thereof
          adequate for the  realization  against the  Mortgaged  Property of the
          benefits  of  the   security,   including   realization   by  judicial
          foreclosure  (subject to any limitation  arising from any  bankruptcy,
          insolvency  or other law for the relief of  debtors),  and there is no
          homestead or other  exemption  available to the Mortgagor  which would
          interfere with such right of foreclosure;

               (xxi) To the best of the  Seller's  knowledge,  no Mortgagor is a
          debtor in any state or federal bankruptcy or insolvency proceeding;

               (xxii) Each  Mortgaged  Property is located in the United  States
          and consists of a one- to four-unit  residential  property,  which may
          include a detached home,  townhouse,  condominium  unit or a unit in a
          planned unit  development or, in the case of Mortgage Loans secured by
          Co-op Shares, leases or occupancy agreements;

               (xxiii) The Mortgage  Loan is a "qualified  mortgage"  within the
          meaning of Section 860G(a)(3) of the Code;

               (xxiv) With respect to each Mortgage  where a lost note affidavit
          has been delivered to the Trust  Administrator in place of the related
          Mortgage Note, the related Mortgage Note is no longer in existence;

               (xxv) In the event that the Mortgagor is an inter vivos  "living"
          trust,  (i) such trust is in compliance  with FNMA or FHLMC  standards
          for  inter  vivos  trusts  and (ii)  holding  title  to the  Mortgaged
          Property  in such  trust  will not  diminish  any rights as a creditor
          including  the right to full title to the  Mortgaged  Property  in the
          event foreclosure proceedings are initiated; and

               (xxvi) If the Mortgage Loan is secured by a long-term residential
          lease,  (1) the lessor under the lease holds a fee simple  interest in
          the land; (2) the terms of such lease expressly  permit the mortgaging
          of the  leasehold  estate,  the  assignment  of the lease  without the
          lessor's  consent and the acquisition by the holder of the Mortgage of
          the rights of the lessee upon  foreclosure  or  assignment  in lieu of
          foreclosure  or provide the holder of the Mortgage with  substantially
          similar protections;  (3) the terms of such lease do not (a) allow the
          termination  thereof upon the lessee's  default  without the holder of
          the  Mortgage  being  entitled  to  receive  written  notice  of,  and
          opportunity to cure,  such default,  (b) allow the  termination of the
          lease in the event of damage or destruction as long as the Mortgage is
          in  existence,  (c)  prohibit  the holder of the  Mortgage  from being
          insured  (or  receiving   proceeds  of  insurance)  under  the  hazard
          insurance policy or policies relating to the Mortgaged Property or (d)
          permit any increase in rent other than  pre-established  increases set
          forth in the lease;  (4) the  original  term of such lease is not less
          than 15 years;  (5) the term of such lease does not terminate  earlier
          than five years after the maturity date of the Mortgage  Note; and (6)
          the Mortgaged  Property is located in a jurisdiction  in which the use
          of  leasehold   estates  in  transferring   ownership  in  residential
          properties is a widely accepted practice.

     Notwithstanding the foregoing, no representations or warranties are made by
the Seller as to the  environmental  condition of any  Mortgaged  Property;  the
absence,  presence or effect of hazardous wastes or hazardous  substances on any
Mortgaged  Property;  any  casualty  resulting  from the  presence  or effect of
hazardous  wastes  or  hazardous  substances  on,  near or  emanating  from  any
Mortgaged  Property;  the  impact  on  Certificateholders  of any  environmental
condition  or  presence  of any  hazardous  substance  on or near any  Mortgaged
Property;  or the  compliance of any Mortgaged  Property with any  environmental
laws, nor is any agent,  person or entity  otherwise  affiliated with the Seller
authorized  or able to make any such  representation,  warranty or assumption of
liability relative to any Mortgaged Property. In addition, no representations or
warranties are made by the Seller with respect to the absence or effect of fraud
in the origination of any Mortgage Loan.

     It is understood  and agreed that the  representations  and  warranties set
forth in this Section  2.03(b) shall survive  delivery of the  respective  Owner
Mortgage Loan Files to the Trust Administrator and shall inure to the benefit of
the  Trust  Administrator,   on  behalf  of  the  Trustee   notwithstanding  any
restrictive or qualified endorsement or assignment.

     (c) Upon discovery by either the Seller, the Master Servicer,  the Trustee,
the Trust  Administrator  or the Custodian that any of the  representations  and
warranties made in subsection (b) above is not accurate (referred to herein as a
"breach") and that such breach materially and adversely affects the interests of
the  Certificateholders in the related Mortgage Loan, the party discovering such
breach shall give prompt  written  notice to the other  parties  (any  Custodian
being so obligated under a Custodial  Agreement).  Within 60 days of the earlier
of its  discovery or its receipt of notice of any such breach,  the Seller shall
cure such breach in all  material  respects or shall either (i)  repurchase  the
Mortgage Loan or any property  acquired in respect thereof from the Trust Estate
at a price equal to (A) 100% of the unpaid  principal  balance of such  Mortgage
Loan  plus (B)  accrued  interest  at the Net  Mortgage  Interest  Rate for such
Mortgage  Loan through the last day of the month in which such  repurchase  took
place or (ii) if within  two years of the  Startup  Day,  or such  other  period
permitted by the REMIC  Provisions,  substitute  for such  Mortgage  Loan in the
manner described in Section 2.02. The purchase price of any repurchase described
in this paragraph and the Substitution  Principal  Amount,  if any, plus accrued
interest  thereon and the other amounts  referred to in Section  2.02,  shall be
deposited  in the  Certificate  Account.  It is  understood  and agreed that the
obligation of the Seller to  repurchase  or substitute  for any Mortgage Loan or
property  as to  which  such a  breach  has  occurred  and is  continuing  shall
constitute   the   sole   remedy    respecting   such   breach    available   to
Certificateholders,  the Trust  Administrator  on behalf of the  Trustee  or the
Trustee on behalf of Certificateholders, and such obligation shall survive until
termination of the Trust Estate hereunder.

Section 2.04. Execution and Delivery of Certificates.

     The Trust  Administrator  acknowledges the assignment to it of the Mortgage
Loans and the delivery of the Owner Mortgage Loan Files to it, and, concurrently
with such  delivery,  has  executed  and  delivered  to or upon the order of the
Seller,  in exchange  for the  Mortgage  Loans  together  with all other  assets
included  in the  definition  of  "Trust  Estate",  receipt  of which is  hereby
acknowledged,  Certificates in authorized denominations which evidence ownership
of the entire Trust Estate.

Section 2.05. Designation of Certificates; Designation of Startup Day and Latest
Possible Maturity Date.

     The Seller hereby designates the Subclasses of Class A Certificates  (other
than the Class A-R Certificate),  the Class M Certificates and the Subclasses of
Class B  Certificates  as  classes  of  "regular  interests"  and the  Class A-R
Certificate  as the single  class of  "residual  interest"  in the REMIC for the
purposes of Code Sections 860G(a)(1) and 860G(a)(2),  respectively.  The Closing
Date is hereby  designated  as the "Startup Day" of the REMIC within the meaning
of Code Section  860G(a)(9).  The "latest possible maturity date" of the regular
interests  in the  REMIC is  January  25,  2028  for  purposes  of Code  Section
860G(a)(1).



<PAGE>
ARTICLE III

ADMINISTRATION OF THE TRUST ESTATE:  SERVICING
OF THE MORTGAGE LOANS

Section 3.01. Certificate Account.

     (a) The Master Servicer shall establish and maintain a Certificate  Account
for the deposit of funds  received by the Master  Servicer  with  respect to the
Mortgage  Loans  serviced by each  Servicer  pursuant  to each of the  Servicing
Agreements.  Such account shall be maintained as an Eligible Account. The Master
Servicer  shall give notice to each  Servicer  and the Seller of the location of
the Certificate Account and of any change in the location thereof.

     (b) The Master Servicer shall deposit into the  Certificate  Account on the
day of receipt thereof all amounts received by it from any Servicer  pursuant to
any of the  Servicing  Agreements,  and shall,  in  addition,  deposit  into the
Certificate  Account the following amounts,  in the case of amounts specified in
clause  (i),  not later than the  Distribution  Date on which such  amounts  are
required to be distributed to Certificateholders and, in the case of the amounts
specified in clause (ii), not later than the Business Day next following the day
of receipt and posting by the Master Servicer:

               (i)  Periodic  Advances  pursuant to Section  3.03(a) made by the
          Master  Servicer  or the Trust  Administrator,  if any and any amounts
          deemed  received by the Master Servicer  pursuant to Section  3.01(d);
          and

               (ii) in the case of any Mortgage Loan that is  repurchased by the
          Seller  pursuant to Section  2.02 or 2.03 or that is  auctioned by the
          Master  Servicer  pursuant to Section  3.08 or purchased by the Master
          Servicer pursuant to Section 3.08 or 9.01, the purchase price therefor
          or,  where  applicable,  any  Substitution  Principal  Amount  and any
          amounts  received in respect of the interest  portion of  unreimbursed
          Periodic Advances.

     (c) The Master Servicer shall cause the funds in the Certificate Account to
be invested in Eligible  Investments.  No such Eligible Investments will be sold
or  disposed  of at a gain prior to  maturity  unless the  Master  Servicer  has
received an Opinion of Counsel or other  evidence  satisfactory  to it that such
sale or disposition  will not cause the Trust Estate to be subject to Prohibited
Transactions Tax,  otherwise subject the Trust Estate to tax, or cause the Trust
Estate to fail to qualify as a REMIC while any Certificates are outstanding. Any
amounts  deposited in the  Certificate  Account prior to the  Distribution  Date
shall be invested  for the  account of the Master  Servicer  and any  investment
income  thereon  shall be  additional  compensation  to the Master  Servicer for
services  rendered under this  Agreement.  The amount of any losses  incurred in
respect of any such investments shall be deposited in the Certificate Account by
the Master Servicer out of its own funds immediately as realized.

     (d) For purposes of this  Agreement,  the Master Servicer will be deemed to
have received from a Servicer on the applicable  Remittance  Date for such funds
all  amounts  deposited  by such  Servicer  into the  Custodial  Account for P&I
maintained  in  accordance  with the  applicable  Servicing  Agreement,  if such
Custodial  Account  for  P&I is not an  Eligible  Account  as  defined  in  this
Agreement,  to the extent such amounts are not  actually  received by the Master
Servicer  on such  Remittance  Date as a result of the  bankruptcy,  insolvency,
receivership or other financial distress of the depository  institution in which
such  Custodial  Account  for P&I is being held.  To the extent that  amounts so
deemed to have been received by the Master Servicer are subsequently remitted to
the Master  Servicer,  the Master  Servicer  shall be  entitled  to retain  such
amounts.

Section 3.02. Permitted Withdrawals from the Certificate Account.

     (a) The Master Servicer may, from time to time, make  withdrawals  from the
Certificate Account for the following purposes (limited, in the case of Servicer
reimbursements, to cases where funds in the respective Custodial P&I Account are
not sufficient therefor):

               (i) to reimburse the Master Servicer,  the Trust Administrator or
          any Servicer for Periodic  Advances made by the Master Servicer or the
          Trust  Administrator  pursuant  to  Section  3.03(a)  or any  Servicer
          pursuant  to  any  Servicing   Agreement   with  respect  to  previous
          Distribution  Dates,  such  right to  reimbursement  pursuant  to this
          subclause  (i) being  limited to amounts  received on or in respect of
          particular  Mortgage Loans (including,  for this purpose,  Liquidation
          Proceeds,   REO  Proceeds  and  proceeds  from  the  purchase,   sale,
          repurchase  or  substitution  of Mortgage  Loans  pursuant to Sections
          2.02,  2.03, 3.08 or 9.01)  respecting which any such Periodic Advance
          was made;

               (ii) to reimburse any Servicer,  the Master Servicer or the Trust
          Administrator  for any Periodic  Advances  determined in good faith to
          have become Nonrecoverable Advances;

               (iii) to  reimburse  the Master  Servicer  or any  Servicer  from
          Liquidation Proceeds for Liquidation Expenses and for amounts expended
          by the  Master  Servicer  or any  Servicer  pursuant  hereto or to any
          Servicing  Agreement,  respectively,  in good faith in connection with
          the restoration of damaged property or for foreclosure expenses;

               (iv) from any  Mortgagor  payment on account of interest or other
          recovery  (including  Net REO  Proceeds)  with respect to a particular
          Mortgage  Loan,  to pay the Master  Servicing Fee with respect to such
          Mortgage Loan to the Master Servicer;

               (v) to reimburse the Master  Servicer,  any Servicer or the Trust
          Administrator (or, in certain cases, the Seller) for expenses incurred
          by it  (including  taxes  paid on  behalf  of the  Trust  Estate)  and
          recoverable  by or  reimbursable  to it pursuant  to Section  3.03(c),
          3.03(d) or 6.03 or the second  sentence of Section 8.14(a) or pursuant
          to such  Servicer's  Servicing  Agreement,  provided such expenses are
          "unanticipated" within the meaning of the REMIC Provisions;

               (vi) to pay to the Seller or other purchaser with respect to each
          Mortgage  Loan or property  acquired in respect  thereof that has been
          repurchased or replaced  pursuant to Section 2.02 or 2.03 or auctioned
          pursuant to Section 3.08 or to pay to the Master Servicer with respect
          to each Mortgage Loan or property acquired in respect thereof that has
          been purchased  pursuant to Section 3.08 or 9.01, all amounts received
          thereon and not required to be distributed as of the date on which the
          related  repurchase or purchase price or Scheduled  Principal  Balance
          was determined;

               (vii) to remit  funds to the Paying  Agent in the  amounts and in
          the manner provided for herein;

               (viii) to pay to the Master  Servicer any  interest  earned on or
          investment income with respect to funds in the Certificate Account;

               (ix) to pay to the Master  Servicer  or any  Servicer  out of Net
          Liquidation  Proceeds  allocable  to interest the amount of any unpaid
          Master  Servicing Fee or Servicing  Fee (as adjusted  pursuant to such
          Servicer's  Servicing  Agreement) and any unpaid assumption fees, late
          payment  charges or other  Mortgagor  charges on the related  Mortgage
          Loan;

               (x) to withdraw from the Certificate Account any amount deposited
          in the  Certificate  Account  that was not  required  to be  deposited
          therein; and

               (xi) to clear and terminate the Certificate  Account  pursuant to
          Section 9.01.

     (b) The Master Servicer shall keep and maintain separate  accounting,  on a
Mortgage Loan by Mortgage Loan basis,  for the purpose of justifying any payment
to and withdrawal from the Certificate Account.

Section 3.03. Advances by Master Servicer and Trust Administrator.

     (a) In the  event an Other  Servicer  fails to make any  required  Periodic
Advances of principal and interest on a Mortgage Loan as required by the related
Other Servicing  Agreement prior to the Distribution Date occurring in the month
during  which such  Periodic  Advance is due,  the  Master  Servicer  shall make
Periodic  Advances to the extent provided hereby.  In the event Norwest Mortgage
fails to make any  required  Periodic  Advances of  principal  and interest on a
Mortgage  Loan as  required  by the  Norwest  Servicing  Agreement  prior to the
Distribution  Date occurring in the month during which such Periodic  Advance is
due, the Trust Administrator shall, to the extent required by Section 8.15, make
such Periodic  Advance to the extent  provided  hereby,  provided that the Trust
Administrator  has previously  received the  certificate of the Master  Servicer
described in the following  sentence.  The Master  Servicer shall certify to the
Trust Administrator with respect to any such Distribution Date (i) the amount of
Periodic  Advances  required of Norwest Mortgage or such Other Servicer,  as the
case may be, (ii) the amount actually advanced,  (iii) the amount that the Trust
Administrator  or Master  Servicer  is required  to advance  hereunder  and (iv)
whether the Master Servicer has determined that it reasonably believes that such
Periodic  Advance is a  Nonrecoverable  Advance.  Amounts  advanced by the Trust
Administrator  or Master Servicer shall be deposited in the Certificate  Account
on the related  Distribution Date.  Notwithstanding  the foregoing,  neither the
Master Servicer nor the Trust Administrator will be obligated to make a Periodic
Advance that it reasonably  believes to be a Nonrecoverable  Advance.  The Trust
Administrator  may  conclusively  rely  for any  determination  to be made by it
hereunder  upon the  determination  of the Master  Servicer  as set forth in its
certificate.

     (b) To the extent an Other  Servicer fails to make an advance on account of
the taxes or  insurance  premiums  with  respect  to a  Mortgage  Loan  required
pursuant to the related Other Servicing Agreement, the Master Servicer shall, if
the Master  Servicer  knows of such failure of the Servicer,  advance such funds
and take such steps as are necessary to pay such taxes or insurance premiums. To
the extent Norwest  Mortgage fails to make an advance on account of the taxes or
insurance  premiums  with respect to a Mortgage  Loan  required  pursuant to the
Norwest Servicing  Agreement,  the Master Servicer shall, if the Master Servicer
knows of such failure of Norwest  Mortgage,  certify to the Trust  Administrator
that such failure has occurred.  Upon receipt of such  certification,  the Trust
Administrator  shall  advance such funds and take such steps as are necessary to
pay such taxes or insurance premiums.

     (c) The Master Servicer and the Trust  Administrator shall each be entitled
to be reimbursed from the Certificate  Account for any Periodic  Advance made by
it under  Section  3.03(a) to the extent  described  in Section  3.02(a)(i)  and
(a)(ii). The Master Servicer and the Trust Administrator shall be entitled to be
reimbursed  pursuant  to Section  3.02(a)(v)  for any  advance by it pursuant to
Section 3.03(b). The Master Servicer shall diligently pursue restoration of such
amount to the Certificate Account from the related Servicer. The Master Servicer
shall,  to the extent it has not already  done so, upon the request of the Trust
Administrator,  withdraw  from the  Certificate  Account  and remit to the Trust
Administrator  any  amounts  to which the Trust  Administrator  is  entitled  as
reimbursement pursuant to Section 3.02 (a)(i), (ii) and (v).

     (d) Except as  provided  in Section  3.03(a)  and (b),  neither  the Master
Servicer  nor the Trust  Administrator  shall be  required to pay or advance any
amount  which  any  Servicer  was  required,  but  failed,  to  deposit  in  the
Certificate Account.

Section 3.04. Trust  Administrator to Cooperate;  Release of Owner Mortgage Loan
Files.

     Upon the  receipt  by the  Master  Servicer  of a Request  for  Release  in
connection  with the deposit by a Servicer into the  Certificate  Account of the
proceeds from a Liquidated  Loan or of a Prepayment in Full, the Master Servicer
shall  confirm  to the  Trust  Administrator  that all  amounts  required  to be
remitted to the  Certificate  Account in connection with such Mortgage Loan have
been so  deposited,  and shall  deliver  such  Request  for Release to the Trust
Administrator.  The Trust Administrator  shall, within five Business Days of its
receipt of such a Request for Release,  release the related Owner  Mortgage Loan
File to the  Master  Servicer  or such  Servicer,  as  requested  by the  Master
Servicer. No expenses incurred in connection with any instrument of satisfaction
or deed of reconveyance shall be chargeable to the Certificate Account.

     From time to time and as  appropriate  for the servicing or  foreclosure of
any Mortgage Loan,  including but not limited to, collection under any insurance
policies, or to effect a partial release of any Mortgaged Property from the lien
of the Mortgage,  the Servicer of such Mortgage Loan shall deliver to the Master
Servicer a Request for Release.  Upon the Master Servicer's  receipt of any such
Request for Release,  the Master Servicer shall promptly forward such request to
the Trust Administrator and the Trust Administrator  shall, within five Business
Days,  release the related Owner  Mortgage  Loan File to the Master  Servicer or
such Servicer, as requested by the Master Servicer. Any such Request for Release
shall  obligate  the Master  Servicer or such  Servicer,  as the case may be, to
return each and every document previously requested from the Owner Mortgage Loan
File to the Trust  Administrator  by the  twenty-first day following the release
thereof,  unless (i) the Mortgage Loan has been  liquidated and the  Liquidation
Proceeds  relating to the Mortgage Loan have been  deposited in the  Certificate
Account or (ii) the Owner Mortgage Loan File or such document has been delivered
to an attorney,  or to a public trustee or other public  official as required by
law, for purposes of  initiating or pursuing  legal action or other  proceedings
for  the   foreclosure   of  the  Mortgaged   Property   either   judicially  or
non-judicially, and the Master Servicer has delivered to the Trust Administrator
a certificate of the Master Servicer or such Servicer  certifying as to the name
and  address  of the  Person  to which  such  Owner  Mortgage  Loan File or such
document  was  delivered  and the  purpose or purposes  of such  delivery.  Upon
receipt of an  Officer's  Certificate  of the Master  Servicer or such  Servicer
stating that such Mortgage Loan was liquidated and that all amounts  received or
to be received in  connection  with such  liquidation  which are  required to be
deposited  into the  Certificate  Account have been so  deposited,  or that such
Mortgage Loan has become an REO Mortgage  Loan, the Request for Release shall be
released by the Trust Administrator to the Master Servicer or such Servicer,  as
appropriate.

     Upon written  certification  of the Master Servicer or the Servicer of such
Mortgage Loan, the Trust  Administrator  shall execute and deliver to the Master
Servicer or such Servicer, as directed by the Master Servicer,  court pleadings,
requests for trustee's sale or other  documents  necessary to the foreclosure or
trustee's sale in respect of a Mortgaged Property or to any legal action brought
to obtain judgment  against any Mortgagor on the Mortgage Note or Mortgage or to
obtain a  deficiency  judgment,  or to  enforce  any  other  remedies  or rights
provided by the Mortgage  Note or Mortgage or  otherwise  available at law or in
equity.  Each such certification  shall include a request that such pleadings or
documents  be executed  by the Trust  Administrator  and a  statement  as to the
reason such  documents or pleadings  are  required  and that the  execution  and
delivery  thereof by the Trust  Administrator  will not  invalidate or otherwise
affect the lien of the Mortgage,  except for the termination of such a lien upon
completion of the foreclosure proceeding or trustee's sale.

Section 3.05. Reports to the Trustee and Trust Administrator;  Annual Compliance
Statements.

     (a) Not  later  than 15 days  after  each  Distribution  Date,  the  Master
Servicer  shall deliver to the Trustee and the Trust  Administrator  a statement
setting forth the status of the Certificate  Account as of the close of business
on such Distribution Date stating that all distributions  required to be made by
the Master  Servicer  under this  Agreement  have been made (or, if any required
distribution has not been made by the Master Servicer, specifying the nature and
status  thereof)  and showing,  for the period  covered by such  statement,  the
aggregate  amount of deposits  into and  withdrawals  from such account for each
category of deposit and  withdrawal  specified in Sections  3.01 and 3.02.  Such
statement may be in the form of the then current FNMA monthly  accounting report
for its Guaranteed Mortgage  Pass-Through Program with appropriate additions and
changes, and shall also include information as to the aggregate unpaid principal
balance of all of the Mortgage  Loans as of the close of business as of the last
day of the calendar month immediately  preceding such Distribution  Date. Copies
of  such  statement  shall  be  provided  by  the  Trust  Administrator  to  any
Certificateholder upon written request, provided such statement is delivered, or
caused to be delivered, by the Master Servicer to the Trust Administrator.

     (b) The  Master  Servicer  shall  deliver  to the  Trustee  and  the  Trust
Administrator  on or before  April 30 of each year, a  certificate  signed by an
officer of the Master  Servicer,  certifying  that (i) such officer has reviewed
the  activities of the Master  Servicer  during the  preceding  calendar year or
portion thereof and its performance under this agreement and (ii) to the best of
such  officer's  knowledge,  based  on such  review,  the  Master  Servicer  has
performed and fulfilled its duties,  responsibilities and obligations under this
agreement in all material respects throughout such year, or, if there has been a
default in the fulfillment of any such duties,  responsibilities or obligations,
specifying  each such  default  known to such  officer and the nature and status
thereof,  and, (iii) (A) the Master Servicer has received from each Servicer any
financial statements,  officer's certificates,  accountant's statements or other
information  required  to be  provided  to the Master  Servicer  pursuant to the
related  Servicing  Agreement and (B) to the best of such  officer's  knowledge,
based on a review of the  information  provided  to the Master  Servicer by each
Servicer as  described  in (iii)(A)  above,  each  Servicer  has  performed  and
fulfilled  its  duties,  responsibilities  and  obligations  under  the  related
Servicing  Agreement in all material respects throughout such year, or, if there
has been a default in the  fulfillment of any such duties,  responsibilities  or
obligations,  specifying  each such default known to such officer and the nature
and status thereof.  Copies of such officers'  certificate  shall be provided by
the Trust Administrator to any  Certificateholder  upon written request provided
such certificate is delivered, or caused to be delivered, by the Master Servicer
to the Trust Administrator.

Section 3.06. Title, Management and Disposition of Any REO Mortgage Loan.

     The  Master   Servicer   shall  ensure  that  each  REO  Mortgage  Loan  is
administered  by the  related  Servicer  at all  times so that it  qualifies  as
"foreclosure  property" under the REMIC Provisions and that it does not earn any
"net income from  foreclosure  property" which is subject to tax under the REMIC
Provisions.  In the  event  that a  Servicer  is unable  to  dispose  of any REO
Mortgage Loan within the period  mandated by each of the  Servicing  Agreements,
the Master Servicer shall monitor such Servicer to verify that such REO Mortgage
Loan is auctioned to the highest  bidder within the period so specified.  In the
event of any such sale of REO Mortgage Loan, the Trust  Administrator  shall, at
the  written  request  of the Master  Servicer  and upon  being  supported  with
appropriate  forms  therefor,  within five  Business  Days of the deposit by the
Master  Servicer of the  proceeds of such sale or auction  into the  Certificate
Account,  release or cause to be released to the entity identified by the Master
Servicer the related Owner  Mortgage  Loan File and Servicer  Mortgage Loan File
and shall execute and deliver such  instruments  of transfer or  assignment,  in
each  case  without  recourse,  as shall  be  necessary  to vest in the  auction
purchaser title to the REO Mortgage Loan and the Trust  Administrator shall have
no  further  responsibility  with  regard to such  Owner  Mortgage  Loan File or
Servicer  Mortgage  Loan  File.  Neither  the Trust  Administrator,  the  Master
Servicer nor any Servicer,  acting on behalf of the Trust Estate,  shall provide
financing from the Trust Estate to any purchaser of an REO Mortgage Loan.

Section  3.07.  Amendments  to Servicing  Agreements,  Modification  of Standard
Provisions.

     (a)  Subject  to the prior  written  consent of the  Trustee  and the Trust
Administrator pursuant to Section 3.07(b), the Master Servicer from time to time
may, to the extent permitted by the applicable  Servicing  Agreement,  make such
modifications and amendments to such Servicing  Agreement as the Master Servicer
deems necessary or appropriate to confirm or carry out more fully the intent and
purpose  of such  Servicing  Agreement  and  the  duties,  responsibilities  and
obligations to be performed by the Servicer  thereunder.  Such modifications may
only be made if they are consistent with the REMIC  Provisions,  as evidenced by
an Opinion of Counsel.  Prior to the issuance of any  modification or amendment,
the Master  Servicer  shall  deliver to the Trustee and the Trust  Administrator
such  Opinion of Counsel  and an  Officer's  Certificate  setting  forth (i) the
provision that is to be modified or amended,  (ii) the modification or amendment
that the Master  Servicer  desires to issue and (iii) the reason or reasons  for
such proposed amendment or modification.

     (b) The Trustee and the Trust  Administrator shall consent to any amendment
or supplement to a Servicing  Agreement proposed by the Master Servicer pursuant
to Section 3.07(a), which consent and amendment shall not require the consent of
any  Certificateholder  if it is (i) for the  purpose of curing  any  mistake or
ambiguity or to further  effect or protect the rights of the  Certificateholders
or (ii) for any other  purpose,  provided such  amendment or supplement for such
other   purpose   cannot    reasonably   be   expected   to   adversely   affect
Certificateholders.  The lack of reasonable  expectation of an adverse effect on
Certificateholders  may be  established  through the delivery to the Trustee and
the Trust  Administrator  of (i) an Opinion  of  Counsel to such  effect or (ii)
written  notification  from each Rating Agency to the effect that such amendment
or  supplement  will not result in reduction of the current  rating  assigned by
that Rating  Agency to the  Certificates.  Notwithstanding  the two  immediately
preceding  sentences,  either the Trustee or the Trust Administrator may, in its
discretion, decline to enter into or consent to any such supplement or amendment
if its own rights, duties or immunities shall be adversely affected.

     (c)(i)  Notwithstanding  anything to the contrary in this Section 3.07, the
Master   Servicer   from  time  to  time  may,   without   the  consent  of  any
Certificateholder,  the  Trustee  or the  Trust  Administrator,  enter  into  an
amendment (A) to an Other Servicing Agreement for the purpose of (i) eliminating
or reducing  Month End Interest and (ii)  providing  for the  remittance of Full
Unscheduled Principal Receipts by the applicable Servicer to the Master Servicer
not later than the 24th day of each month (or if such day is not a Business Day,
on the previous Business Day) or (B) to the Norwest Servicing  Agreement for the
purpose of changing the applicable Remittance Date to the 18th day of each month
(or if such day is not a Business Day, on the previous Business Day).

     (ii)The  Master  Servicer  may  direct  Norwest  Mortgage  to enter into an
amendment  to the Norwest  Servicing  Agreement  for the  purposes  described in
Sections 3.07(c)(i)(B) and 10.01(b)(iii).

Section 3.08. Oversight of Servicing.

     The Master Servicer shall  supervise,  monitor and oversee the servicing of
the Mortgage Loans by each Servicer and the  performance by each Servicer of all
services,  duties,  responsibilities  and obligations that are to be observed or
performed  by  the  Servicer  under  its  respective  Servicing  Agreement.   In
performing its obligations hereunder,  the Master Servicer shall act in a manner
consistent with Accepted Master Servicing Practices and with the Trustee's,  the
Trust  Administrator's  and  the  Certificateholders'  reliance  on  the  Master
Servicer,  and in a manner  consistent  with the  terms  and  provisions  of any
insurance  policy  required  to be  maintained  by the  Master  Servicer  or any
Servicer  pursuant to this  Agreement  or any  Servicing  Agreement.  The Master
Servicer  acknowledges  that prior to taking certain actions required to service
the  Mortgage  Loans,  each  Servicing  Agreement  provides  that  the  Servicer
thereunder must notify,  consult with, obtain the consent of or otherwise follow
the  instructions  of the Master  Servicer.  The Master  Servicer  is also given
authority  to waive  compliance  by a Servicer  with certain  provisions  of its
Servicing Agreement.  In each such instance,  the Master Servicer shall promptly
instruct such Servicer or otherwise  respond to such Servicer's  request.  In no
event will the Master Servicer  instruct such Servicer to take any action,  give
any consent to action by such Servicer or waive compliance by such Servicer with
any provision of such Servicer's  Servicing Agreement if any resulting action or
failure  to act  would be  inconsistent  with  the  requirements  of the  Rating
Agencies that rated the  Certificates  or would otherwise have an adverse effect
on the Certificateholders.  Any such action or failure to act shall be deemed to
have an adverse  effect on the  Certificateholders  if such action or failure to
act either results in (i) the  downgrading of the rating  assigned by any Rating
Agency to the  Certificates,  (ii) the loss by the Trust  Estate of REMIC status
for  federal  income tax  purposes  or (iii) the  imposition  of any  Prohibited
Transaction  Tax or any  federal  taxes on the  REMIC or the Trust  Estate.  The
Master  Servicer  shall have full power and authority in its sole  discretion to
take any  action  with  respect  to the  Trust  Estate  as may be  necessary  or
advisable to avoid the circumstances specified including clause (ii) or (iii) of
the preceding sentence.

     For the purposes of determining whether any modification of a Mortgage Loan
shall be  permitted  by the Trust  Administrator  or the Master  Servicer,  such
modification  shall be construed as a substitution of the modified Mortgage Loan
for the Mortgage Loan originally  deposited in the Trust Estate if it would be a
"significant  modification"  within the  meaning of Section  1.860G-2(b)  of the
regulations of the U.S.  Department of the Treasury.  No  modification  shall be
approved  unless (i) the modified  Mortgage  Loan would  qualify as a Substitute
Mortgage Loan under Section 2.02 and (ii) with respect to any modification  that
occurs more than three  months after the Closing Date and is not the result of a
default or a reasonably  foreseeable  default under the Mortgage Loan,  there is
delivered  to the Trust  Administrator  an Opinion of Counsel (at the expense of
the  party  seeking  to  modify  the  Mortgage  Loan) to the  effect  that  such
modification  would not be treated as giving rise to a new debt  instrument  for
federal income tax purposes as described in the preceding sentence.

     During the term of this Agreement,  the Master Servicer shall consult fully
with each  Servicer as may be  necessary  from time to time to perform and carry
out  the  Master  Servicer's   obligations   hereunder  and  otherwise  exercise
reasonable  efforts to  encourage  such  Servicer  to perform  and  observe  the
covenants,  obligations  and  conditions to be performed or observed by it under
its Servicing Agreement.

     The  relationship  of the  Master  Servicer  to the  Trustee  and the Trust
Administrator  under this  Agreement is intended by the parties to be that of an
independent contractor and not that of a joint venturer, partner or agent.

     The Master  Servicer  shall  administer  the Trust  Estate on behalf of the
Trustee  and shall have full power and  authority,  acting  alone or (subject to
Section  6.06) through one or more  subcontractors,  to do any and all things in
connection  with such  administration  which it may deem necessary or desirable.
Upon the execution and delivery of this Agreement,  and from time to time as may
be required  thereafter,  the Trust Administrator on behalf of the Trustee shall
furnish the Master  Servicer or its  subcontractors  with any powers of attorney
and such other documents as may be necessary or appropriate to enable the Master
Servicer to carry out its administrative duties hereunder.

     The Seller shall be entitled,  at its option,  to repurchase  any defaulted
Mortgage Loan or any Mortgage Loan as to which default is reasonably foreseeable
from the Trust Estate if, in the Seller's judgment, the default is not likely to
be cured by the Mortgagor;  provided,  however,  that the Cut-Off Date Principal
Balances of the Mortgage Loans repurchased  pursuant to this provision shall not
exceed 2.5% of the Cut-Off  Date  Aggregate  Principal  Balance of the  Mortgage
Loans. The purchase price for any such Mortgage Loan shall be 100% of the unpaid
principal  balance of such  Mortgage Loan plus accrued  interest  thereon at the
Mortgage  Interest  Rate  through  the  last  day of the  month  in  which  such
repurchase occurs.  Upon the receipt of such purchase price, the Master Servicer
shall provide to the Trust  Administrator the certification  required by Section
3.04 and the Trust  Administrator  and the  Custodian,  if any,  shall  promptly
release to the Seller the Owner Mortgage Loan File relating to the Mortgage Loan
being repurchased.

     In the event  that (i) the  Master  Servicer  determines  at any time that,
notwithstanding the representations and warranties set forth in Section 2.03(b),
any Mortgage  Loan is not a "qualified  mortgage"  within the meaning of Section
860G of the  Code  and (ii)  the  Master  Servicer  is  unable  to  enforce  the
obligation of the Seller to purchase such Mortgage Loan pursuant to Section 2.02
within two months of such  determination,  the Master  Servicer shall cause such
Mortgage  Loan to be auctioned  to the highest  bidder and sold out of the Trust
Estate no later than the date 90 days after such determination.  In the event of
any such sale of a Mortgage Loan, the Trust Administrator  shall, at the written
request of the Master Servicer and upon being supported with  appropriate  forms
therefor, within five Business Days of the deposit by the Master Servicer of the
proceeds of such auction into the  Certificate  Account,  release or cause to be
released to the entity  identified  by the Master  Servicer  the  related  Owner
Mortgage Loan File and Servicer Mortgage Loan File and shall execute and deliver
such instruments of transfer or assignment,  in each case without  recourse,  as
shall be necessary to vest in the auction  purchaser  title to the Mortgage Loan
and the Trust Administrator shall have no further  responsibility with regard to
such Owner Mortgage Loan File or Servicer Mortgage Loan File.  Neither the Trust
Administrator,  the Master  Servicer nor any  Servicer,  acting on behalf of the
Trust  Administrator,  shall  provide  financing  from the  Trust  Estate to any
purchaser of a Mortgage Loan.

     The Master Servicer, on behalf of the Trust Administrator,  shall, pursuant
to the Servicing  Agreements,  object to the foreclosure  upon, or other related
conversion of the ownership of, any Mortgaged  Property by the related  Servicer
if (i) the Master Servicer believes such Mortgaged  Property may be contaminated
with or  affected  by  hazardous  wastes or  hazardous  substances  or (ii) such
Servicer does not agree to administer such Mortgaged Property,  once the related
Mortgage  Loan becomes an REO Mortgage  Loan, in a manner which would not result
in a federal tax being imposed upon the Trust Estate or the REMIC.

     The Master  Servicer may enter into a special  servicing  agreement with an
unaffiliated  holder of 100%  Percentage  Interest  of a Class B  Subclass  or a
holder  of  a  class  of  securities  representing  interests  in  the  Class  B
Certificates and/or other subordinated mortgage pass-through certificates,  such
agreement to be substantially in the form of Exhibit M hereto or subject to each
Rating Agency's  acknowledgment  that the ratings of the  Certificates in effect
immediately prior to the entering into of such agreement would not be qualified,
downgraded  or  withdrawn  and the  Certificates  would  not be placed on credit
review status (except for possible upgrading) as a result of such agreement. Any
such  agreement  may contain  provisions  whereby  such holder may  instruct the
Master  Servicer to instruct a Servicer to the extent provided in the applicable
Servicing Agreement to commence or delay foreclosure proceedings with respect to
delinquent Mortgage Loans and will contain provisions for the deposit of cash by
the holder that would be available for  distribution  to  Certificateholders  if
Liquidation Proceeds are less than they otherwise may have been had the Servicer
acted in accordance with its normal procedures.

Section 3.09. Termination and Substitution of Servicing Agreements.

     Upon the  occurrence  of any event for which a Servicer  may be  terminated
pursuant to its Servicing Agreement,  the Master Servicer shall promptly deliver
to the Seller, the Trust Administrator and the Trustee an Officer's  Certificate
certifying  that an event has  occurred  which may justify  termination  of such
Servicing  Agreement,  describing the  circumstances  surrounding such event and
recommending  what action  should be taken by the Trustee  with  respect to such
Servicer.  If the Master Servicer  recommends  that such Servicing  Agreement be
terminated,  the Master Servicer's  certification  must state that the breach is
material  and not merely  technical  in nature.  Upon  written  direction of the
Master  Servicer,  based upon such  certification,  the Trustee  shall  promptly
terminate such Servicing Agreement.  Notwithstanding the foregoing, in the event
that (i) Norwest  Mortgage fails to make any advance,  as a consequence of which
the Trust Administrator is obligated to make an advance pursuant to Section 3.03
and (ii) the Trust Administrator provides Norwest Mortgage written notice of the
failure to make such advance and such failure shall  continue  unremedied  for a
period of 15 days after receipt of such notice,  the Trust  Administrator  shall
recommend  to the Trustee the  termination  of the Norwest  Servicing  Agreement
without the  recommendation of the Master Servicer and upon such  recommendation
the Trustee shall terminate the Norwest Servicing Agreement. The Master Servicer
shall indemnify the Trustee and the Trust  Administrator  and hold each harmless
from and against any and all claims, liabilities, costs and expenses (including,
without  limitation,  reasonable  attorneys'  fees)  arising out of, or assessed
against the Trustee or the Trust Administrator in connection with termination of
a Servicing Agreement at the direction of the Master Servicer. In addition,  the
Master  Servicer  shall  indemnify  the Trustee  and hold it  harmless  from and
against any and all claims, liabilities,  costs and expenses (including, without
limitation,  reasonable attorneys' fees) arising out of, or assessed against the
Trustee in connection with the termination of the Norwest Servicing Agreement as
provided  in the second  preceding  sentence.  If the  Trustee  terminates  such
Servicing Agreement, the Trustee may enter into a substitute Servicing Agreement
with the Master Servicer or, at the Master Servicer's  nomination,  with another
mortgage   loan  service   company   acceptable   to  the  Trustee,   the  Trust
Administrator, the Master Servicer and each Rating Agency under which the Master
Servicer or such substitute servicer, as the case may be, shall assume, satisfy,
perform and carry out all liabilities,  duties, responsibilities and obligations
that are to be, or otherwise were to have been, satisfied, performed and carried
out by such Servicer under such terminated Servicing Agreement.  Until such time
as the Trustee enters into a substitute  servicing agreement with respect to the
Mortgage Loans previously  serviced by such Servicer,  the Master Servicer shall
assume,  satisfy,  perform and carry out all obligations which otherwise were to
have been  satisfied,  performed  and  carried  out by such  Servicer  under its
terminated Servicing  Agreement.  However, in no event shall the Master Servicer
be deemed to have assumed the  obligations of a Servicer to advance  payments of
principal  and  interest on a delinquent  Mortgage  Loan in excess of the Master
Servicer's  independent  Periodic Advance  obligation under Section 3.03 of this
Agreement.  As compensation for the Master Servicer of any servicing obligations
fulfilled  or assumed  by the Master  Servicer,  the  Master  Servicer  shall be
entitled  to any  servicing  compensation  to which a  Servicer  would have been
entitled if the Servicing Agreement with such Servicer had not been terminated.

Section 3.10. 1934 Act Reports.

     The  Master  Servicer  shall,  on behalf of the  Seller,  make all  filings
required  to be made by the  Seller  with  respect  to the Class A  Certificates
(other than the Class A-PO and Class A-WIO),  the Class M  Certificates  and the
Class B-1 and Class B-2 Certificates  pursuant to the Securities Exchange Act of
1934, as amended.


<PAGE>

ARTICLE IV

DISTRIBUTIONS IN RESPECT OF CERTIFICATES;
PAYMENTS TO CERTIFICATEHOLDERS;
STATEMENTS AND REPORTS

Section 4.01. Distributions.

     (a) On each Distribution Date, the Pool Distribution Amount will be applied
in the  following  amounts,  to the  extent  the  Pool  Distribution  Amount  is
sufficient therefor, in the manner and in the order of priority as follows:

     first, to the Subclasses of Class A  Certificates,  pro rata based on their
respective  Class A Subclass  Interest Accrual Amounts in an aggregate amount up
to the sum of the Class A Subclass Interest Accrual Amounts with respect to such
Distribution Date;

     second, to the Subclasses of Class A Certificates,  pro rata based on their
respective Class A Subclass Unpaid Interest Shortfalls in an aggregate amount up
to the sum of the Class A Subclass Unpaid Interest Shortfalls;

     third, concurrently, to the Class A Certificates (other than the Class A-PO
Certificates)  and the  Class  A-PO  Certificates,  pro  rata,  based  on  their
respective  Class A Non-PO  Optimal  Principal  Amount  and Class  A-PO  Optimal
Principal Amount, (A) to the Subclasses of Class A Certificates  (other than the
Class  A-PO  Certificates),  in an  aggregate  amount  up to the  Class A Non-PO
Optimal  Principal  Amount,   such  distribution  to  be  allocated  among  such
Subclasses in accordance with Section 4.01(b) or Section 4.01(c), as applicable,
and (B) to the Class A-PO Certificates in an amount up to the Class A-PO Optimal
Principal Amount;

     fourth,  to the Class A-PO  Certificates  in an amount up to the Class A-PO
Deferred  Amount from amounts  otherwise  distributable  (without regard to this
Paragraph  fourth)  first to the Class B-5  Certificates  pursuant to  Paragraph
twenty-second, below, second to the Class B-4 Certificates pursuant to Paragraph
nineteenth,  below,  third to the Class B-3  Certificates  pursuant to Paragraph
sixteenth,  below,  fourth to the Class B-2  Certificates  pursuant to Paragraph
thirteenth,  below,  fifth to the Class B-1  Certificates  pursuant to Paragraph
tenth below, and sixth to the Class M Certificates pursuant to Paragraph seventh
below;

     fifth,  to the Class M Certificates in an amount up to the Class M Interest
Accrual Amount with respect to such Distribution Date;

     sixth,  to the Class M Certificates  in an amount up to the Class
M Unpaid Interest Shortfall;

     seventh, to the Class M Certificates in an amount up to the Class M Optimal
Principal Amount; provided,  however, that the amount distributable to the Class
M Certificates pursuant to this Paragraph seventh will be reduced by the amount,
if any, that would have been distributable to the Class M Certificates hereunder
used to pay the Class A-PO  Deferred  Amount as  provided  in  Paragraph  fourth
above;

     eighth,  to the  Class  B-1  Certificates  in an  amount  up to the Class B
Subclass  Interest Accrual Amount for the Class B-1 Certificates with respect to
such Distribution Date;

     ninth,  to the  Class  B-1  Certificates  in an  amount up to the
Class B-1 Unpaid Interest Shortfall;

     tenth,  to the  Class  B-1  Certificates  in an  amount up to the Class B-1
Optimal Principal Amount;  provided,  however,  that the amount distributable to
the Class B-1  Certificates  pursuant to this Paragraph tenth will be reduced by
the  amount,  if any,  that  would  have  been  distributable  to the  Class B-1
Certificates hereunder used to pay the Class A-PO Deferred Amount as provided in
Paragraph fourth above;

     eleventh,  to the  Class  B-2  Certificates  in an amount up to the Class B
Subclass  Interest Accrual Amount for the Class B-2 Certificates with respect to
such Distribution Date;

     twelfth,  to the  Class B-2  Certificates  in an amount up to the
Class B-2 Unpaid Interest Shortfall;

     thirteenth,  to the Class B-2 Certificates in an amount up to the Class B-2
Optimal Principal Amount;  provided,  however,  that the amount distributable to
the Class B-2 Certificates pursuant to this Paragraph thirteenth will be reduced
by the  amount,  if any,  that  would have been  distributable  to the Class B-2
Certificates hereunder used to pay the Class A-PO Deferred Amount as provided in
Paragraph fourth above;

     fourteenth,  to the Class B-3  Certificates  in an amount up to the Class B
Subclass  Interest Accrual Amount for the Class B-3 Certificates with respect to
such Distribution Date;

     fifteenth,  to the Class B-3  Certificates in an amount up to the
Class B-3 Unpaid Interest Shortfall;

     sixteenth,  to the Class B-3  Certificates in an amount up to the Class B-3
Optimal Principal Amount;  provided,  however,  that the amount distributable to
the Class B-3 Certificates  pursuant to this Paragraph sixteenth will be reduced
by the  amount,  if any,  that  would have been  distributable  to the Class B-3
Certificates hereunder used to pay the Class A-PO Deferred Amount as provided in
Paragraph fourth above;

     seventeenth,  to the Class B-4  Certificates in an amount up to the Class B
Subclass  Interest Accrual Amount for the Class B-4 Certificates with respect to
such Distribution Date;

     eighteenth,  to the Class B-4 Certificates in an amount up to the
Class B-4 Unpaid Interest Shortfall;

     nineteenth,  to the Class B-4 Certificates in an amount up to the Class B-4
Optimal Principal Amount;  provided,  however,  that the amount distributable to
the Class B-4 Certificates pursuant to this Paragraph nineteenth will be reduced
by the  amount,  if any,  that  would have been  distributable  to the Class B-4
Certificates hereunder used to pay the Class A-PO Deferred Amount as provided in
Paragraph fourth above;

     twentieth,  to the  Class B-5  Certificates  in an amount up to the Class B
Subclass  Interest Accrual Amount for the Class B-5 Certificates with respect to
such Distribution Date;

     twenty-first,  to the Class B-5  Certificates  in an amount up to
the Class B-5 Unpaid Interest Shortfall;

     twenty-second,  to the Class B-5  Certificates in an amount up to the Class
B-5 Optimal Principal Amount;  provided,  however, that the amount distributable
to the Class B-5 Certificates  pursuant to this Paragraph  twenty-second will be
reduced by the amount,  if any, that would have been  distributable to the Class
B-5  Certificates  hereunder  used to pay the  Class  A-PO  Deferred  Amount  as
provided in Paragraph fourth above; and

     twenty-third, to the Holder of the Class A-R Certificate.

     Notwithstanding  the  foregoing,  after the  Principal  Balance or notional
amount of any Class or Subclass (other than the Class A-R  Certificate) has been
reduced  to  zero,  such  Class  or  Subclass  will be  entitled  to no  further
distributions  of  principal or interest  (including,  without  limitation,  any
Unpaid Interest Shortfalls).

     In  addition,  Net  Foreclosure  Profits,  if  any,  with  respect  to such
Distribution  Date minus any portion thereof  payable to a Servicer  pursuant to
Section  3.02(ix)  hereof  shall be  distributed  to the Holder of the Class A-R
Certificate.

     With  respect  to any  Distribution  Date,  the  amount  of  the  Principal
Adjustment,  if any,  attributable to any Class B Subclass will be allocated pro
rata based on principal  balance among the Class A Certificates  (other than the
Class A-WIO and Class A-PO Certificates), the Class M Certificates and any Class
B Subclass with a lower  numerical  designation  and the amount of the Principal
Adjustment,  if any,  attributable to the Class M Certificates will be allocated
to the Subclasses of Class A Certificates  (other than the Class A-WIO and Class
A-PO Certificates) pro rata based on the Class A Subclass Principal Balances.

     (b) The Class A-WIO Certificates are interest-only Certificates and are not
entitled to distributions in respect of principal.

     On each Distribution Date occurring prior to the Cross-Over Date, the Class
A Non-PO Principal  Distribution  Amount will be allocated among and distributed
in reduction of the Class A Subclass  Principal  Balances of the  Subclasses  of
Class A Certificates  (other than the Class A Subclass  Principal Balance of the
Class A-PO Certificates) concurrently, as follows:


     first,  to the Class A-8  Certificates,  up to the Priority Amount for such
Distribution Date, until the Class A Subclass Principal Balance thereof has been
reduced to zero;

     second, to the Class A-R Certificate,  until the Class A Subclass Principal
Balance thereof has been reduced to zero;

     third,  concurrently,  until the Class A Subclass  Principal Balance of the
Class A-2 Certificates has been reduced to 64.9532710268% of its initial Class A
Subclass Principal Balance, as follows;

     (i) 77.0754882214% to the Class A-2 Certificates;

     (ii) 8.8339609423% to the Class A-1 Certificates; and

     (iii) 14.0905508363% to the Class A-4 Certificates;

     fourth, concurrently,  until the Class A Subclass Principal Balances of the
Class A-1 and Class A-4 Certificates have been reduced to zero, as follows;

     (i) 77.0754882214% to the Class A-2 Certificates;

     (ii) 8.8339609423% to the Class A-1 Certificates;

     (iii) 6.2819277812% to the Class A-4 Certificates; and

     (iv) 7.8086230551%,  sequentially, to the Class A-5 Certficates,  until the
Class A Subclass  Principal Balance thereof has been reduced to zero and then to
the Class A-6 Certificates;

     fifth, concurrently,

     (i)  77.0754882214%  to the  Class  A-2  Certificates,  until  the  Class A
Subclass Principal Balance thereof has been reduced to zero;

     (ii)  15.1158887235%  to the  Class  A-3  Certificates,  until  the Class A
Subclass Principal Balance thereof has been reduced to zero;

     (iii)  7.8086230551%  to the  Class  A-6  Certificates,  until  the Class A
Subclass Principal Balance of thereof has been reduced to zero;

     sixth, to the Class A-7 Certificates,  until the Class A Subclass Principal
Balance thereof has been reduced to zero; and

     seventh,  to the Class A-8  Certificates,  without  regard to the  Priority
Amount, until the Class A Subclass Principal Balance thereof has been reduced to
zero.

     (c) Notwithstanding  the foregoing,  on each Distribution Date occurring on
or subsequent to the Cross-Over Date, the Class A Non-PO Principal  Distribution
Amount shall be distributed among the Subclasses of Class A Certificates  (other
than the Class A-PO  Certificates) pro rata in accordance with their outstanding
Class A Subclass  Principal Balances without regard to either the proportions or
the priorities set forth in Section 4.01(b).

     (d) (i) For  purposes  of  determining  whether the  Subclasses  of Class B
Certificates are eligible to receive  distributions of principal with respect to
any Distribution Date, the following tests shall apply:

               (A) if the Current  Class M Fractional  Interest is less than the
          Original Class M Fractional Interest and the Class M Principal Balance
          is greater than zero,  the Class B-1,  Class B-2, Class B-3, Class B-4
          and  Class  B-5   Certificates   shall  not  be  eligible  to  receive
          distributions of principal; or

               (B) if the Current Class B-1 Fractional Interest is less than the
          Original  Class B-1  Fractional  Interest and the Class B-1  Principal
          Balance is greater than zero,  the Class B-2, Class B-3, Class B-4 and
          Class B-5 Certificates shall not be eligible to receive  distributions
          of principal; or

               (C) if the Current Class B-2 Fractional Interest is less than the
          Original  Class B-2  Fractional  Interest and the Class B-2  Principal
          Balance is greater than zero,  the Class B-3,  Class B-4 and Class B-5
          Certificates  shall  not  be  eligible  to  receive  distributions  of
          principal; or

               (D) if the Current Class B-3 Fractional Interest is less than the
          Original  Class B-3  Fractional  Interest and the Class B-3  Principal
          Balance is greater than zero, the Class B-4 and Class B-5 Certificates
          shall not be eligible to receive distributions of principal; or

               (E) if the Current Class B-4 Fractional Interest is less than the
          Original  Class B-4  Fractional  Interest and the Class B-4  Principal
          Balance is greater than zero, the Class B-5 Certificates  shall not be
          eligible to receive distributions of principal.

     (ii)  Notwithstanding  the  foregoing,  if on  any  Distribution  Date  the
aggregate  distributions  to  Holders  of the Class M  Certificates  and/or  the
Subclasses  of  Class  B  Certificates  entitled  to  receive  distributions  of
principal would reduce the Class M Principal Balance and/or the Class B Subclass
Principal Balances of the Class M Certificates  and/or the Subclasses of Class B
Certificates  entitled to receive  distributions  of principal below zero, first
the  Class M  Prepayment  Percentage  and/or  the  Class B  Subclass  Prepayment
Percentage of any affected Class B Subclass for such Distribution Date beginning
with the affected  Subclass with the lowest numerical  Subclass  designation and
then,  if  necessary,  the  Class M  Percentage  and/or  the  Class  B  Subclass
Percentage of such Subclass of the Class B  Certificates  for such  Distribution
Date shall be reduced to the respective percentages necessary to bring the Class
M Principal Balance and/or the Class B Subclass  Principal Balance of such Class
B Subclass to zero. The Class B Subclass Prepayment  Percentages and the Class B
Subclass  Percentages  of the  remaining  Class B Subclasses  will be recomputed
substituting  for  the  Subordinated   Prepayment  Percentage  and  Subordinated
Percentage in such  computations  the  difference  between (A) the  Subordinated
Prepayment  Percentage or Subordinated  Percentage,  as the case may be, and (B)
the percentages  determined in accordance with the preceding  sentence necessary
to bring the Class M  Principal  Balance  and/or the Class B Subclass  Principal
Balances of the affected Class B Subclasses to zero; provided,  however, that if
the Class B Subclass Principal  Balances of all the Class B Subclasses  eligible
to  receive  distributions  of  principal  shall  be  reduced  to  zero  on such
Distribution  Date, the Class B Subclass  Prepayment  Percentage and the Class B
Subclass  Percentage of the Class B Subclass with the lowest numerical  Subclass
designation  which would  otherwise be  ineligible to receive  distributions  of
principal  in  accordance  with this  Section  shall equal the  remainder of the
Subordinated  Prepayment  Percentage for such Distribution Date minus the sum of
the  Class  M  Prepayment   Percentage  and  the  Class  B  Subclass  Prepayment
Percentages  of  the  Class  B  Subclasses   having  lower  numerical   Subclass
designations,  if any, and the remainder of the Subordinated Percentage for such
Distribution  Date  minus  the sum of the  Class M  Percentage  and the  Class B
Subclass  Percentages of the Class B Subclasses having lower numerical  Subclass
designations,  if any, respectively.  Any entitlement of any Class B Subclass to
principal  payments  solely  pursuant  to this  clause (ii) shall not cause such
Subclass to be regarded as being eligible to receive principal distributions for
the purpose of applying the  definition  of its Class B Subclass  Percentage  or
Class B Subclass Prepayment Percentage.

     (e) On each  Distribution  Date other than the Final  Distribution Date (if
such Final  Distribution  Date is in connection with a purchase of the assets of
the Trust Estate by the Seller), the Paying Agent shall, on behalf of the Master
Servicer,  from funds remitted to it by the Master Servicer,  distribute to each
Certificateholder of record on the preceding Record Date (other than as provided
in Section 9.01 respecting the final  distribution to  Certificateholders  or in
the last paragraph of this Section 4.01(e)  respecting the final distribution in
respect of any Class or Subclass) either in immediately  available funds by wire
transfer  to the  account of such  Certificateholder  at a bank or other  entity
having  appropriate  facilities  therefor,  if  such   Certificateholder   holds
Certificates  having a Denomination  at least equal to that specified in Section
11.24,  and has so notified the Master  Servicer or, if  applicable,  the Paying
Agent at least seven  Business Days prior to the  Distribution  Date or, if such
Holder holds Certificates having, in the aggregate, a Denomination less than the
requisite minimum Denomination or if such Holder holds the Class A-R Certificate
or has not so notified the Paying  Agent,  by check mailed to such Holder at the
address of such Holder  appearing in the  Certificate  Register,  such  Holder's
share (based on, with respect to each Class or  Subclass,  the  aggregate of the
Percentage  Interests  represented by  Certificates  of the applicable  Class or
Subclass  of  Certificates  held  by  such  Holder)  of  the  Class  A  Subclass
Distribution  Amount with respect to each Subclass of Class A Certificates,  the
Class M  Distribution  Amount with respect to the Class M  Certificates  and the
Class B Subclass Distribution Amount with respect to each such Subclass of Class
B Certificates.

     In the event that, on any Distribution Date prior to the Final Distribution
Date,  the  Class A  Subclass  Principal  Balance  of any  Subclass  of  Class A
Certificates  (other  than the Class  A-R  Certificate),  the Class M  Principal
Balance of the Class M Certificates or the Class B Subclass Principal Balance of
any Subclass of Class B Certificates  or the notional  amount of the Class A-WIO
Certificates  would be reduced to zero, the Master  Servicer  shall,  as soon as
practicable  after the Determination  Date relating to such  Distribution  Date,
send a notice to the Trust Administrator. The Trust Administrator will then send
a notice to each  Certificateholder of such Class or Subclass with a copy to the
Certificate  Registrar,  specifying that the final  distribution with respect to
such  Class or  Subclass  will be made on such  Distribution  Date only upon the
presentation  and  surrender  of such  Certificateholder's  Certificates  at the
office  or  agency  of the  Trust  Administrator  therein  specified;  provided,
however,   that  the   failure  to  give  such   notice   will  not   entitle  a
Certificateholder  to any interest  beyond the interest  payable with respect to
such Distribution Date in accordance with Section 4.01(a).

     (f) The  Paying  Agent (or if no Paying  Agent is  appointed  by the Master
Servicer,  the Master  Servicer)  shall  withhold or cause to be  withheld  such
amounts as may be required  by the Code  (giving  full effect to any  exemptions
from  withholding  and  related  certifications  required  to  be  furnished  by
Certificateholders  and any reductions to withholding by virtue of any bilateral
tax  treaties  and any  applicable  certification  required to be  furnished  by
Certificateholders  with  respect  thereto)  from  distributions  to be  made to
Persons other than U.S. Persons ("Non-U.S.  Persons"). Amounts withheld pursuant
to this  Section  4.01(f)  shall be treated as having  been  distributed  to the
related  Certificateholder for all purposes of this Agreement.  For the purposes
of this  paragraph,  a "U.S.  Person"  is a citizen  or  resident  of the United
States, a corporation,  partnership (except to the extent provided in applicable
Treasury  regulations) or other entity created or organized in or under the laws
of the United States or any  political  subdivision  thereof,  an estate that is
subject to United  States  federal  income tax  regardless  of the source of its
income  or a trust if a court  within  the  United  States  is able to  exercise
primary  supervision over the administration of such trust, and one or more such
U.S.  Persons have the  authority to control all  substantial  decisions of such
trust (or, to the extent provided in applicable  Treasury  regulations,  certain
trusts in existence on August 20, 1996 which are eligible to elect to be treated
as U.S. Persons).

Section 4.02. Allocation of Realized Losses.

     (a) With  respect  to any  Distribution  Date,  the  principal  portion  of
Realized  Losses  (other than Debt Service  Reductions,  Excess  Special  Hazard
Losses,  Excess Fraud Losses and Excess Bankruptcy  Losses) will be allocated as
follows:

     first, to the Class B-5 Certificates  until the Class B-5 Principal Balance
has been reduced to zero;

     second, to the Class B-4 Certificates until the Class B-4 Principal Balance
has been reduced to zero;

     third, to the Class B-3 Certificates  until the Class B-3 Principal Balance
has been reduced to zero;

     fourth, to the Class B-2 Certificates until the Class B-2 Principal Balance
has been reduced to zero;

     fifth, to the Class B-1 Certificates  until the Class B-1 Principal Balance
has been reduced to zero;

     sixth, to the Class M Certificates  until the Class M Principal Balance has
been reduced to zero; and

     seventh,  concurrently,  to the Class A Certificates  (other than the Class
A-PO  Certificates) and Class A-PO  Certificates,  pro rata, based on the Non-PO
Fraction and the PO Fraction, respectively.

     This allocation of Realized  Losses will be effected  through the reduction
of the applicable Class's or Subclass's Principal Balance.

     (b) With respect to any Distribution  Date, the principal portion of Excess
Special  Hazard  Losses,  Excess  Fraud  Losses  and  Excess  Bankruptcy  Losses
occurring  with  respect  to any  Mortgage  Loan  allocable  to the  Class  A-PO
Certificates will equal the product of the amount of any such principal loss and
the PO Fraction for such  Mortgage  Loan.  The  principal  portion of any Excess
Special  Hazard  Losses,  Excess  Fraud  Losses  and  Excess  Bankruptcy  Losses
remaining after allocation to the Class A-PO Certificates in accordance with the
preceding  sentence  shall be allocated pro rata among the Class A  Certificates
(other  than the Class  A-PO  Certificates),  Class M  Certificates  and Class B
Certificates  based on the Class A Non-PO Principal  Balance,  Class M Principal
Balance and the Class B Principal Balance, respectively. Any such loss allocated
to the Class A Certificates  shall be allocated on the subsequent  Determination
Date among the  outstanding  Subclasses of Class A Certificates  (other than the
Class  A-PO   Certificates)  in  accordance  with  the  Class  A  Subclass  Loss
Percentages as of such Determination  Date. Any such loss allocated to the Class
B Certificates  shall be allocated pro rata among the outstanding  Subclasses of
Class B Certificates based on their Class B Subclass Principal Balances.

     (c) Any Realized Losses  allocated to a Subclass of Class A Certificates or
Class B Certificates or to the Class M Certificates  pursuant to Section 4.02(a)
or Section 4.02(b) shall be allocated among the Certificates of such Subclass or
Class based on their Percentage Interests.

     (d) In the event  that  there is a  Recovery  of an amount  in  respect  of
principal of a Mortgage Loan which had  previously  been allocated as a Realized
Loss to any Subclasses of Class A Certificates,  the Class M Certificates or any
Subclasses of Class B Certificates,  each outstanding Class or Subclass to which
such Realized Loss had previously  been allocated shall be entitled to its share
(with respect to the Class A-PO  Certificates,  based on the PO Fraction of such
Mortgage  Loan and,  with  respect to the Class A  Certificates  (other than the
Class A-PO Certificates),  Class M Certificates and Class B Certificates,  based
on their pro rata share of the Non-PO  Fraction of such  Mortgage  Loan) of such
Recovery up to the amount of such  Realized  Loss  previously  allocated to such
Class or Subclass on the  Distribution  Date in the month following the month in
which  such  recovery  is  received.  When the  Principal  Balance of a Class or
Subclass of Certificates  has been reduced to zero, such Class or Subclass shall
not be entitled to any share of such  Recovery.  In the event that the amount of
such Recovery exceeds the amount of such Recovery  allocated to each outstanding
Class or Subclass in accordance with the preceding provisions,  each outstanding
Class  or  Subclass  shall be  entitled  to its pro rata  share  (determined  as
described  above) of such  excess up to the amount of any  unrecovered  Realized
Loss  previously  allocated  to such  Class  or  Subclass.  Notwithstanding  the
foregoing  provisions,  but subject to the following  proviso,  if such Recovery
occurs within two years of the realization of such loss and (i) is the result of
an event that would have given rise to the  repurchase  of the related  Mortgage
Loan by the Seller pursuant to Section 2.02 or 2.03, or (ii) represents in whole
or part  funds  which the  applicable  Servicer  had  received  in  respect of a
Liquidated  Loan but failed to remit to the  Certificate  Account on or prior to
the Business Day  preceding  the  Distribution  Date  following  the  Applicable
Unscheduled  Principal  Receipt  Period  in which  the  Mortgage  Loan  became a
Liquidated  Loan,  such  Recovery  may,  at the sole  discretion  of the  Master
Servicer,  be treated as a repurchase or an Unscheduled  Principal  Receipt with
respect to such Mortgage Loan, as the case may be, the Realized Loss  previously
recognized may be reversed and treated for all subsequent  purposes as if it had
never occurred and the Master Servicer may make such  adjustments to interest or
principal distributions on the Certificates and to the principal balances of the
Certificates  as the  Master  Servicer  in its  good  faith  judgment  and  sole
discretion  deems  necessary  or  desirable  to  effectuate  the reversal of the
Realized  Loss  and  the  treatment  of such  amount  as a  repurchase  or as an
Unscheduled Principal Receipt, as the case may be; provided that such actions do
not  result in the  aggregate  distributions  made in  respect of each Class and
Subclass of Certificates  whose principal  balances were previously reduced as a
result of such Realized  Loss being less than such Class or Subclass  would have
received if such Recovery had been  deposited in the  Certificate  Account on or
prior  to the  Business  Day  preceding  the  Distribution  Date  following  the
Applicable  Unscheduled  Principal  Receipt  Period in which the  Mortgage  Loan
became a Liquidated Loan.

     (e) The interest  portion of Excess  Special  Hazard  Losses,  Excess Fraud
Losses  and  Excess  Bankruptcy  Losses  shall be  allocated  among  the Class A
Certificates,  Class M Certificates and Class B Certificates,  pro rata based on
the Class A Interest Accrual Amount, the Class M Interest Accrual Amount and the
Class B Interest  Accrual  Amount for the  related  Distribution  Date,  without
regard to any reduction  pursuant to this  sentence.  Any such loss allocated to
the Class A Certificates shall be allocated among the outstanding  Subclasses of
Class A Certificates based on their Class A Subclass Interest  Percentages.  Any
such loss  allocated to the Class B  Certificates  will be  allocated  among the
outstanding  Subclasses of Class B Certificates  based on their Class B Subclass
Interest Percentages.  In addition,  after the Class M Principal Balance and the
Class B Principal  Balance  have been reduced to zero,  the interest  portion of
Realized  Losses (other than Excess Special  Hazard Losses,  Excess Fraud Losses
and Excess Bankruptcy Losses) will be allocated among the outstanding Subclasses
of Class A Certificates based on their Class A Subclass Interest Percentages.

     (f) Realized Losses  allocated in accordance with this Section 4.02 will be
allocated on the  Determination  Date in the second month following the month in
which such loss was incurred with respect to the preceding Distribution Date.

Section 4.03. Paying Agent.

     (a) The Master Servicer hereby appoints the Trust  Administrator as initial
Paying  Agent to make  distributions  to  Certificateholders  and to  forward to
Certificateholders the periodic statements and the annual statements required by
Section 4.04 as agent of the Master Servicer.

     The Master Servicer may, at any time, remove or replace the Paying Agent.

     The Master  Servicer  shall  cause any  Paying  Agent that is not the Trust
Administrator to execute and deliver to the Trust Administrator an instrument in
which such Paying  Agent  agrees with the Trust  Administrator  that such Paying
Agent shall:

               (i) hold all amounts  remitted to it by the Master  Servicer  for
          distribution  to  Certificateholders  in  trust  for  the  benefit  of
          Certificateholders    until   such   amounts   are    distributed   to
          Certificateholders or otherwise disposed of as herein provided;

               (ii) give the Trust  Administrator  notice of any  default by the
          Master Servicer in remitting any required amount; and

               (iii) at any time  during the  continuance  of any such  default,
          upon the written request of the Trust Administrator,  forthwith pay to
          the  Trust  Administrator  all  amounts  held in trust by such  Paying
          Agent.

     (b) The Paying Agent shall establish and maintain a Payment Account,  which
shall be a separate trust account and an Eligible  Account,  in which the Master
Servicer shall cause to be deposited from funds in the  Certificate  Account or,
to the  extent  required  hereunder,  from its own funds (i) at or before  10:00
a.m.,  New York time, on the Business Day preceding each  Distribution  Date, by
wire transfer of  immediately  available  funds,  any Periodic  Advance for such
Distribution  Date,  pursuant to Section  3.03 and (ii) at or before 10:00 a.m.,
New York time, on the Business Day  preceding  each  Distribution  Date, by wire
transfer  of  immediately  available  funds,  (a) an  amount  equal  to the Pool
Distribution  Amount, (b) Net Foreclosure  Profits, if any, with respect to such
Distribution  Date and (c) the amount of any  recovery  in respect of a Realized
Loss. The Master  Servicer may cause the Paying Agent to invest the funds in the
Payment  Account.  Any such investment shall be in Eligible  Investments,  which
shall mature not later than the Business Day preceding the related  Distribution
Date   (unless  the  Eligible   Investments   are   obligations   of  the  Trust
Administrator,  in which case such Eligible  Investments  shall mature not later
than the  Distribution  Date),  and  shall not be sold or  disposed  of prior to
maturity. All income and gain realized from any such investment shall be for the
benefit of the Master  Servicer and shall be subject to its  withdrawal or order
from time to time.  The  amount of any  losses  incurred  in respect of any such
investments shall be deposited in the Payment Account by the Master Servicer out
of its own funds immediately as realized. The Paying Agent may withdraw from the
Payment  Account  any  amount  deposited  in the  Payment  Account  that was not
required to be deposited therein and may clear and terminate the Payment Account
pursuant to Section 9.01.

Section   4.04.   Statements   to   Certificateholders;   Report  to  the  Trust
Administrator and the Seller.

     Concurrently with each distribution pursuant to Section 4.01(e), the Master
Servicer,  or the Paying Agent appointed by the Master Servicer (upon receipt of
such statement from the Master Servicer), shall forward or cause to be forwarded
by mail to each  Holder of a  Certificate  and the  Seller a  statement  setting
forth:

               (i) the  amount of such  distribution  to Holders of each Class A
          Subclass allocable to principal,  separately identifying the aggregate
          amount of any Unscheduled Principal Receipts included therein;

               (ii) (a) the  amount  of such  distribution  to  Holders  of each
          Subclass of Class A Certificates allocable to interest, (b) the amount
          of the Current Class A Interest  Distribution Amount allocated to each
          Class A Subclass,  (c) any Class A Subclass Interest Shortfall Amounts
          arising with respect to such Distribution Date and any remaining Class
          A Subclass  Unpaid  Interest  Shortfall  with respect to each Subclass
          after  giving  effect  to such  distribution,  (d) the  amount  of any
          Non-Supported  Interest  Shortfall  allocated to each Class A Subclass
          for such  Distribution  Date and (e) the  interest  portion  of Excess
          Special  Hazard  Losses,  Excess  Fraud  Losses and Excess  Bankruptcy
          Losses allocated to each Subclass for such Distribution Date;

               (iii) the amount of such  distribution  to Holders of the Class M
          Certificates allocable to principal,  identifying the aggregate amount
          of any Unscheduled Principal Receipts included therein;

               (iv)(a) the amount of such distribution to Holders of the Class M
          Certificates  allocable  to  interest,  (b) the amount of the  Current
          Class  M  Interest  Distribution  Amount,  (c) any  Class  M  Interest
          Shortfall  Amount arising with respect to such  Distribution  Date and
          any remaining Class M Unpaid Interest Shortfall after giving effect to
          such  distribution,  (d)  the  amount  of any  Non-Supported  Interest
          Shortfall  allocated to the Class M Certificates for such Distribution
          Date and (e) the interest  portion of Excess  Special  Hazard  Losses,
          Excess  Fraud  Losses and Excess  Bankruptcy  Losses  allocated to the
          Class M Certificates for such Distribution Date;

               (v) the  amount of such  distribution  to Holders of each Class B
          Subclass allocable to principal,  separately identifying the aggregate
          amount of any Unscheduled Principal Receipts included therein;

               (vi) (a) the amount of such distribution to Holders of each Class
          B Subclass allocable to interest,  (b) the amount of the Current Class
          B Interest  Distribution Amount allocated to each Class B Subclass and
          the Pass-Through  Rate applicable to such  Distribution  Date, (c) any
          Class B Subclass  Interest  Shortfall  Amounts arising with respect to
          such  Distribution  Date and any  remaining  Class B  Subclass  Unpaid
          Interest  Shortfall with respect to each Class B Subclass after giving
          effect  to such  distribution,  (d) the  amount  of any  Non-Supported
          Interest  Shortfall  allocated  to each  Class  B  Subclass  for  such
          Distribution  Date,  and (e) the  interest  portion of Excess  Special
          Hazard  Losses,  Excess  Fraud  Losses  and Excess  Bankruptcy  Losses
          allocated to each Class B Subclass for such Distribution Date;

               (vii) the amount of any  Periodic  Advance by any  Servicer,  the
          Master Servicer or the Trust  Administrator  pursuant to the Servicing
          Agreements or this Agreement;

               (viii)  the  number  of  Mortgage  Loans  outstanding  as of  the
          preceding Determination Date;

               (ix)  the  Class  A  Principal  Balance,  the  Class  A  Subclass
          Principal Balance of each Subclass of Class A Certificates,  the Class
          M Principal  Balance,  the Class B  Principal  Balance and the Class B
          Subclass Principal Balance of each Subclass of Class B Certificates as
          of  the  following  Determination  Date  after  giving  effect  to the
          distributions of principal made, and the principal portion of Realized
          Losses, if any, allocated with respect to such Distribution Date;

               (x) the  Adjusted  Pool  Amount,  the  Adjusted  Pool  Amount (PO
          Portion),  the Pool Scheduled  Principal Balance of the Mortgage Loans
          for such  Distribution  Date  and the  aggregate  Scheduled  Principal
          Balance of the Discount Mortgage Loans for such Distribution Date;

               (xi) the aggregate  Scheduled  Principal Balances of the Mortgage
          Loans  serviced by Norwest  Mortgage and,  collectively,  by the Other
          Servicers as of such Distribution Date;

               (xii) the Class A Percentage for the following  Distribution Date
          (without  giving effect to  Unscheduled  Principal  Receipts  received
          after the  Applicable  Unscheduled  Principal  Receipt  Period for the
          current  Distribution Date which are applied by a Servicer during such
          Applicable Unscheduled Principal Receipt Period);

               (xiii)  the  Class A  Prepayment  Percentage  for  the  following
          Distribution  Date  (without  giving effect to  Unscheduled  Principal
          Receipts received after the Applicable  Unscheduled  Principal Receipt
          Period  for the  current  Distribution  Date  which are  applied  by a
          Servicer during such Applicable Unscheduled Principal Receipt Period);

               (xiv) the Class M Percentage for the following  Distribution Date
          (without  giving effect to  Unscheduled  Principal  Receipts  received
          after the  Applicable  Unscheduled  Principal  Receipt  Period for the
          current  Distribution Date which are applied by a Servicer during such
          Applicable Unscheduled Principal Receipt Period);

               (xv)  the  Class  M  Prepayment   Percentage  for  the  following
          Distribution  Date  (without  giving effect to  Unscheduled  Principal
          Receipts received after the Applicable  Unscheduled  Principal Receipt
          Period  for the  current  Distribution  Date  which are  applied  by a
          Servicer during such Applicable Unscheduled Principal Receipt Period);

               (xvi) the Class B-1,  Class B-2,  Class B-3,  Class B-4 and Class
          B-5  Percentages for the following  Distribution  Date (without giving
          effect to Unscheduled Principal Receipts received after the Applicable
          Unscheduled Principal Receipt Period for the current Distribution Date
          which are  applied by a Servicer  during such  Applicable  Unscheduled
          Principal Receipt Period);

               (xvii) the Class B-1,  Class B-2,  Class B-3, Class B-4 and Class
          B-5  Prepayment   Percentages  for  the  following  Distribution  Date
          (without  giving effect to  Unscheduled  Principal  Receipts  received
          after the  Applicable  Unscheduled  Principal  Receipt  Period for the
          current  Distribution Date which are applied by a Servicer during such
          Applicable Unscheduled Principal Receipt Period);

               (xviii) the number and aggregate  principal  balances of Mortgage
          Loans delinquent (a) one month, (b) two months and (c) three months or
          more;

               (xix) the number and aggregate principal balances of the Mortgage
          Loans in foreclosure as of the preceding Determination Date;

               (xx)  the  book  value  of  any  real  estate  acquired   through
          foreclosure or grant of a deed in lieu of foreclosure;

               (xxi) the amount of the  remaining  Special  Hazard Loss  Amount,
          Fraud  Loss  Amount  and  Bankruptcy  Loss  Amount  as of the close of
          business on such Distribution Date;

               (xxii) the  principal  and interest  portions of Realized  Losses
          allocated as of such Distribution Date and the amount of such Realized
          Losses constituting Excess Special Hazard Losses,  Excess Fraud Losses
          or Excess Bankruptcy Losses;

               (xxiii) the aggregate  amount of Bankruptcy  Losses  allocated to
          each Subclass of Class B Certificates  or,  following the reduction of
          the  Class  B  Principal  Balance  to  zero,  solely  to the  Class  M
          Certificates  in  accordance  with Section  4.02(a) since the Relevant
          Anniversary;

               (xxiv) the amount by which the Class B Subclass Principal Balance
          of each  Subclass  of Class B  Certificates  and the Class M Principal
          Balance has been reduced as a result of Realized  Losses  allocated as
          of such Distribution Date;

               (xxv) the unpaid  principal  balance of any  Mortgage  Loan as to
          which  the  Servicer  of such  Mortgage  Loan  has  determined  not to
          foreclose  because it believes the related  Mortgaged  Property may be
          contaminated  with  or  affected  by  hazardous  wastes  or  hazardous
          substances;

               (xxvi)  the  amount of the  aggregate  Servicing  Fees and Master
          Servicing Fees paid (and not previously  reported) with respect to the
          related  Distribution  Date  and the  amount  by which  the  aggregate
          Available  Master  Servicer  Compensation  has  been  reduced  by  the
          Prepayment Interest Shortfall for the related Distribution Date;

               (xxvii) in the case of the Class  A-WIO  Certificates,  the Class
          A-WIO  Notional  Amount  and Class  A-WIO  Pass-Through  Rate for such
          Distribution Date;

               (xxviii) the Class A-PO Deferred Amount, if any; and

               (xix) such other  customary  information  as the Master  Servicer
          deems necessary or desirable to enable  Certificateholders  to prepare
          their tax returns;

and shall  deliver a copy of each type of statement to the Trust  Administrator,
who shall provide copies thereof to Persons making written  request  therefor at
the Corporate Trust Office.

     In the case of information  furnished with respect to a Subclass of Class A
Certificates  pursuant  to  clauses  (i)  and  (ii)  above,  with  the  Class  M
Certificates  pursuant  to clauses  (iii) and (iv)  above and with  respect to a
Class B Subclass  pursuant to clauses (v) and (vi) above,  the amounts  shall be
expressed as a dollar amount per Class A, Class M or Class B Certificate  (other
than the Class A-WIO and Class A-R Certificates) with a $1,000 Denomination, and
as a dollar amount per Class A-R Certificate  with a $100  Denomination and as a
dollar amount per Class A-WIO Certificate with a 1% Denomination.

     Within a reasonable period of time after the end of each calendar year, the
Master Servicer shall furnish or cause to be furnished to each Person who at any
time  during the  calendar  year was the  Holder of a  Certificate  a  statement
containing  the  information  set forth in clauses (i) and (ii)(a)  above in the
case of a Class A Certificateholder,  the information set forth in clauses (iii)
and (iv)(a) above in the case of a Class M Certificateholder and the information
contained  in  clauses  (v)  and  (vi)(a)  above  in  the  case  of  a  Class  B
Certificateholder  aggregated  for  such  calendar  year or  applicable  portion
thereof during which such Person was a Certificateholder. Such obligation of the
Master  Servicer  shall be deemed  to have been  satisfied  to the  extent  that
substantially  comparable  information  shall be provided by the Master Servicer
pursuant to any requirements of the Code from time to time in force.

     Prior to the close of business on the third  Business  Day  preceding  each
Distribution  Date,  the Master  Servicer shall furnish a statement to the Trust
Administrator,  any  Paying  Agent  and  the  Seller  (the  information  in such
statement to be made available to  Certificateholders  by the Master Servicer on
written  request)  setting forth the Class A Subclass  Distribution  Amount with
respect to each Class A Subclass,  the Class M Distribution Amount and the Class
B Subclass  Distribution  Amount  with  respect to each  Class B  Subclass.  The
determination  by the Master  Servicer of such amounts shall,  in the absence of
obvious error, be presumptively  deemed to be correct for all purposes hereunder
and the Trust  Administrator  and the Paying Agent shall be protected in relying
upon the same without any independent check or verification.

     In addition to the reports  required  pursuant to this  Section  4.04,  the
Master  Servicer  shall make  available  upon  request  to each  Holder and each
proposed  transferee of a Class A-PO, Class A-WIO, Class B-3, Class B-4 or Class
B-5  Certificate  such  additional  information,  if any,  as may be required to
permit the proposed transfer to be effected pursuant to Rule 144A.

Section 4.05. Reports to Mortgagors and the Internal Revenue Service.

     The Master  Servicer  shall, in each year beginning after the Cut-Off Date,
make the reports of foreclosures and  abandonments of any Mortgaged  Property as
required by Code Section 6050J. In order to facilitate  this reporting  process,
the Master Servicer shall request that each Servicer,  on or before January 15th
of each year, shall provide to the Internal Revenue Service,  with copies to the
Master Servicer, reports relating to each instance occurring during the previous
calendar  year in which such  Servicer (i) on behalf of the Trust  Administrator
acquires  an  interest  in a Mortgaged  Property  through  foreclosure  or other
comparable  conversion  in full  or  partial  satisfaction  of a  Mortgage  Loan
serviced by such Servicer,  or (ii) knows or has reason to know that a Mortgaged
Property has been  abandoned.  Reports from the  Servicers  shall be in form and
substance sufficient to meet the reporting  requirements imposed by Code Section
6050J.  In  addition,  each  Servicer  shall  provide the Master  Servicer  with
sufficient  information  to allow the Master  Servicer  to, for each year ending
after the  Cut-Off  Date,  provide,  or cause to be  provided,  to the  Internal
Revenue  Service and the Mortgagors  such  information as is required under Code
Sections 6050H (regarding payment of interest) and 6050P (regarding cancellation
of indebtedness).

Section 4.06  Calculation  of Amounts;  Binding  Effect of  Interpretations  and
Actions of Master Servicer.

     The Master Servicer will compute the amount of all distributions to be made
on the Certificates and all losses to be allocated to the  Certificates.  In the
event that the Master  Servicer  concludes  that any  ambiguity  or  uncertainty
exists in any provisions of this Agreement  relating to distributions to be made
on the  Certificates  or the  allocation  of  losses  to the  Certificates,  the
interpretation  of such  provisions and any actions taken by the Master Servicer
in  good  faith  to  implement  such   interpretation   shall  be  binding  upon
Certificateholders.


<PAGE>


ARTICLE V

THE CERTIFICATES

Section 5.01.     The Certificates.

     (a) The Class A, Class M and Class B  Certificates  shall be issued only in
minimum  Denominations  of a Single  Certificate  and,  except for the Class A-R
Certificate,  integral  multiples of $1,000 in excess  thereof or 1%  Percentage
Interest in the case of the Class A-WIO Certificates (except, if necessary,  for
one  Certificate of each Class or Subclass (other than the Class A-WIO and Class
A-R  Certificates)  that evidences one Single  Certificate  plus such additional
principal  portion as is required in order for all Certificates of such Class or
Subclass to equal the aggregate  Original  Class A Subclass  Principal  Balance,
Original  Class M Principal  Balance or the aggregate  Original Class B Subclass
Principal  Balance of such Class or Subclass,  as the case may be), and shall be
substantially  in the respective forms set forth as Exhibits A-1, A-2, A-3, A-4,
A-5, A-6, A-7, A-8, A-PO, A-WIO, A-R, B-1, B-2, B-3, B-4, B-5, C, and D (reverse
side of  Certificates)  hereto.  On  original  issue the  Certificates  shall be
executed and  delivered by the Trust  Administrator  to or upon the order of the
Seller upon receipt by the Trust Administrator or the Custodian of the documents
specified in Section 2.01.  The  aggregate  principal  portion  evidenced by the
Class  A,  Class M and  Class B  Certificates  shall  be the sum of the  amounts
specifically set forth in the respective Certificates. The Certificates shall be
executed by manual or facsimile  signature on behalf of the Trust  Administrator
by any Responsible Officer thereof. Certificates bearing the manual or facsimile
signatures of individuals  who were at any time the proper officers of the Trust
Administrator  shall  bind the  Trust  Administrator  notwithstanding  that such
individuals  or any of them  have  ceased  to hold  such  offices  prior  to the
authentication and delivery of such Certificates or did not hold such offices at
the date of such  Certificates.  No Certificate shall be entitled to any benefit
under this Agreement, or be valid for any purpose, unless manually countersigned
by a Responsible Officer of the Trust Administrator,  or unless there appears on
such Certificate a certificate of authentication  executed by the Authenticating
Agent by manual  signature,  and such  countersignature  or  certificate  upon a
Certificate  shall be  conclusive  evidence,  and the only  evidence,  that such
Certificate  has  been  duly   authenticated   and  delivered   hereunder.   All
Certificates shall be dated the date of their authentication.

     Until such time as Definitive  Certificates  are issued pursuant to Section
5.07, each Book-Entry Certificate shall bear the following legend:

     "Unless this  certificate is presented by an authorized  representative  of
[the Clearing  Agency] to the Trust  Administrator or its agent for registration
of transfer,  exchange or payment,  and any certificate  issued is registered in
the  name  of [the  Clearing  Agency]  or such  other  name as  requested  by an
authorized  representative  of [the Clearing  Agency] and any payment is made to
[the Clearing  Agency],  any  transfer,  pledge or other use hereof for value or
otherwise by or to any person is wrongful  since the  registered  owner  hereof,
[the Clearing Agency], has an interest herein."

     (b) Upon original issuance, the Book-Entry  Certificates shall be issued in
the  form  of one or  more  typewritten  certificates,  to be  delivered  to The
Depository Trust Company,  the initial Clearing Agency, by, or on behalf of, the
Seller.  Such  Certificates  shall  initially be registered  in the  Certificate
Register  in the name of the  nominee of the  initial  Clearing  Agency,  and no
Beneficial  Owner  will  receive  a  definitive  certificate  representing  such
Beneficial Owner's interest in the Book-Entry  Certificates,  except as provided
in Section 5.07.  Unless and until  definitive,  fully  registered  certificates
("Definitive  Certificates")  have been issued to Beneficial  Owners pursuant to
Section 5.07:

               (i) the provisions of this Section 5.01(b) shall be in full force
          and effect;

               (ii) the Seller, the Master Servicer,  the Certificate  Registrar
          and the Trust  Administrator may deal with the Clearing Agency for all
          purposes  (including  the making of  distributions  on the  Book-Entry
          Certificates  and the taking of actions by the  Holders of  Book-Entry
          Certificates)  as the  authorized  representative  of  the  Beneficial
          Owners;

               (iii) to the extent that the  provisions of this Section  5.01(b)
          conflict with any other  provisions of this Agreement,  the provisions
          of this Section 5.01(b) shall control;

               (iv) the rights of  Beneficial  Owners  shall be  exercised  only
          through the Clearing Agency and shall be limited to those  established
          by law, the rules,  regulations  and procedures of the Clearing Agency
          and agreements  between such Beneficial Owners and the Clearing Agency
          and/or the Clearing  Agency  Participants,  and all references in this
          Agreement to actions by Certificateholders  shall, with respect to the
          Book-Entry Certificates, refer to actions taken by the Clearing Agency
          upon  instructions  from the  Clearing  Agency  Participants,  and all
          references in this Agreement to  distributions,  notices,  reports and
          statements to Certificateholders shall, with respect to the Book-Entry
          Certificates, refer to distributions,  notices, reports and statements
          to the Clearing  Agency or its nominee,  as  registered  holder of the
          Book-Entry  Certificates,  as the case  may be,  for  distribution  to
          Beneficial  Owners in accordance  with the  procedures of the Clearing
          Agency; and

               (v) the initial  Clearing Agency will make  book-entry  transfers
          among the  Clearing  Agency  Participants  and  receive  and  transmit
          distributions  of principal  and interest on the  Certificates  to the
          Clearing Agency Participants, for distribution by such Clearing Agency
          Participants to the Beneficial Owners or their nominees.

     For purposes of any  provision of this  Agreement  requiring or  permitting
actions  with the  consent of, or at the  direction  of,  Holders of  Book-Entry
Certificates  evidencing  specified Voting Interests,  such direction or consent
shall be given by  Beneficial  Owners  having the  requisite  Voting  Interests,
acting through the Clearing Agency.

     Unless and until  Definitive  Certificates  have been issued to  Beneficial
Owners pursuant to Section 5.07, copies of the reports or statements referred to
in Section 4.04 shall be available to Beneficial  Owners upon written request to
the Trust Administrator at the Corporate Trust Office.

Section 5.02. Registration of Transfer and Exchange of Certificates.

     (a) The Trust Administrator shall cause to be kept at one of the offices or
agencies to be maintained in  accordance  with the  provisions of Section 5.06 a
Certificate Register in which, subject to such reasonable  regulations as it may
prescribe,  the  Trust  Administrator  shall  provide  for the  registration  of
Certificates  and of transfers and exchanges of Certificates as herein provided.
The Trust Administrator shall act as, or shall appoint, a Certificate  Registrar
for the purpose of  registering  Certificates  and  transfers  and  exchanges of
Certificates as herein provided.

     Upon  surrender  for  registration  of transfer of any  Certificate  at any
office or agency  maintained  for such  purpose  pursuant  to Section  5.06 (and
subject to the  provisions of this Section 5.02) the Trust  Administrator  shall
execute,  and shall date,  authenticate  (or cause the  Authenticating  Agent to
authenticate)  and  deliver,  in  the  name  of  the  designated  transferee  or
transferees,  one or more new Certificates of a like aggregate principal portion
or Percentage Interest and of the same Class or Subclass.

     At the option of the Certificateholders,  Certificates may be exchanged for
other  Certificates of authorized  Denominations  of a like aggregate  principal
portion or Percentage  Interest and of the same Class or Subclass upon surrender
of the  Certificates to be exchanged at any such office or agency.  Whenever any
Certificates  are so surrendered  for exchange,  the Trust  Administrator  shall
execute,  and shall date,  authenticate  (or cause the  Authenticating  Agent to
authenticate) and deliver, the Certificates which the  Certificateholder  making
the exchange is entitled to receive.  Every Certificate presented or surrendered
for transfer or exchange shall (if so required by the  Certificate  Registrar or
the Trust  Administrator)  be duly endorsed by, or be  accompanied  by a written
instrument of transfer in form satisfactory to the Certificate  Registrar,  duly
executed by the Holder thereof or his attorney duly authorized in writing.

     No  service   charge  shall  be  made  for  any  transfer  or  exchange  of
Certificates,  but the Trust  Administrator  or the  Certificate  Registrar  may
require payment of a sum sufficient to cover any tax or governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

     All Certificates surrendered for transfer and exchange shall be canceled by
the Certificate  Registrar,  the Trust Administrator or the Authenticating Agent
in accordance with their standard procedures.

     (b) No transfer of a Class A-PO, Class A-WIO, Class B-3, Class B-4 or Class
B-5  Certificate  shall be made (other  than the  transfer of the Class A-PO and
Class A-WIO  Certificates  to an  affiliate  of the Seller on the Closing  Date)
unless the registration  requirements of the Securities Act of 1933, as amended,
and any applicable  State securities laws are complied with, or such transfer is
exempt from the registration  requirements under said Act and laws. In the event
that a transfer is to be made in  reliance  upon an  exemption  from said Act or
laws,  (i) unless such  transfer  is made in  reliance  on Rule 144A,  the Trust
Administrator  or the Seller  may, if such  transfer is to be made within  three
years after the later of (i) the date of the  initial  sale of  Certificates  or
(ii) the last date on which the Seller or any affiliate  thereof was a Holder of
the Certificates proposed to be transferred,  require a Class A-PO, Class A-WIO,
Class B-3, Class B-4 or Class B-5 Certificateholder to deliver a written Opinion
of Counsel  acceptable  to and in form and substance  satisfactory  to the Trust
Administrator  and the  Seller,  to the effect  that such  transfer  may be made
pursuant to an  exemption,  describing  the  applicable  exemption and the basis
therefor, from said Act and laws or is being made pursuant to said Act and laws,
which Opinion of Counsel shall not be an expense of the Trust Administrator, the
Trustee,  the Seller or the Master  Servicer,  and (ii) the Trust  Administrator
shall  require  the  transferee  (other  than of a Class  A-PO and  Class  A-WIO
Certificate  where  such  transferee  is an  affiliate  of the  Seller  and such
transfer is made on the  Closing  Date) to execute an  investment  letter in the
form of Exhibit J hereto  certifying  to the Seller and the Trust  Administrator
the facts  surrounding such transfer,  which  investment  letter shall not be an
expense  of the Trust  Administrator,  the  Trustee,  the  Seller or the  Master
Servicer. The Holder of a Class A-PO, Class A-WIO, Class B-3, Class B-4 or Class
B-5 Certificate  desiring to effect such transfer  shall,  and does hereby agree
to,  indemnify  the Trust  Administrator,  the Trustee,  the Seller,  the Master
Servicer  and any  Paying  Agent  acting on behalf of the  Trustee  against  any
liability  that may  result if the  transfer  is not so exempt or is not made in
accordance  with such  federal and state laws.  Neither the Seller nor the Trust
Administrator  is under an obligation  to register the Class A-PO,  Class A-WIO,
Class  B-3,  Class B-4 or Class  B-5  Certificates  under  said Act or any other
securities law.

     (c) No transfer of a Class A-PO, Class A-WIO  Certificate,  or a Class M or
Class B Certificate shall be made (other than the transfer of the Class A-PO and
Class A-WIO  Certificates  to an  affiliate  of the Seller on the Closing  Date)
unless the Trust Administrator  shall have received (i) a representation  letter
from the  transferee  in the form of  Exhibit J  hereto,  in the case of a Class
A-PO, Class A-WIO, Class B-3, Class B-4 or Class B-5 Certificate, or in the form
of  Exhibit  K  hereto,  in the  case of a  Class  M,  Class  B-1 or  Class  B-2
Certificate,  to the effect that either (a) such  transferee  is not an employee
benefit plan or other retirement arrangement subject to Title I of ERISA or Code
Section  4975,  or a  governmental  plan,  as defined in Section 3(32) of ERISA,
subject  to any  federal,  state  or local  law  ("Similar  Law")  which is to a
material  extent  similar  to the  foregoing  provisions  of  ERISA  or the Code
(collectively,  a "Plan"),  and is not a person acting on behalf of or using the
assets of any such Plan, which representation  letter shall not be an expense of
the Trust  Administrator,  the Trustee, the Seller or the Master Servicer or (b)
(other  than with  respect to a Class A-PO or Class A-WIO  Certificate)  if such
transferee  is an  insurance  company,  the source of funds used to purchase the
Class M or Class B Certificate  is an "insurance  company  general  account" (as
such term is defined in Section V(e) of Prohibited  Transaction  Class Exemption
95-60 ("PTE  95-60"),  60 Fed. Reg.  35925 (July 12, 1995)) and there is no Plan
with  respect  to which  the  amount  of such  general  account's  reserves  and
liabilities for the contract(s)  held by or on behalf of such Plan and all other
Plans  maintained  by the same  employer  (or  affiliate  thereof  as defined in
Section V(a)(1) of PTE 95-60) or by the same employee  organization  exceeds 10%
of the total of all reserves and  liabilities  of such general  account (as such
amounts  are  determined  under  Section  I(a)  of PTE  95-60)  at the  date  of
acquisition or (ii) in the case of any such Class A-PO, Class A-WIO,  Class M or
Class B  Certificate  presented  for  registration  in the name of a Plan,  or a
trustee of any such Plan,  (A) an Opinion of Counsel  satisfactory  to the Trust
Administrator  and the Seller to the effect that the purchase or holding of such
Class A-PO,  Class A-WIO,  Class M or Class B Certificate will not result in the
assets of the Trust Estate  being deemed to be "plan  assets" and subject to the
prohibited transaction provisions of ERISA, the Code or Similar Law and will not
subject the Trust Administrator,  the Trustee, the Seller or the Master Servicer
to any  obligation  in addition to those  undertaken  in this  Agreement,  which
Opinion of  Counsel  shall not be an  expense  of the Trust  Administrator,  the
Trustee,  the  Seller or the Master  Servicer  and (B) such  other  opinions  of
counsel,  officer's  certificates  and  agreements  as the  Seller or the Master
Servicer  may  require in  connection  with such  transfer,  which  opinions  of
counsel,  officers'  certificates  and agreements shall not be an expense of the
Trust Administrator,  the Trustee, the Seller or the Master Servicer.  The Class
A-PO,  Class  A-WIO,  Class  M and  Class B  Certificates  shall  bear a  legend
referring to the foregoing restrictions contained in this paragraph.

     (d) No legal or beneficial  interest in all or any portion of the Class A-R
Certificate  may  be  transferred  directly  or  indirectly  to a  "disqualified
organization"  within the meaning of Code  Section  860E(e)(5)  or an agent of a
disqualified organization (including a broker, nominee, or middleman), to a Plan
or a Person  acting on behalf of or investing the assets of a Plan (such Plan or
Person,  an  "ERISA  Prohibited  Holder")  or  to  an  individual,  corporation,
partnership or other person unless such transferee (i) is not a Non-U.S.  Person
or (ii) is a Non-U.S.  Person that holds the Class A-R Certificate in connection
with the  conduct  of a trade or  business  within  the  United  States  and has
furnished the transferor and the Trust  Administrator with an effective Internal
Revenue  Service Form 4224 or (iii) is a Non-U.S.  Person that has  delivered to
both the  transferor  and the Trust  Administrator  an opinion  of a  nationally
recognized  tax  counsel  to the  effect  that the  transfer  of the  Class  A-R
Certificate  to it is in accordance  with the  requirements  of the Code and the
regulations  promulgated  thereunder  and that  such  transfer  of the Class A-R
Certificate  will not be  disregarded  for federal income tax purposes (any such
person who is not covered by clauses (i), (ii) or (iii) above being  referred to
herein as a "Non-permitted  Foreign  Holder"),  and any such purported  transfer
shall be void and have no effect. The Trust Administrator shall not execute, and
shall not authenticate (or cause the  Authenticating  Agent to authenticate) and
deliver,  a new Class A-R  Certificate in connection with any such transfer to a
disqualified  organization  or agent  thereof  (including  a broker,  nominee or
middleman),  an ERISA Prohibited Holder or a Non-permitted  Foreign Holder,  and
neither the  Certificate  Registrar nor the Trust  Administrator  shall accept a
surrender for transfer or registration of transfer, or register the transfer of,
the Class A-R  Certificate,  unless the  transferor  shall have  provided to the
Trust Administrator an affidavit,  substantially in the form attached as Exhibit
H hereto,  signed by the  transferee,  to the effect that the  transferee is not
such a disqualified  organization,  an agent  (including a broker,  nominee,  or
middleman)  for any  entity  as to  which  the  transferee  has not  received  a
substantially  similar affidavit,  an ERISA Prohibited Holder or a Non-permitted
Foreign  Holder,  which affidavit shall contain the consent of the transferee to
any such  amendments of this Agreement as may be required to further  effectuate
the  foregoing  restrictions  on  transfer  of  the  Class  A-R  Certificate  to
disqualified  organizations,  ERISA Prohibited Holders or Non-permitted  Foreign
Holders.  Such affidavit shall also contain the statement of the transferee that
(i) the  transferee  has  historically  paid its debts as they have come due and
intends to do so in the  future,  (ii) the  transferee  understands  that it may
incur  liabilities in excess of cash flows  generated by the residual  interest,
(iii) the transferee  intends to pay taxes  associated with holding the residual
interest as they become due and (iv) the transferee  will not transfer the Class
A-R Certificate to any Person who does not provide an affidavit substantially in
the form attached as Exhibit H hereto.

     The  affidavit  described in the  preceding  paragraph,  if not executed in
connection  with the  initial  issuance of the Class A-R  Certificate,  shall be
accompanied  by a written  statement  in the form  attached as Exhibit I hereto,
signed by the transferor, to the effect that as of the time of the transfer, the
transferor  has no  actual  knowledge  that  the  transferee  is a  disqualified
organization,  ERISA Prohibited Holder or Non-permitted  Foreign Holder, and has
no knowledge or reason to know that the statements  made by the transferee  with
respect to clauses (i) and (iii) of the last sentence of the preceding paragraph
are not true.  The Class A-R  Certificate  shall bear a legend  referring to the
foregoing restrictions contained in this paragraph and the preceding paragraph.

     Upon notice to the Master Servicer that any legal or beneficial interest in
any  portion of the Class A-R  Certificate  has been  transferred,  directly  or
indirectly, to a disqualified organization or agent thereof (including a broker,
nominee, or middleman) in contravention of the foregoing restrictions,  (i) such
transferee  shall be deemed to hold the Class A-R  Certificate  in  constructive
trust for the last  transferor who was not a disqualified  organization or agent
thereof,  and such  transferor  shall be restored as the owner of such Class A-R
Certificate as completely as if such transfer had never occurred,  provided that
the Master Servicer may, but is not required to, recover any distributions  made
to such  transferee with respect to Class A-R  Certificate,  and (ii) the Master
Servicer agrees to furnish to the Internal Revenue Service and to any transferor
of the  Class A-R  Certificate  or such  agent  (within  60 days of the  request
therefor  by  the  transferor  or  agent)  such  information  necessary  to  the
application  of Code Section  860E(e) as may be required by the Code,  including
but not limited to the present value of the total anticipated  excess inclusions
with respect to the Class A-R Certificate (or portion thereof) for periods after
such transfer.  At the election of the Master  Servicer,  the cost to the Master
Servicer of computing  and  furnishing  such  information  may be charged to the
transferor or such agent referred to above;  however,  the Master Servicer shall
in no event be excused from furnishing such information.

Section 5.03. Mutilated, Destroyed, Lost or Stolen Certificates.

     If (i) any mutilated  Certificate is surrendered to the Trust Administrator
or the  Authenticating  Agent, or the Trust  Administrator or the Authenticating
Agent receives evidence to its satisfaction of the destruction, loss or theft of
any Certificate,  and (ii) there is delivered to the Trust  Administrator or the
Authenticating  Agent such  security or  indemnity as may be required by them to
hold  each of them  harmless,  then,  in the  absence  of  notice  to the  Trust
Administrator  or the  Authenticating  Agent  that  such  Certificate  has  been
acquired by a bona fide  purchaser,  the Trust  Administrator  shall execute and
authenticate (or cause the Authenticating Agent to authenticate) and deliver, in
exchange  for or in lieu  of any  such  mutilated,  destroyed,  lost  or  stolen
Certificate, a new Certificate of like tenor and principal portion or Percentage
Interest  and of the  same  Class or  Subclass.  Upon  the  issuance  of any new
Certificate  under this  Section,  the Trust  Administrator  or the  Certificate
Registrar may require the payment of a sum  sufficient to cover any tax or other
governmental  charge  that may be  imposed  in  relation  thereto  and any other
expense  (including  the fees and  expenses  of the Trust  Administrator  or the
Authenticating Agent) in connection therewith.  Any duplicate Certificate issued
pursuant to this Section shall constitute complete and indefeasible  evidence of
ownership in the Trust Estate, as if originally issued, whether or not the lost,
stolen, or destroyed Certificate shall be found at any time.

Section 5.04. Persons Deemed Owners.

     Prior  to  the  due  presentation  of a  Certificate  for  registration  of
transfer, the Seller, the Master Servicer, the Trustee, the Trust Administrator,
the Certificate Registrar and any agent of the Seller, the Master Servicer,  the
Trustee,  the Trust  Administrator  or the  Certificate  Registrar may treat the
Person  in  whose  name  any  Certificate  is  registered  as the  owner of such
Certificate for the purpose of receiving distributions pursuant to Section 4.01,
and for all other  purposes  whatsoever,  and  neither  the  Seller,  the Master
Servicer,  the Trustee, the Trust Administrator,  the Certificate  Registrar nor
any  agent  of  the  Seller,  the  Master  Servicer,   the  Trustee,  the  Trust
Administrator,  or the Certificate  Registrar shall be affected by notice to the
contrary.

Section 5.05. Access to List of Certificateholders' Names and Addresses.

     (a) If the Trust Administrator is not acting as Certificate Registrar,  the
Certificate  Registrar  shall  furnish  or cause to be  furnished  to the  Trust
Administrator,  within 15 days after receipt by the  Certificate  Registrar of a
request by the Trust Administrator in writing, a list, in such form as the Trust
Administrator  may  reasonably  require,  of  the  names  and  addresses  of the
Certificateholders of each Class or Subclass as of the most recent Record Date.

     (b)  If  five  or  more  Certificateholders  (hereinafter  referred  to  as
"applicants") apply in writing to the Trust Administrator,  and such application
states that the applicants  desire to communicate with other  Certificateholders
with respect to their rights under this Agreement or under the  Certificates and
is accompanied by a copy of the communication  which such applicants  propose to
transmit,  then  the  Trust  Administrator  shall,  within  five  Business  Days
following the receipt of such application,  afford such applicants access during
normal business hours to the most recent list of Certificateholders  held by the
Trust Administrator. If such a list is as of the date more than 90 days prior to
the date of receipt of such applicants'  request and the Trust  Administrator is
not the Certificate  Registrar,  the Trust  Administrator shall promptly request
from the  Certificate  Registrar a current  list as provided  in  paragraph  (a)
hereof,  and shall  afford such  applicants  access to such list  promptly  upon
receipt.

     (c) Every Certificateholder, by receiving and holding a Certificate, agrees
with the Seller,  the Master  Servicer,  the  Certificate  Registrar,  the Trust
Administrator and the Trustee that neither the Seller, the Master Servicer,  the
Certificate  Registrar,  the Trust  Administrator  nor the Trustee shall be held
accountable by reason of the disclosure of any such information as to the names,
addresses  and  Percentage  Interests  of  the   Certificateholders   hereunder,
regardless of the source from which such information was delivered.

Section 5.06. Maintenance of Office or Agency.

     The Trust Administrator will maintain,  at its expense, an office or agency
where  Certificates  may be surrendered for registration of transfer or exchange
and where notices and demands to or upon the Certificate Registrar in respect of
the  Certificates  and this  Agreement  may be served.  The Trust  Administrator
initially  designates  the Corporate  Trust Office and the  principal  corporate
trust office of the  Authenticating  Agent,  if any, as its offices and agencies
for said purposes.

Section 5.07. Definitive Certificates.

     If (i)(A) the Master Servicer  advises the Trust  Administrator  in writing
that the Clearing  Agency is no longer willing or able properly to discharge its
responsibilities as depository with respect to the Book-Entry Certificates,  and
(B) the Master  Servicer  is unable to locate a  qualified  successor,  (ii) the
Master Servicer, at its option,  advises the Trust Administrator in writing that
it elects to terminate  the  book-entry  system  through the Clearing  Agency or
(iii) after the occurrence of dismissal or  resignation of the Master  Servicer,
Beneficial Owners  representing  aggregate Voting Interests of not less than 51%
of the aggregate  Voting  Interests of each  outstanding  Subclass of Book-Entry
Certificates  advise the Trust  Administrator  through the  Clearing  Agency and
Clearing Agency  Participants  in writing that the  continuation of a book-entry
system  through the  Clearing  Agency is no longer in the best  interests of the
Beneficial Owners, the Trust  Administrator  shall notify the Beneficial Owners,
through the  Clearing  Agency,  of the  occurrence  of any such event and of the
availability  of Definitive  Certificates  to Beneficial  Owners  requesting the
same.  Upon surrender to the Trust  Administrator  by the Clearing Agency of the
Certificates  held of  record  by its  nominee,  accompanied  by  reregistration
instructions and directions to execute and  authenticate  new Certificates  from
the Master  Servicer,  the Trust  Administrator  shall execute and  authenticate
Definitive  Certificates for delivery at its Corporate Trust Office.  The Master
Servicer  shall  arrange  for,  and will  bear all costs of,  the  printing  and
issuance  of such  Definitive  Certificates.  Neither  the  Seller,  the  Master
Servicer,  the Trustee nor the Trust Administrator shall be liable for any delay
in delivery of such  instructions  by the Clearing  Agency and may  conclusively
rely on, and shall be protected in relying on, such instructions.

Section 5.08. Notices to Clearing Agency.

     Whenever  notice  or  other  communication  to the  Holders  of  Book-Entry
Certificates  is  required  under this  Agreement,  unless and until  Definitive
Certificates  shall have been issued to  Beneficial  Owners  pursuant to Section
5.07,  the Trust  Administrator  shall give all such notices and  communications
specified  herein  to be given to  Holders  of  Book-Entry  Certificates  to the
Clearing Agency.


<PAGE>

ARTICLE VI

THE SELLER AND THE MASTER SERVICER

Section 6.01. Liability of the Seller and the Master Servicer.

     The  Seller  and the Master  Servicer  shall  each be liable in  accordance
herewith  only to the  extent of the  obligations  specifically  imposed by this
Agreement and undertaken hereunder by the Seller and the Master Servicer.

Section 6.02. Merger or Consolidation of the Seller or the Master Servicer.

     Subject to the following paragraph, the Seller and the Master Servicer each
will keep in full effect its  existence,  rights and franchises as a corporation
under the laws of the  jurisdiction  of its  incorporation,  and will obtain and
preserve  its  qualification  to do  business as a foreign  corporation  in each
jurisdiction in which such qualification is or shall be necessary to protect the
validity and  enforceability  of this Agreement,  the Certificates or any of the
Mortgage Loans and to perform its respective duties under this Agreement.

     The Seller or the Master  Servicer  may be merged or  consolidated  with or
into any  Person,  or  transfer  all or  substantially  all of its assets to any
Person,  in which case any Person  resulting from any merger or consolidation to
which the Seller or Master Servicer shall be a party,  or any Person  succeeding
to the business of the Seller or Master Servicer,  shall be the successor of the
Seller or Master  Servicer  hereunder,  without the  execution  or filing of any
paper or any  further  act on the part of any of the  parties  hereto,  anything
herein to the contrary notwithstanding;  provided, however, that, in the case of
the Master  Servicer,  any such successor or resulting Person shall be qualified
to service mortgage loans for FNMA or FHLMC.

Section  6.03.  Limitation on Liability of the Seller,  the Master  Servicer and
Others.

     Neither the Seller nor the Master Servicer nor any subcontractor nor any of
the partners,  directors,  officers, employees or agents of any of them shall be
under any liability to the Trust Estate or the  Certificateholders  and all such
Persons shall be held harmless for any action taken or for  refraining  from the
taking of any action in good faith pursuant to this Agreement,  or for errors in
judgment;  provided,  however,  that this  provision  shall not protect any such
Person  against  any breach of  warranties  or  representations  made  herein or
against  any  liability  which would  otherwise  be imposed by reason of willful
misfeasance,  bad faith or gross  negligence in the  performance of duties or by
reason of reckless  disregard of obligations and duties  hereunder.  The Seller,
the Master Servicer,  any  subcontractor,  and any partner,  director,  officer,
employee  or agent of any of them shall be entitled  to  indemnification  by the
Trust Estate and will be held  harmless  against any loss,  liability or expense
incurred in connection  with any legal action  relating to this Agreement or the
Certificates,  other than any loss,  liability or expense  incurred by reason of
willful misfeasance,  bad faith or gross negligence in the performance of his or
its  duties  hereunder  or by  reason  of  reckless  disregard  of  his  or  its
obligations and duties hereunder. The Seller, the Master Servicer and any of the
directors, officers, employees or agents of either may rely in good faith on any
document of any kind which,  prima facie, is properly  executed and submitted by
any Person respecting any matters arising hereunder.  Neither the Seller nor the
Master Servicer shall be under any obligation to appear in,  prosecute or defend
any legal action  unless such action is related to its  respective  duties under
this  Agreement  and which in its opinion  does not involve it in any expense or
liability;  provided, however, that the Seller or the Master Servicer may in its
discretion  undertake  any such action which it may deem  necessary or desirable
with respect to this  Agreement and the rights and duties of the parties  hereto
and the interests of the Certificateholders  hereunder if the Certificateholders
offer to the  Seller  or the  Master  Servicer,  as the case may be,  reasonable
security or indemnity  against the costs,  expenses and liabilities which may be
incurred therein or thereby. In such event, the legal expenses and costs of such
action  and any  liability  resulting  therefrom  shall be  expenses,  costs and
liabilities of the Trust Estate,  and the Seller or the Master Servicer shall be
entitled to be  reimbursed  therefor out of the  Certificate  Account,  and such
amounts shall,  on the following  Distribution  Date or  Distribution  Dates, be
allocated  in  reduction  of  distributions  on the Class A, Class M and Class B
Certificates  in the same manner as Realized  Losses are  allocated  pursuant to
Section 4.02(a).

Section 6.04. Resignation of the Master Servicer.

     The Master Servicer shall not resign from the obligations and duties hereby
imposed on it except upon  determination that its duties hereunder are no longer
permissible  under  applicable  law or are in  material  conflict  by  reason of
applicable  law  with  any  other   activities   carried  on  by  it.  Any  such
determination  permitting  the  resignation  of the  Master  Servicer  shall  be
evidenced  by an Opinion of Counsel to such effect  delivered to the Trustee and
the Trust  Administrator.  No such resignation  shall become effective until the
Trustee,  the Trust Administrator or a successor servicer shall have assumed the
Master  Servicer's   responsibilities,   duties,   liabilities  and  obligations
hereunder.

Section 6.05. Compensation to the Master Servicer.

     The Master Servicer shall be entitled to receive a monthly fee equal to the
Master  Servicing  Fee,  as  compensation  for  services  rendered by the Master
Servicer under this Agreement.  The Master Servicer also will be entitled to any
late reporting fees paid by a Servicer  pursuant to its Servicing  Agreement and
any  investment  income  on funds  on  deposit  in the  Certificate  Account  as
additional compensation.

Section 6.06. Assignment or Delegation of Duties by Master Servicer.

     The  Master  Servicer  shall not  assign  or  transfer  any of its  rights,
benefits or privileges under this Agreement to any other Person,  or delegate to
or subcontract  with, or authorize or appoint any other Person to perform any of
the duties,  covenants or  obligations  to be  performed by the Master  Servicer
without the prior  written  consent of the Trustee and the Trust  Administrator,
and any agreement,  instrument or act purporting to effect any such  assignment,
transfer,   delegation  or  appointment  shall  be  void.   Notwithstanding  the
foregoing,  the Master  Servicer  shall have the right without the prior written
consent of the Trustee or the Trust  Administrator  (i) to assign its rights and
delegate its duties and obligations hereunder;  provided,  however, that (a) the
purchaser or transferee  accepting such assignment or delegation is qualified to
service mortgage loans for FNMA or FHLMC, is satisfactory to the Trustee and the
Trust Administrator,  in the exercise of its reasonable  judgment,  and executes
and delivers to the Trustee and the Trust  Administrator  an agreement,  in form
and   substance   reasonably   satisfactory   to  the   Trustee  and  the  Trust
Administrator,  which  contains an assumption by such purchaser or transferee of
the due and punctual  performance  and observance of each covenant and condition
to be performed or observed by the Master Servicer  hereunder from and after the
date of such agreement;  and (b) each  applicable  Rating Agency's rating of any
Certificates in effect immediately prior to such assignment, sale or transfer is
not  reasonably  likely to be qualified,  downgraded or withdrawn as a result of
such assignment, sale or transfer and the Certificates are not reasonably likely
to be placed on credit  review  status by any such  Rating  Agency;  and (ii) to
delegate to, subcontract with, authorize,  or appoint an affiliate of the Master
Servicer to perform and carry out any duties,  covenants  or  obligations  to be
performed and carried out by the Master Servicer under this Agreement and hereby
agrees so to delegate, subcontract,  authorize or appoint to an affiliate of the
Master Servicer any duties, covenants or obligations to be performed and carried
out by the  Master  Servicer  to the  extent  that  such  duties,  covenants  or
obligations  are to be  performed  in any state or  states  in which the  Master
Servicer is not authorized to do business as a foreign  corporation but in which
the  affiliate  is so  authorized.  In no case,  however,  shall  any  permitted
assignment  and delegation  relieve the Master  Servicer of any liability to the
Trustee, the Trust Administrator or the Seller under this Agreement, incurred by
it prior to the time that the conditions contained in clause (i) above are met.

Section 6.07.  Indemnification  of Trustee,  Trust  Administrator  and Seller by
Master Servicer.

     The Master  Servicer  shall  indemnify and hold  harmless the Trustee,  the
Trust  Administrator  and the Seller and any director,  officer or agent thereof
against any loss, liability or expense,  including  reasonable  attorney's fees,
arising out of, in connection with or incurred by reason of willful misfeasance,
bad faith or  negligence  in the  performance  of duties of the Master  Servicer
under this Agreement or by reason of reckless  disregard of its  obligations and
duties under this  Agreement.  Any payment  pursuant to this Section made by the
Master Servicer to the Trustee,  the Trust  Administrator or the Seller shall be
from such entity's own funds, without reimbursement  therefor. The provisions of
this Section 6.07 shall survive the termination of this Agreement.


<PAGE>

ARTICLE VII

DEFAULT

Section 7.01. Events of Default.

     In case  one or more of the  following  Events  of  Default  by the  Master
Servicer shall occur and be continuing, that is to say:

               (i) any failure by the Master  Servicer (a) to remit any funds to
          the Paying Agent as required by Section 4.03 or (b) to  distribute  or
          cause to be distributed to Certificateholders  any payment required to
          be made by the  Master  Servicer  under  the  terms of this  Agreement
          which,  in either  case,  continues  unremedied  for a period of three
          business  days  after  the date  upon  which  written  notice  of such
          failure,  requiring the same to be remedied,  shall have been given to
          the Master  Servicer by the Trustee or to the Master  Servicer and the
          Trustee by the holders of Certificates evidencing in the aggregate not
          less than 25% of the  aggregate  Voting  Interest  represented  by all
          Certificates; or

               (ii) any  failure  on the  part of the  Master  Servicer  duly to
          observe or perform in any material  respect any other of the covenants
          or agreements on the part of the Master  Servicer in the  Certificates
          or in this  Agreement  which  continues  unremedied for a period of 60
          days after the date on which written notice of such failure, requiring
          the same to be remedied,  shall have been given to the Master Servicer
          by the  Trustee,  or to the  Master  Servicer  and the  Trustee by the
          holders of Certificates  evidencing in the aggregate not less than 25%
          of the aggregate Voting Interest represented by all Certificates; or

               (iii) a  decree  or order of a court  or  agency  or  supervisory
          authority having jurisdiction in the premises for the appointment of a
          trustee,  conservator,  receiver  or  liquidator  in  any  bankruptcy,
          insolvency, readjustment of debt, marshaling of assets and liabilities
          or similar  proceedings,  or for the  winding-up or liquidation of its
          affairs,  shall have been entered against the Master Servicer and such
          decree or order shall have remained in force undischarged and unstayed
          for a period of 60 days; or

               (iv) the Master  Servicer  shall consent to the  appointment of a
          trustee, conservator,  receiver or liquidator or liquidating committee
          in any bankruptcy,  insolvency,  readjustment  of debt,  marshaling of
          assets and liabilities,  voluntary  liquidation or similar proceedings
          of or  relating  to the Master  Servicer,  or of or relating to all or
          substantially all of its property; or

               (v) the Master  Servicer  shall admit in writing its inability to
          pay its debts  generally  as they become due,  file a petition to take
          advantage of any applicable  insolvency,  bankruptcy or reorganization
          statute,  make an  assignment  for the  benefit  of its  creditors  or
          voluntarily suspend payment of its obligations;

               (vi) the Master Servicer shall be dissolved,  or shall dispose of
          all or substantially  all of its assets;  or consolidate with or merge
          into another  entity or shall permit  another entity to consolidate or
          merge  into it,  such  that  the  resulting  entity  does not meet the
          criteria  for a  successor  servicer,  as  specified  in Section  6.02
          hereof; or

               (vii) the Master  Servicer  and any  subservicer  appointed by it
          becomes   ineligible  to  service  for  both  FNMA  and  FHMLC,  which
          ineligibility continues unremedied for a period of 90 days.

then, and in each and every such case,  subject to applicable law, so long as an
Event of Default shall not have been remedied, either the Trustee or the holders
of  Certificates  evidencing  in the  aggregate  not  less  than  66 2/3% of the
aggregate Voting Interest represented by all Certificates,  by notice in writing
to the Master Servicer and the Trust  Administrator (and to the Trustee if given
by the  Certificateholders)  may terminate all of the rights and  obligations of
the Master Servicer under this Agreement and in and to the Mortgage  Loans,  but
without  prejudice  to any  rights  which the  Master  Servicer  may have to the
aggregate  Master Servicing Fees due prior to the date of transfer of the Master
Servicer's responsibilities  hereunder,  reimbursement of expenses to the extent
permitted by this  Agreement,  Periodic  Advances and other  advances of its own
funds. Upon receipt by the Master Servicer of such written notice, all authority
and power of the Master Servicer under this  Agreement,  whether with respect to
the Certificates or the Mortgage Loans or otherwise, shall pass to and be vested
in the Trust  Administrator  on behalf of the Trustee pursuant to and under this
Section, subject to the provisions of Section 7.05; and, without limitation, the
Trust  Administrator on behalf of the Trustee is hereby authorized and empowered
to execute and deliver, on behalf of the Master Servicer, as attorney-in-fact or
otherwise, any and all documents and other instruments,  and to do or accomplish
all other acts or things necessary or appropriate to effect the purposes of such
notice of  termination,  whether to complete  the transfer  and  endorsement  or
assignment of the Mortgage Loans and related documents or otherwise.  The Master
Servicer  agrees to cooperate  with the Trust  Administrator  and the Trustee in
effecting the termination of the Master Servicer's  responsibilities  and rights
hereunder  and shall  promptly  provide the Trustee  all  documents  and records
reasonably  requested  by it  to  enable  it to  assume  the  Master  Servicer's
functions  hereunder and shall promptly also transfer to the Trust Administrator
on behalf of the Trustee  all  amounts  which then have been or should have been
deposited  in the  Certificate  Account  by the  Master  Servicer  or which  are
thereafter received by the Master Servicer with respect to the Mortgage Loans.

Section 7.02. Other Remedies of Trustee.

     During the  continuance  of any Event of Default,  so long as such Event of
Default  shall not have been  remedied,  the Trustee,  in addition to the rights
specified in Section 7.01,  shall have the right,  in its own name as trustee of
an express  trust,  to take all  actions  now or  hereafter  existing at law, in
equity or by statute to enforce  its  rights  and  remedies  and to protect  the
interests,  and  enforce  the rights  and  remedies,  of the  Certificateholders
(including the institution and prosecution of all judicial,  administrative  and
other  proceedings  and the  filing of  proofs  of claim and debt in  connection
therewith).  Except as otherwise expressly provided in this Agreement, no remedy
provided for by this Agreement shall be exclusive of any other remedy,  and each
and every remedy shall be cumulative  and in addition to any other remedy and no
delay or omission to exercise any right or remedy shall impair any such right or
remedy or shall be deemed to be a waiver of any Event of Default.

Section 7.03.  Directions  by  Certificateholders  and Duties of Trustee  During
Event of Default.

     During the  continuance  of any Event of Default,  Holders of  Certificates
evidencing in the aggregate not less than 25% of the aggregate  Voting  Interest
represented  by all  Certificates  may  direct  the  time,  method  and place of
conducting any proceeding for any remedy available to the Trustee, or exercising
any trust or power conferred upon the Trustee,  under this Agreement;  provided,
however,  that the  Trustee  shall be under no  obligation  to  pursue  any such
remedy,  or to  exercise  any of the  trusts  or  powers  vested  in it by  this
agreement (including, without limitation, (i) the conducting or defending of any
administrative action or litigation hereunder or in relation hereto and (ii) the
terminating  of the Master  Servicer  from its  rights  and  duties as  servicer
hereunder) at the request, order or direction of any of the  Certificateholders,
unless such  Certificateholders  shall have  offered to the  Trustee  reasonable
security or indemnity  against the cost,  expenses and liabilities  which may be
incurred  therein  or  thereby  and,  provided  further,  that,  subject  to the
provisions  of  Section  8.01,  the  Trustee  shall have the right to decline to
follow any such  direction  if the  Trustee,  in  accordance  with an Opinion of
Counsel,  determines  that the action or proceeding so directed may not lawfully
be  taken  or if the  Trustee  in good  faith  determines  that  the  action  or
proceeding  so directed  would  involve it in personal  liability or be unjustly
prejudicial to the nonassenting Certificateholders.

Section 7.04. Action upon Certain Failures of the Master Servicer and upon Event
of Default.

     In the  event  that the  Trustee  or the  Trust  Administrator  shall  have
knowledge of any failure of the Master Servicer  specified in Section 7.01(i) or
(ii) which would become an Event of Default upon the Master  Servicer's  failure
to remedy the same after  notice,  the Trustee or Trust  Administrator  may, but
need not if the Trustee or Trust Administrator, as the case may be, deems it not
in the  Certificateholders'  best  interest,  give notice  thereof to the Master
Servicer. For all purposes of this Agreement, in the absence of actual knowledge
by a  corporate  trust  officer of the Trustee or the Trust  Administrator,  the
Trustee or the Trust  Administrator,  as the case may be, shall not be deemed to
have  knowledge  of any failure of the Master  Servicer as  specified in Section
7.01(i) and (ii) or any Event of Default unless  notified  thereof in writing by
the Master Servicer or by a Certificateholder.

Section 7.05. Trust Administrator to Act; Appointment of Successor.

     When the Master Servicer receives notice of termination pursuant to Section
7.01 or the Trustee or the Trust  Administrator  receives the resignation of the
Master Servicer evidenced by an Opinion of Counsel pursuant to Section 6.04, the
Trust  Administrator  on behalf of the  Trustee  shall be the  successor  in all
respects to the Master  Servicer in its capacity as master  servicer  under this
Agreement and the  transactions  set forth or provided for herein and shall have
the rights and  powers  and be subject to all the  responsibilities,  duties and
liabilities  relating  thereto  placed on the Master  Servicer  by the terms and
provisions  hereof and in its  capacity  as such  successor  shall have the same
limitation of liability herein granted to the Master Servicer. In the event that
the Trust  Administrator  is  succeeding  to the Master  Servicer  as the Master
Servicer, as compensation therefor, the Trust Administrator shall be entitled to
receive  monthly such portion of the Master  Servicing  Fee,  together with such
other  servicing  compensation  as is  agreed  to at  such  time  by  the  Trust
Administrator  and the Master  Servicer,  but in no event more than 25%  thereof
until the date of final cessation of the Master Servicer's  servicing activities
hereunder.  Notwithstanding  the above, the Trust Administrator may, if it shall
be  unwilling  to so act,  or  shall,  if it is  unable to so act or to obtain a
qualifying  bid as described  below,  appoint,  or petition a court of competent
jurisdiction  to  appoint,  any housing and home  finance  institution,  bank or
mortgage  servicing  institution having a net worth of not less than $10,000,000
and  meeting  such other  standards  for a  successor  servicer as are set forth
herein,  as the successor to the Master Servicer  hereunder in the assumption of
all or any part of the  responsibilities,  duties or  liabilities  of the Master
Servicer  hereunder;  provided,  however,  that  until such a  successor  master
servicer  is  appointed  and  has  assumed  the  responsibilities,   duties  and
liabilities of the Master  Servicer  hereunder,  the Trust  Administrator  shall
continue  as the  successor  to the  Master  Servicer  as  provided  above.  The
compensation of any successor  master servicer so appointed shall not exceed the
compensation   specified  in  Section  6.05  hereof.  In  the  event  the  Trust
Administrator  is  required  to  solicit  bids  as  provided  above,  the  Trust
Administrator shall solicit, by public announcement,  bids from housing and home
finance  institutions,  banks and mortgage  servicing  institutions  meeting the
qualifications  set forth in the  preceding  sentence  for the  purchase  of the
master  servicing  functions.  Such public  announcement  shall specify that the
successor  master  servicer  shall be  entitled to the full amount of the Master
Servicing Fee as compensation together with the other servicing  compensation in
the form of late reporting fees or otherwise as provided in Section 6.05. Within
30 days  after  any such  public  announcement,  the Trust  Administrator  shall
negotiate and effect the sale,  transfer and assignment of the master  servicing
rights and  responsibilities  hereunder to the qualified  party  submitting  the
highest  qualifying  bid.  The Trust  Administrator  shall  deduct all costs and
expenses of any public  announcement and of any sale, transfer and assignment of
the servicing rights and responsibilities hereunder from any sum received by the
Trust Administrator from the successor to the Master Servicer in respect of such
sale, transfer and assignment.  After such deductions, the remainder of such sum
shall be paid by the Trust  Administrator  to the Master Servicer at the time of
such sale, transfer and assignment to the Master Servicer's successor. The Trust
Administrator  and such successor  shall take such action,  consistent with this
Agreement,  as shall be necessary to effectuate any such succession.  The Master
Servicer  agrees to cooperate  with the Trust  Administrator  and any  successor
servicer  in  effecting  the  termination  of the  Master  Servicer's  servicing
responsibilities  and rights  hereunder  and shall  promptly  provide  the Trust
Administrator or such successor master  servicer,  as applicable,  all documents
and  records  reasonably  requested  by it to  enable it to  assume  the  Master
Servicer's  function  hereunder  and shall  promptly  also transfer to the Trust
Administrator  or such successor  master  servicer,  as applicable,  all amounts
which then have been or should have been deposited in the Certificate Account by
the Master Servicer or which are thereafter received by the Master Servicer with
respect to the Mortgage  Loans.  Neither the Trust  Administrator  nor any other
successor  master servicer shall be deemed to be in default  hereunder by reason
of any failure to make, or any delay in making,  any  distribution  hereunder or
any portion thereof caused by (i) the failure of the Master Servicer to deliver,
or  any  delay  in  delivering,  cash,  documents  or  records  to it,  or  (ii)
restrictions  imposed by any regulatory  authority having  jurisdiction over the
Master Servicer.  Notwithstanding  anything to the contrary contained in Section
7.01 above or this Section  7.05,  the Master  Servicer  shall retain all of its
rights and  responsibilities  hereunder,  and no successor  (including the Trust
Administrator)  shall  succeed  thereto,  if  the  assumption  thereof  by  such
successor  would cause the rating  assigned to any  Certificates  to be revoked,
downgraded or placed on credit review status (other than for possible upgrading)
by either Rating Agency and the retention  thereof by the Master  Servicer would
avert such revocation, downgrading or review.

Section 7.06. Notification to Certificateholders.

     Upon any  termination of the Master  Servicer or appointment of a successor
master servicer,  in each case as provided herein, the Trust Administrator shall
give prompt  written notice thereof to  Certificateholders  at their  respective
addresses appearing in the Certificate  Register.  The Trust Administrator shall
also,  within 45 days after the  occurrence of any Event of Default known to the
Trust Administrator,  give written notice thereof to Certificateholders at their
respective addresses appearing in the Certificate Register, unless such Event of
Default shall have been cured or waived within said 45 day period.


<PAGE>
ARTICLE VIII

CONCERNING THE TRUSTEE AND THE TRUST ADMINISTRATOR

Section 8.01. Duties of Trustee and Trust Administrator.

     The  Trustee and the Trust  Administrator,  prior to the  occurrence  of an
Event of Default  and after the  curing of all Events of Default  which may have
occurred,  undertakes  to  perform  such  duties  and only  such  duties  as are
specifically  set  forth in this  Agreement.  In case an Event  of  Default  has
occurred  (which has not been cured),  the Trustee and the Trust  Administrator,
subject to the provisions of Sections 7.01,  7.03, 7.04 and 7.05, shall exercise
such of the rights and powers vested in it by this  Agreement,  and use the same
degree of care and skill in its exercise as a prudent investor would exercise or
use under the circumstances in the conduct of such investor's own affairs.

     The Trustee and the Trust  Administrator,  upon receipt of all resolutions,
certificates,   statements,   opinions,  reports,  documents,  orders  or  other
instruments  furnished  to the  Trustee and the Trust  Administrator,  which are
specifically  required  to be  furnished  pursuant  to  any  provision  of  this
Agreement, shall examine them to determine whether they are in the form required
by  this  Agreement;   provided,   however,  that  the  Trustee  and  the  Trust
Administrator  shall not be  responsible  for the  accuracy  or  content  of any
certificate,  statement,  instrument, report, notice or other document furnished
by the Master Servicer or the Servicers pursuant to Articles III, IV and IX.

     No  provision of this  Agreement  shall be construed to relieve the Trustee
and the Trust Administrator from liability for its own negligent action, its own
negligent failure to act or its own willful misconduct; provided, however, that:

               (i) Prior to the  occurrence of an Event of Default and after the
          curing of all such  Events of  Default  which may have  occurred,  the
          duties and  obligations  of the  Trustee  and the Trust  Administrator
          shall  be  determined  solely  by  the  express   provisions  of  this
          Agreement, the Trustee and the Trust Administrator shall not be liable
          except  for the  performance  of such  duties and  obligations  as are
          specifically  set forth in this  Agreement,  no implied  covenants  or
          obligations  shall be read into this Agreement against the Trustee and
          the Trust  Administrator  and, in the absence of bad faith on the part
          of the Trustee and the Trust Administrator,  the Trustee and the Trust
          Administrator may conclusively rely, as to the truth of the statements
          and the  correctness  of the  opinions  expressed  therein,  upon  any
          certificates  or  opinions  furnished  to the  Trustee  and the  Trust
          Administrator, and conforming to the requirements of this Agreement;

               (ii)  The  Trustee  and  the  Trust  Administrator  shall  not be
          personally  liable  with  respect to any  action  taken,  suffered  or
          omitted  to be  taken  by it in good  faith  in  accordance  with  the
          direction of holders of  Certificates  which evidence in the aggregate
          not  less  than  25%  of  the  Voting  Interest   represented  by  all
          Certificates  relating to the time, method and place of conducting any
          proceeding  for any  remedy  available  to the  Trustee  and the Trust
          Administrator,  or exercising  any trust or power  conferred  upon the
          Trustee and the Trust Administrator, under this Agreement; and

               (iii) The Trustee and the Trust Administrator shall not be liable
          for  any  error  of  judgment  made  in  good  faith  by any of  their
          respective  Responsible  Officers,  unless it shall be proved that the
          Trustee or the Trust Administrator or such Responsible Officer, as the
          case may be, was negligent in ascertaining the pertinent facts.

     None of the  provisions  contained  in this  Agreement  shall  require  the
Trustee or the Trust  Administrator to expend or risk its own funds or otherwise
incur  personal  financial  liability  in the  performance  of any of its duties
hereunder  or in the  exercise  of any of its  rights  or  powers  if  there  is
reasonable  ground  for  believing  that  repayment  of such  funds or  adequate
indemnity against such risk or liability is not reasonably assured to it.

Section 8.02. Certain Matters Affecting the Trustee and the Trust Administrator.

     Except as otherwise provided in Section 8.01:

               (i) Each of the Trustee and the Trust  Administrator may rely and
          shall be  protected  in  acting or  refraining  from  acting  upon any
          resolution,  Officers'  Certificate,  certificate  of  auditors or any
          other certificate,  statement,  instrument,  opinion,  report, notice,
          request,  consent, order,  appraisal,  bond or other paper or document
          believed by it to be genuine and to have been signed or  presented  by
          the proper party or parties;

               (ii) Each of the Trustee and the Trust  Administrator may consult
          with  counsel,  and any Opinion of Counsel  shall be full and complete
          authorization  and  protection  in  respect  of any  action  taken  or
          suffered or omitted by it  hereunder  in good faith and in  accordance
          with such Opinion of Counsel;

               (iii) Neither of the Trustee nor the Trust Administrator shall be
          personally  liable for any action taken,  suffered or omitted by it in
          good  faith  and  believed  by it  to  be  authorized  or  within  the
          discretion or rights or powers  conferred  upon it by this  Agreement;
          and

               (iv) Each of the Trustee and the Trust  Administrator may execute
          any of the trusts or powers  hereunder or perform any duties hereunder
          either directly or by or through agents or attorneys.

Section  8.03.  Neither  Trustee  nor  Trust  Administrator   Required  to  Make
Investigation.

     Prior to the  occurrence  of an Event of  Default  hereunder  and after the
curing of all Events of Default which may have occurred, neither the Trustee nor
the Trust  Administrator shall be bound to make any investigation into the facts
or  matters  stated  in  any  resolution,  certificate,  statement,  instrument,
opinion,  report, notice, request,  consent,  order, appraisal,  bond, Mortgage,
Mortgage Note or other paper or document  (provided the same appears  regular on
its face),  unless  requested  in  writing  to do so by holders of  Certificates
evidencing in the aggregate not less than 51% of the Voting Interest represented
by all Certificates;  provided, however, that if the payment within a reasonable
time to the  Trustee  or the  Trust  Administrator  of the  costs,  expenses  or
liabilities  likely to be incurred by it in the making of such investigation is,
in the opinion of the Trustee or the Trust Administrator, not reasonably assured
to the Trustee or the Trust  Administrator by the security afforded to it by the
terms of this  Agreement,  the  Trustee or the Trust  Administrator  may require
reasonable  indemnity  against  such  expense or  liability as a condition to so
proceeding.  The reasonable expense of every such investigation shall be paid by
the Master Servicer or, if paid by the Trustee or the Trust Administrator, shall
be repaid by the Master Servicer upon demand.

Section 8.04. Neither Trustee nor Trust Administrator Liable for Certificates or
Mortgage Loans.

     The  recitals  contained  herein and in the  Certificates  (other  than the
certificate  of  authentication  on the  Certificates)  shall  be  taken  as the
statements  of the Seller,  and neither the Trustee nor the Trust  Administrator
assumes  responsibility  as to the correctness of the same.  Neither the Trustee
nor the Trust  Administrator makes any representation for the correctness of the
same. Neither the Trustee nor the Trust  Administrator  makes any representation
as to the validity or sufficiency of this Agreement or of the Certificates or of
any Mortgage  Loan or related  document.  Subject to Section  2.04,  neither the
Trustee  nor  the  Trust  Administrator  shall  be  accountable  for  the use or
application by the Seller of any of the  Certificates or of the proceeds of such
Certificates,  or for the use or  application  of any funds  paid to the  Master
Servicer in respect of the Mortgage Loans deposited into the Certificate Account
by the Master  Servicer or, in its capacity as trustee,  for  investment  of any
such amounts.

Section 8.05. Trustee and Trust Administrator May Own Certificates.

     Each of the Trustee,  the Trust Administrator and any agent thereof, in its
individual  or  any  other  capacity,   may  become  the  owner  or  pledgee  of
Certificates  with the same rights it would have if it were not  Trustee,  Trust
Administrator or such agent.

Section 8.06. The Master Servicer to Pay Fees and Expenses.

     The Master Servicer  covenants and agrees to pay to each of the Trustee and
the Trust Administrator from time to time, and each of the Trustee and the Trust
Administrator shall be entitled to receive, reasonable compensation (which shall
not be  limited  by any  provision  of law in  regard to the  compensation  of a
trustee of an express trust) for all services rendered by it in the execution of
the trusts  hereby  created and in the  exercise and  performance  of any of the
powers and duties  hereunder of the Trustee or the Trust  Administrator,  as the
case may be, and the Master  Servicer  will pay or reimburse  the Trustee or the
Trust  Administrator,  as the case may be, upon its  request for all  reasonable
expenses,  disbursements  and advances incurred or made by it in accordance with
any of the provisions of this Agreement  (including the reasonable  compensation
and the  expenses  and  disbursements  of its  counsel  and of all  persons  not
regularly in its employ)  except any such expense,  disbursement,  or advance as
may arise from its negligence or bad faith.

Section 8.07. Eligibility Requirements.

     Each of the  Trustee  and the Trust  Administrator  hereunder  shall at all
times (i) be a corporation or association having its principal office in a state
and city  acceptable to the Seller,  organized and doing business under the laws
of such state or the United  States of  America,  authorized  under such laws to
exercise  corporate  trust powers,  having a combined  capital and surplus of at
least $50,000,000,  or shall be a member of a bank holding system, the aggregate
combined capital and surplus of which is at least $50,000,000, provided that its
separate capital and surplus shall at all times be at least the amount specified
in Section  310(a)(2)  of the Trust  Indenture  Act of 1939,  (ii) be subject to
supervision or examination by federal or state authority and (iii) have a credit
rating or be otherwise  acceptable  to the Rating  Agencies such that neither of
the Rating  Agencies would reduce their  respective  then current ratings of the
Certificates  (or have provided such security from time to time as is sufficient
to avoid such reduction) as evidenced in writing by each Rating Agency.  If such
corporation or  association  publishes  reports of condition at least  annually,
pursuant to law or to the requirements of the aforesaid supervising or examining
authority,  then for the  purposes  of this  Section  the  combined  capital and
surplus of such  corporation or  association  shall be deemed to be its combined
capital  and  surplus as set forth in its most  recent  report of  condition  so
published.  In case at any time the  Trustee  or the Trust  Administrator  shall
cease to be eligible in accordance  with the  provisions  of this Section,  such
entity shall resign  immediately in the manner and with the effect  specified in
Section 8.08.

Section 8.08. Resignation and Removal.

     Either of the Trustee or the Trust Administrator may at any time resign and
be  discharged  from the  trust  hereby  created  by  giving  written  notice of
resignation to the Master  Servicer,  such  resignation to be effective upon the
appointment of a successor  trustee.  Upon receiving such notice of resignation,
the  Master  Servicer  shall  promptly  appoint a  successor  trustee by written
instrument, in duplicate, one copy of which instrument shall be delivered to the
resigning  entity and one copy to its successor.  If no successor  trustee shall
have been  appointed  and have  accepted  appointment  within 30 days  after the
giving  of  such  notice  of  resignation,   the  resigning   Trustee  or  Trust
Administrator,  as the  case  may  be,  may  petition  any  court  of  competent
jurisdiction for the appointment of a successor trustee or trust administrator.

     If at any time the  Trustee or the Trust  Administrator  shall  cease to be
eligible in  accordance  with the  provisions  of Section 8.07 and shall fail to
resign after written request for its resignation by the Master  Servicer,  or if
at any time the Trustee or the Trust  Administrator  shall  become  incapable of
acting,  or an order for relief  shall have been  entered in any  bankruptcy  or
insolvency  proceeding with respect to such entity, or a receiver of such entity
or of its property  shall be appointed,  or any public officer shall take charge
or  control of the  Trustee or the Trust  Administrator  or of the  property  or
affairs  of  the  Trustee  or  the  Trust   Administrator  for  the  purpose  of
rehabilitation,  conversion or liquidation, or the Master Servicer shall deem it
necessary  in order to  change  the  situs of the  Trust  Estate  for  state tax
reasons,  then the Master  Servicer  shall  remove the Trustee  and/or the Trust
Administrator,  as the case may be,  and  appoint  a  successor  trustee  and/or
successor trust administrator by written instrument,  in duplicate,  one copy of
which  instrument  shall be delivered to the Trustee or Trust  Administrator  so
removed and one copy to the successor trustee or successor trust  administrator,
as the case may be.

     The Holders of  Certificates  evidencing in the aggregate not less than 51%
of the  Voting  Interests  represented  by all  Certificates  (except  that  any
Certificate  registered  in the name of the Seller,  the Master  Servicer or any
affiliate  thereof  will not be taken into  account in  determining  whether the
requisite Voting Interests has been obtained) may at any time remove the Trustee
and/or the Trust  Administrator and appoint a successor by written instrument or
instruments,  in triplicate,  signed by such holders or their  attorneys-in-fact
duly authorized, one complete set of which instruments shall be delivered to the
Master  Servicer,  one complete set of which shall be delivered to the entity or
entities so removed and one  complete  set of which  shall be  delivered  to the
successor so appointed.

     Any  resignation or removal of the Trustee or the Trust  Administrator  and
appointment  of a successor  pursuant to any of the  provisions  of this Section
shall become  effective  upon  acceptance  of  appointment  by the  successor as
provided in Section 8.09.

Section 8.09. Successor.

     Any  successor  trustee  or  successor  trust  administrator  appointed  as
provided in Section 8.08 shall  execute,  acknowledge  and deliver to the Master
Servicer and to its predecessor trustee or trust administrator,  as the case may
be, an  instrument  accepting  such  appointment  hereunder,  and  thereupon the
resignation or removal of the predecessor  trustee or trust  administrator shall
become  effective,  and  such  successor,  without  any  further  act,  deed  or
reconveyance,  shall become fully vested with all the rights, powers, duties and
obligations  of its  predecessor  hereunder,  with like effect as if  originally
named as  trustee  or trust  administrator,  as the  case  may be,  herein.  The
predecessor  trustee or trust  administrator  shall deliver to its successor all
Owner  Mortgage  Loan Files and  related  documents  and  statements  held by it
hereunder  (other  than any  Owner  Mortgage  Loan  Files at the time  held by a
Custodian,  which  Custodian  shall  become the agent of any  successor  trustee
hereunder), and the Seller, the Master Servicer and the predecessor entity shall
execute and deliver such  instruments and do such other things as may reasonably
be required for more fully and certainly vesting and confirming in the successor
trustee or successor trust  administrator,  as the case may be, all such rights,
powers,  duties and  obligations.  No  successor  shall  accept  appointment  as
provided in this Section  unless at the time of such  acceptance  such successor
shall be eligible under the provisions of Section 8.07

     Upon  acceptance of appointment by a successor as provided in this Section,
the Master Servicer shall mail notice of the succession of such trustee or trust
administrator  hereunder to all Holders of  Certificates  at their  addresses as
shown in the  Certificate  Register.  If the Master  Servicer fails to mail such
notice  within  ten days  after  acceptance  of the  successor  trustee or trust
administrator,  as the case may be, the successor trustee or trust administrator
shall cause such notice to be mailed at the expense of the Master Servicer.

Section 8.10.     Merger or Consolidation.

     Any Person into which either the Trustee or the Trust  Administrator may be
merged or converted or with which it may be  consolidated,  to which it may sell
or transfer its corporate trust business and assets as a whole or  substantially
as a whole or any Person resulting from any merger, sale,  transfer,  conversion
or  consolidation  to which the  Trustee or the Trust  Administrator  shall be a
party,  or any Person  succeeding  to the business of such entity,  shall be the
successor of the Trustee or Trust Administrator,  as the case may be, hereunder;
provided,  however,  that (i) such Person shall be eligible under the provisions
of Section 8.07, without the execution or filing of any paper or any further act
on the  part of any of the  parties  hereto,  anything  herein  to the  contrary
notwithstanding,  and (ii) the Trustee or the Trust  Administrator,  as the case
may be,  shall  deliver  an  Opinion  of  Counsel  to the  Seller and the Master
Servicer to the effect that such merger,  consolidation,  sale or transfer  will
not subject  the REMIC to federal,  state or local tax or cause the REMIC to not
qualify as a REMIC, which Opinion of Counsel shall be at the sole expense of the
Trustee or the Trust Administrator, as the case may be.

Section 8.11.     Authenticating Agent.

     The Trust Administrator may appoint an Authenticating Agent, which shall be
authorized  to act  on  behalf  of the  Trust  Administrator  in  authenticating
Certificates. Wherever reference is made in this Agreement to the authentication
of  Certificates  by  the  Trust  Administrator  or  the  Trust  Administrator's
countersignature,  such reference shall be deemed to include  authentication  on
behalf of the Trust Administrator by the Authenticating  Agent and a certificate
of  authentication  executed  on  behalf  of  the  Trust  Administrator  by  the
Authenticating  Agent. The Authenticating Agent must be acceptable to the Seller
and the Master  Servicer and must be a corporation  organized and doing business
under  the laws of the  United  States  of  America  or of any  state,  having a
principal  office and place of  business in a state and city  acceptable  to the
Seller and the Master  Servicer,  having a combined  capital  and  surplus of at
least $15,000,000, authorized under such laws to do a trust business and subject
to supervision or examination by federal or state authorities.

     Any  corporation  into  which  the  Authenticating  Agent  may be merged or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  conversion or consolidation to which the Authenticating  Agent
shall be a party, or any corporation succeeding to the corporate agency business
of the  Authenticating  Agent,  shall be the  Authenticating  Agent  without the
execution  or filing of any  paper or any  further  act on the part of the Trust
Administrator or the Authenticating Agent.

     The Authenticating Agent may at any time resign by giving at least 30 days'
advance written notice of resignation to the Trustee,  the Trust  Administrator,
the Seller  and the Master  Servicer.  The Trust  Administrator  may at any time
terminate  the  agency  of the  Authenticating  Agent by giving  written  notice
thereof to the  Authenticating  Agent, the Seller and the Master Servicer.  Upon
receiving a notice of resignation or upon such a termination,  or in case at any
time the Authenticating  Agent shall cease to be eligible in accordance with the
provisions of this Section 8.11, the Trust Administrator  promptly shall appoint
a  successor  Authenticating  Agent,  which  shall be  acceptable  to the Master
Servicer,  and shall give written notice of such appointment to the Seller,  and
shall mail notice of such appointment to all  Certificateholders.  Any successor
Authenticating  Agent upon acceptance of its appointment  hereunder shall become
vested  with  all  the  rights,  powers,  duties  and  responsibilities  of  its
predecessor hereunder, with like effect as if originally named as Authenticating
Agent  herein.  No  successor  Authenticating  Agent shall be  appointed  unless
eligible under the provisions of this Section 8.11.

     The Authenticating  Agent shall have no responsibility or liability for any
action  taken by it as such at the  direction  of the Trust  Administrator.  Any
reasonable compensation paid to the Authenticating Agent shall be a reimbursable
expense under Section 8.06.

Section 8.12.     Separate Trustees and Co-Trustees.

     The  Trustee  shall have the power from time to time to appoint one or more
persons or corporations  to act either as co-trustees  jointly with the Trustee,
or as separate  trustees,  for the purpose of holding title to,  foreclosing  or
otherwise  taking  action with  respect to any  Mortgage  Loan outside the state
where the Trustee  has its  principal  place of  business,  where such  separate
trustee or  co-trustee  is necessary or advisable  (or the Trustee is advised by
the Master  Servicer  that such  separate  trustee or co-trustee is necessary or
advisable) under the laws of any state in which a Mortgaged  Property is located
or for the purpose of otherwise conforming to any legal requirement, restriction
or  condition  in any state in which a  Mortgaged  Property is located or in any
state in which any portion of the Trust Estate is located.  The Master  Servicer
shall advise the Trustee when, in its good faith opinion,  a separate trustee or
co-trustee  is necessary or advisable  as  aforesaid.  The separate  trustees or
co-trustees  so  appointed  shall  be  trustees  for the  benefit  of all of the
Certificateholders  and shall have such powers,  rights and remedies as shall be
specified in the  instrument of  appointment;  provided,  however,  that no such
appointment  shall, or shall be deemed to,  constitute the appointee an agent of
the  Trustee.  The  Seller  and the  Master  Servicer  shall  join  in any  such
appointment,  but such joining shall not be necessary for the  effectiveness  of
such appointment.

     Every separate  trustee and co-trustee  shall,  to the extent  permitted by
law, be appointed and act subject to the following provisions and conditions:

               (i) all powers, duties, obligations and rights conferred upon the
          Trustee,  in respect of the  receipt,  custody  and  payment of moneys
          shall be exercised solely by the Trustee;

               (ii) all other rights,  powers,  duties and obligations conferred
          or imposed  upon the Trustee  shall be  conferred  or imposed upon and
          exercised  or performed  by the Trustee and such  separate  trustee or
          co-trustee  jointly,  except to the  extent  that under any law of any
          jurisdiction  in which any  particular act or acts are to be performed
          (whether as Trustee  hereunder or as successor to the Master  Servicer
          hereunder)  the Trustee shall be incompetent or unqualified to perform
          such act or acts,  in which  event  such  rights,  powers,  duties and
          obligations (including the holding of title to the Trust Estate or any
          portion  thereof  in any such  jurisdiction)  shall be  exercised  and
          performed by such separate trustee or co-trustee;

               (iii)  no  separate  trustee  or  co-trustee  hereunder  shall be
          personally  liable  by  reason  of any act or  omission  of any  other
          separate trustee or co-trustee hereunder; and

               (iv) the  Trustee may at any time  accept the  resignation  of or
          remove any separate  trustee or co-trustee so appointed by it, if such
          resignation  or  removal  does not  violate  the  other  terms of this
          Agreement.

     Any notice,  request or other  writing given to the Trustee shall be deemed
to have been given to each of the then  separate  trustees and  co-trustees,  as
effectively  as if  given  to each of  them.  Every  instrument  appointing  any
separate trustee, co-trustee, or custodian shall refer to this Agreement and the
conditions  of this  Article.  Each separate  trustee and  co-trustee,  upon its
acceptance of the trusts conferred, shall be vested with the estates or property
specified in its instrument of appointment,  either jointly with the Trustee, or
separately,  as may be provided  therein,  subject to all the provisions of this
Agreement,  specifically including every provision of this Agreement relating to
the conduct of,  affecting  the liability  of, or affording  protection  to, the
Trustee. Every such instrument shall be furnished to the Trustee.

     Any separate trustee, co-trustee, or custodian may, at any time, constitute
the Trustee,  its agent or attorney-in-fact,  with full power and authority,  to
the extent not  prohibited  by law,  to do any lawful act under or in respect of
this  Agreement  on its  behalf  and in its name.  If any  separate  trustee  or
co-trustee shall die, become incapable of acting,  resign or be removed,  all of
its  estates,  properties,  rights,  remedies  and  trusts  shall vest in and be
exercised by the Trustee to the extent permitted by law, without the appointment
of a new or successor trustee.

     No separate  trustee or co-trustee  hereunder shall be required to meet the
terms of eligibility as a successor  trustee under Section 8.07 hereunder and no
notice to  Certificateholders of the appointment thereof shall be required under
Section 8.09 hereof.

     The  Trustee  agrees to  instruct  its  co-trustees,  if any, to the extent
necessary to fulfill such entity's obligations hereunder.

     The  Master   Servicer  shall  pay  the  reasonable   compensation  of  the
co-trustees to the extent,  and in accordance  with the standards,  specified in
Section 8.06 hereof.

Section 8.13. Appointment of Custodians.

     The Trust  Administrator may at any time on or after the Closing Date, with
the  consent  of the  Master  Servicer  and  the  Seller,  appoint  one or  more
Custodians  to hold all or a portion of the Owner  Mortgage  Loan Files as agent
for the Trust Administrator,  by entering into a Custodial Agreement. Subject to
this Article VIII,  the Trust  Administrator  agrees to comply with the terms of
each Custodial Agreement and to enforce the terms and provisions thereof against
the Custodian for the benefit of the Certificateholders. Each Custodian shall be
a depository  institution  subject to supervision by federal or state authority,
shall have a combined  capital and surplus of at least  $10,000,000 and shall be
qualified  to do  business  in the  jurisdiction  in which it  holds  any  Owner
Mortgage Loan File. Each Custodial  Agreement may be amended only as provided in
Section 10.01(a).

Section 8.14. Tax Matters; Compliance with REMIC Provisions.

     (a) Each of the Trustee,  the Trust  Administrator  and the Master Servicer
covenants  and agrees  that it shall  perform its duties  hereunder  in a manner
consistent with the REMIC  Provisions and shall not knowingly take any action or
fail to take any action  that would (i)  affect the  determination  of the Trust
Estate's status as a REMIC;  or (ii) cause the imposition of any federal,  state
or local income, prohibited transaction, contribution or other tax on either the
REMIC or the Trust Estate.  The Master  Servicer,  or, in the case of any action
required by law to be performed directly by the Trust  Administrator,  the Trust
Administrator,  shall (i) prepare or cause to be  prepared,  timely  cause to be
signed  by the  Trustee  and  file or  cause  to be  filed  annual  federal  and
applicable  state and local  income tax  returns  using a  calendar  year as the
taxable  year for the REMIC and the accrual  method of  accounting;  (ii) in the
first such federal tax return, make, or cause to be made, an election satisfying
the  requirements  of the REMIC  Provisions,  on behalf of the Trust Estate,  to
treat the Trust Estate as a REMIC; (iii) prepare,  execute and forward, or cause
to  be  prepared,   executed  and  forwarded,   to  the  Certificateholders  all
information  reports or tax returns  required with respect to the REMIC,  as and
when  required  to be provided to the  Certificateholders,  and to the  Internal
Revenue  Service  and  any  other  relevant  governmental  taxing  authority  in
accordance with the REMIC Provisions and any other applicable federal,  state or
local  laws,  including  without  limitation  information  reports  relating  to
"original  issue  discount"  and "market  discount" as defined in the Code based
upon the issue  prices,  prepayment  assumption  and cash flows  provided by the
Seller to the Trust Administrator and calculated on a monthly basis by using the
issue prices of the Certificates;  (iv) make available information necessary for
the  application  of any tax imposed on  transferors  of residual  interests  to
"disqualified  organizations"  (as  defined in the REMIC  Provisions);  (v) file
Forms SS-4 and 8811 and  respond to  inquiries  by  Certificateholders  or their
nominees concerning  information returns,  reports or tax returns; (vi) maintain
(or cause to be maintained by the Servicers) such records relating to the REMIC,
including but not limited to the income,  expenses,  individual  Mortgage  Loans
(including REO Mortgage Loans,  other assets and  liabilities of the REMIC,  and
the fair market value and adjusted  basis of the REMIC  property  determined  at
such  intervals  as may be required by the Code,  as may be necessary to prepare
the foregoing returns or information reports; (vii) exercise reasonable care not
to allow the creation of any "interests" in the REMIC within the meaning of Code
Section 860D(a)(2) other than the interests  represented by the Class A-1, Class
A-2,  Class A-3,  Class A-4,  Class A-5,  Class A-6, Class A-7, Class A-8, Class
A-PO, Class A-WIO and Class A-R  Certificates,  the Class M Certificates and the
Class B-l, Class B-2, Class B-3,  Class B-4 and Class B-5  Certificates;  (viii)
exercise  reasonable  care  not to  allow  the  occurrence  of  any  "prohibited
transactions"  within the  meaning of Code  Section  860F(a),  unless the Master
Servicer  shall have provided an Opinion of Counsel to the Trustee and the Trust
Administrator  that such occurrence  would not (a) result in a taxable gain, (b)
otherwise  subject  either the Trust Estate or the REMIC to tax or (c) cause the
Trust Estate to fail to qualify as a REMIC; (ix) exercise reasonable care not to
allow the REMIC to receive  income  from the  performance  of  services  or from
assets not permitted under the REMIC  Provisions to be held by a REMIC;  (x) pay
(on  behalf of the  REMIC)  the amount of any  federal  income  tax,  including,
without  limitation,  prohibited  transaction  taxes,  taxes on net income  from
foreclosure  property,  and taxes on certain  contributions to a REMIC after the
Startup Day,  imposed on the REMIC when and as the same shall be due and payable
(but  such  obligation  shall  not  prevent  the  Master  Servicer  or any other
appropriate  Person from contesting any such tax in appropriate  proceedings and
shall not prevent the Master Servicer from withholding or depositing  payment of
such tax, if permitted  by law,  pending the outcome of such  proceedings);  and
(xi) if  required  or  permitted  by the Code and  applicable  law,  act as "tax
matters person" for the REMIC within the meaning of Treasury Regulations Section
1.860F-4(d),  and the Master Servicer is hereby designated as agent of the Class
A-R  Certificateholder  for such  purpose  (or if the Master  Servicer is not so
permitted,  the Holder of the Class A-R Certificate  shall be tax matters person
in accordance with the REMIC Provisions).  The Master Servicer shall be entitled
to be  reimbursed  pursuant to Section 3.02 for any taxes paid by it pursuant to
clause (x) of the preceding  sentence,  except to the extent that such taxes are
imposed as a result of the bad faith, willful misfeasance or gross negligence of
the  Master  Servicer  in the  performance  of its  obligations  hereunder.  The
Trustee's  sole  duties  with  respect to the REMIC are to sign the tax  returns
referred to in clause (i) of the second  preceding  sentence  and to comply with
written directions from the Master Servicer or the Trust Administrator.

     In order to enable  the Master  Servicer,  the Trust  Administrator  or the
Trustee,  as the case may be, to  perform  its  duties as set forth  above,  the
Seller shall provide, or cause to be provided, to the Master Servicer within ten
days after the Closing  Date all  information  or data that the Master  Servicer
determines to be relevant for tax purposes to the valuations and offering prices
of the Certificates, including, without limitation, the price, yield, prepayment
assumption and projected  cash flows of each Class and Subclass of  Certificates
and the Mortgage Loans in the aggregate. Thereafter, the Seller shall provide to
the Master Servicer, the Trust Administrator or the Trustee, as the case may be,
promptly upon request therefor, any such additional information or data that the
Master Servicer, the Trust Administrator or the Trustee, as the case may be, may
from time to time, request in order to enable the Master Servicer to perform its
duties as set forth above.  The Seller hereby  indemnifies the Master  Servicer,
the Trust  Administrator  or the  Trustee,  as the case may be, for any  losses,
liabilities,  damages,  claims or  expenses  of the Master  Servicer,  the Trust
Administrator or the Trustee arising from any errors or  miscalculations  by the
Master Servicer, the Trust Administrator or the Trustee pursuant to this Section
that  result  from any  failure  of the  Seller  to  provide,  or to cause to be
provided,  accurate  information  or  data to the  Master  Servicer,  the  Trust
Administrator or the Trustee,  as the case may be, on a timely basis. The Master
Servicer hereby indemnifies the Seller, the Trust  Administrator and the Trustee
for any losses,  liabilities,  damages,  claims or  expenses of the Seller,  the
Trust  Administrator or the Trustee arising from the Master  Servicer's  willful
misfeasance,  bad faith or gross  negligence  in  preparing  any of the federal,
state and local tax returns of the REMIC as described  above.  In the event that
the Trust Administrator prepares any of the federal, state and local tax returns
of the REMIC as described above, the Trust Administrator  hereby indemnifies the
Seller,  the  Master  Servicer  and the  Trustee  for any  losses,  liabilities,
damages,  claims or expenses of the Seller,  the Master  Servicer or the Trustee
arising  from  the  Trust  Administrator's  willful  misfeasance,  bad  faith or
negligence in connection with such preparation.

     (b) Notwithstanding  anything in this Agreement to the contrary, the Master
Servicer,  the Trust Administrator and the Trustee shall pay from its own funds,
without  any  right  of  reimbursement   therefor,  the  amount  of  any  costs,
liabilities  and  expenses  incurred  by the Trust  Estate  (including,  without
limitation,  any and all federal,  state or local taxes, including taxes imposed
on "prohibited  transactions" within the meaning of the REMIC Provisions) if and
to the extent that such costs,  liabilities and expenses arise from a failure of
the Master Servicer,  the Trust Administrator or the Trustee,  respectively,  to
perform its obligations under this Section 8.14.

Section 8.15.     Monthly Advances.

     In the  event  that  Norwest  Mortgage  fails  to make a  Periodic  Advance
required to be made pursuant to the Norwest Servicing Agreement on or before the
Distribution  Date,  the Trust  Administrator  shall make a Periodic  Advance as
required by Section  3.03 hereof;  provided,  however,  the Trust  Administrator
shall not be required to make such Periodic  Advances if prohibited by law or if
it determines that such Periodic Advance would be a Nonrecoverable Advance. With
respect  to those  Periodic  Advances  which  should  have been made by  Norwest
Mortgage,  the  Trust  Administrator  shall be  entitled,  pursuant  to  Section
3.02(a)(i),  (ii) or (v) hereof,  to be reimbursed from the Certificate  Account
for Periodic Advances and Nonrecoverable Advances made by it.


<PAGE>

ARTICLE IX

TERMINATION

Section  9.01.  Termination  upon Purchase by the Seller or  Liquidation  of All
Mortgage Loans.

     Subject to Section 9.02, the respective obligations and responsibilities of
the Seller, the Master Servicer, the Trust Administrator and the Trustee created
hereby  (other than the  obligation of the Trust  Administrator  to make certain
payments  after  the  Final  Distribution  Date  to  Certificateholders  and the
obligation of the Master  Servicer to send certain  notices as  hereinafter  set
forth and the tax  reporting  obligations  under  Sections 4.05 and 8.14 hereof)
shall  terminate  upon  the  last  action  required  to be  taken  by the  Trust
Administrator  on the  Final  Distribution  Date  pursuant  to this  Article  IX
following  the earlier of (i) the purchase by the Seller of all  Mortgage  Loans
and all property acquired in respect of any Mortgage Loan remaining in the Trust
Estate at a price equal to the sum of (x) 100% of the unpaid  principal  balance
of each  Mortgage  Loan  (other  than any REO  Mortgage  Loan)  as of the  Final
Distribution  Date,  and (y) the fair  market  value of the  Mortgaged  Property
related to any REO Mortgage Loan (as determined by the Master Servicer as of the
close of business on the third  Business Day next  preceding the date upon which
notice of any such  termination is furnished to  Certificateholders  pursuant to
the third paragraph of this Section 9.01),  plus any accrued and unpaid interest
through the last day of the month  preceding  the month of such  purchase at the
applicable   Mortgage  Interest  Rate  and  (ii)  the  final  payment  or  other
liquidation  (or any advance with  respect  thereto) of the last  Mortgage  Loan
remaining in the Trust Estate  (including  for this purpose the discharge of any
Mortgagor  under a defaulted  Mortgage Loan on which a Servicer is not obligated
to foreclose due to environmental impairment) or the disposition of all property
acquired upon  foreclosure  or deed in lieu of foreclosure of any Mortgage Loan;
provided,  however,  that in no event shall the trust  created  hereby  continue
beyond the  expiration  of 21 years from the death of the last  survivor  of the
descendants  of Joseph P. Kennedy,  the late  ambassador of the United States to
the Court of St. James, living on the date hereof.

     The right of the  Seller to  purchase  all the  assets of the Trust  Estate
pursuant to clause (i) of the  preceding  paragraph  are subject to Section 9.02
and conditioned upon the Pool Scheduled  Principal Balance of the Mortgage Loans
as of the  Final  Distribution  Date  being  less than the  amount  set forth in
Section 11.24. In the case of any purchase by the Seller pursuant to said clause
(i),  the Seller  shall  provide to the Trust  Administrator  the  certification
required by Section 3.04 and the Trust  Administrator  and the Custodian  shall,
promptly  following  payment of the  purchase  price,  release to the Seller the
Owner Mortgage Loan Files pertaining to the Mortgage Loans being purchased.

     Notice of any termination,  specifying the Final  Distribution  Date (which
shall be a date that  would  otherwise  be a  Distribution  Date) upon which the
Certificateholders  may surrender their Certificates to the Trust  Administrator
for payment of the final distribution and cancellation,  shall be given promptly
by the Master  Servicer (if it is exercising its right to purchase the assets of
the Trust Estate) or by the Trust Administrator (in any other case) by letter to
Certificateholders  mailed not earlier than the 15th day of the month  preceding
the month of such final distribution and not later than the twentieth day of the
month of such final distribution specifying (A) the Final Distribution Date upon
which  final  payment of the  Certificates  will be made upon  presentation  and
surrender  of  Certificates  at the office or agency of the Trust  Administrator
therein  designated,  (B) the amount of any such final  payment and (C) that the
Record Date otherwise  applicable to such  Distribution  Date is not applicable,
payments  being made (except in the case of any Class A Certificate  surrendered
on a prior  Distribution  Date pursuant to Section 4.01) only upon  presentation
and  surrender  of the  Certificates  at  the  office  or  agency  of the  Trust
Administrator  therein  specified.  If the Master  Servicer is obligated to give
notice to  Certificateholders  as  aforesaid,  it shall give such  notice to the
Trust  Administrator  and the  Certificate  Registrar at the time such notice is
given to  Certificateholders.  In the event  such  notice is given by the Master
Servicer,  the Master  Servicer shall deposit in the  Certificate  Account on or
before the Final  Distribution  Date in  immediately  available  funds an amount
equal to the purchase price for the assets of the Trust Estate computed as above
provided.  Failure to give notice of termination  as described  herein shall not
entitle a  Certificateholder  to any interest beyond the interest payable on the
Final Distribution Date.

     Upon   presentation   and   surrender  of  the   Certificates,   the  Trust
Administrator shall cause to be distributed to  Certificateholders  on the Final
Distribution  Date in proportion  to their  respective  Percentage  Interests an
amount equal to (i) as to the Subclasses of Class A Certificates, the respective
Class A Subclass  Principal  Balance  together with any related Class A Subclass
Unpaid  Interest  Shortfall  and one month's  interest in an amount equal to the
respective  Class A Subclass  Interest  Accrual  Amount,  (ii) as to the Class M
Certificates,  the Class M Principal  Balance  together with any related Class M
Unpaid Interest  Shortfall and one month's  interest at the Class M Pass-Through
Rate on the Class M Principal  Balance,  (iii) as to the  Subclasses  of Class B
Certificates,  the respective Class B Subclass  Principal  Balance together with
any related Class B Subclass Unpaid Interest  Shortfall and one month's interest
in an amount equal to the respective  Class B Subclass  Interest  Accrual Amount
and (iv) as to the Class A-R Certificate,  the amounts,  if any, which remain on
deposit in the Certificate  Account (other than amounts retained to meet claims)
after  application  pursuant to clauses (i), (ii) and (iii) above and payment to
the Master Servicer of any amounts it is entitled as  reimbursement or otherwise
hereunder.  Notwithstanding the foregoing,  if the price paid pursuant to clause
(i) of the first  paragraph of this Section  9.01,  after  reimbursement  to the
Servicers,  the Master  Servicer  and the Trust  Administrator  of any  Periodic
Advances,  is  insufficient to pay in full the amounts set forth in clauses (i),
(ii) and (iii) of this paragraph, then any shortfall in the amount available for
distribution  to  Certificateholders  shall be  allocated  in  reduction  of the
amounts  otherwise  distributable  on the  Final  Distribution  Date in the same
manner as Realized Losses are allocated pursuant to Sections 4.02(b) and 4.02(g)
hereof. Such distribution on the Final Distribution Date shall be in lieu of the
distribution  otherwise required to be made on such Distribution Date in respect
of each Class of Certificates.

     In the event that all of the  Certificateholders  shall not surrender their
Certificates  for final payment and  cancellation  within three months following
the Final  Distribution Date, the Trust  Administrator  shall on such date cause
all  funds,  if  any,  in the  Certificate  Account  not  distributed  in  final
distribution to Certificateholders to be withdrawn therefrom and credited to the
remaining  Certificateholders  by  depositing  such funds in a  separate  escrow
account for the benefit of such Certificateholders,  and the Master Servicer (if
it exercised  its right to purchase the assets of the Trust Estate) or the Trust
Administrator  (in any other  case)  shall give a second  written  notice to the
remaining  Certificateholders  to surrender their  Certificates for cancellation
and receive the final distribution with respect thereto.  If within three months
after the second notice all the Certificates shall not have been surrendered for
cancellation, the Trust Administrator may take appropriate steps, or may appoint
an agent to take appropriate steps, to contact the remaining  Certificateholders
concerning  surrender of their Certificates,  and the cost thereof shall be paid
out of the funds on deposit in such escrow account.

Section 9.02. Additional Termination Requirements.

     In the event of a termination  of the Trust Estate upon the exercise by the
Seller of its  purchase  option as provided in Section  9.01,  the Trust  Estate
shall be terminated in accordance  with the following  additional  requirements,
unless the Trust  Administrator has received an Opinion of Counsel to the effect
that  any  other  manner  of  termination   (i)  will  constitute  a  "qualified
liquidation"   of  the  Trust   Estate   within  the  meaning  of  Code  Section
860F(a)(4)(A)  and (ii) will not  subject  the REMIC to federal tax or cause the
Trust Estate to fail to qualify as a REMIC at any time that any Certificates are
outstanding:

               (i) The notice given by the Master  Servicer  under  Section 9.01
          shall provide that such notice  constitutes  the adoption of a plan of
          complete  liquidation  of the REMIC as of the date of such notice (or,
          if  earlier,  the date on which  the  first  such  notice is mailed to
          Certificateholders).  The Master Servicer shall also specify such date
          in a statement attached to the final tax return of the REMIC; and

               (ii) At or after the time of  adoption of such a plan of complete
          liquidation and at or prior to the Final  Distribution Date, the Trust
          Administrator  shall sell all of the assets of the Trust Estate to the
          Seller for cash at the  purchase  price  specified in Section 9.01 and
          shall  distribute  such cash  within 90 days of such  adoption  in the
          manner specified in Section 9.01.


<PAGE>

ARTICLE X

MISCELLANEOUS PROVISIONS

Section 10.01.    Amendment.

     (a) This  Agreement or any Custodial  Agreement may be amended from time to
time by the  Seller,  the  Master  Servicer,  the  Trust  Administrator  and the
Trustee,  without the consent of any of the Certificateholders,  (i) to cure any
ambiguity or mistake,  (ii) to correct or supplement  any  provisions  herein or
therein which may be inconsistent  with any other provisions  herein or therein,
(iii) to modify,  eliminate  or add to any of its  provisions  to such extent as
shall be necessary to maintain the  qualification of the Trust Estate as a REMIC
at all times that any  Certificates  are outstanding or to avoid or minimize the
risk of the  imposition  of any  federal  tax on the  Trust  Estate or the REMIC
pursuant to the Code that would be a claim  against the Trust  Estate,  provided
that (a) the Trustee  and the Trust  Administrator  have  received an Opinion of
Counsel to the effect that such action is  necessary  or  desirable  to maintain
such  qualification  or to avoid or minimize the risk of the  imposition  of any
such tax and (b) such action shall not, as evidenced by such Opinion of Counsel,
adversely affect in any material respect the interests of any Certificateholder,
(iv) to change the timing and/or nature of deposits into the Certificate Account
provided  that (a) such change shall not, as evidenced by an Opinion of Counsel,
adversely affect in any material respect the interests of any  Certificateholder
and (b) such change shall not adversely  affect the  then-current  rating of the
Certificates  as evidenced  by a letter from each Rating  Agency to such effect,
(v) to modify,  eliminate or add to the  provisions of Section 5.02 or any other
provisions hereof  restricting  transfer of the Certificates,  provided that the
Master  Servicer  for  purposes  of  Section  5.02  has  determined  in its sole
discretion that any such  modifications to this Agreement will neither adversely
affect the rating on the  Certificates  nor give rise to a risk that  either the
Trust Estate or the REMIC or any of the Certificateholders  will be subject to a
tax  caused by a transfer  to a  non-permitted  transferee  and (vi) to make any
other  provisions  with  respect  to  matters or  questions  arising  under this
Agreement or such Custodial Agreement which shall not be materially inconsistent
with the provisions of this  Agreement,  provided that such action shall not, as
evidenced by an Opinion of Counsel, adversely affect in any material respect the
interests of any Certificateholder.

     This Agreement or any Custodial  Agreement may also be amended from time to
time by the Seller, the Master Servicer, the Trust Administrator and the Trustee
with the consent of the Holders of Certificates  evidencing in the aggregate not
less than 66-2/3% of the aggregate Voting Interests of each Class or Subclass of
Certificates  affected  thereby for the purpose of adding any  provisions  to or
changing in any manner or eliminating any of the provisions of this Agreement or
such Custodial Agreement or of modifying in any manner the rights of the Holders
of  Certificates  of such Class or  Subclass;  provided,  however,  that no such
amendment  shall (i) reduce in any manner the amount of, or delay the timing of,
payments  received on Mortgage Loans which are required to be distributed on any
Certificate  without  the  consent  of the  Holder  of  such  Certificate,  (ii)
adversely  affect  in any  material  respect  the  interest  of the  Holders  of
Certificates  of any Class or Subclass in a manner  other than as  described  in
clause (i) hereof without the consent of Holders of  Certificates  of such Class
or  Subclass  evidencing,  as  to  such  Class  or  Subclass,  Voting  Interests
aggregating  not less than 66-2/3% or (iii) reduce the  aforesaid  percentage of
Certificates  of any Class or  Subclass  the  Holders of which are  required  to
consent  to any such  amendment,  without  the  consent  of the  Holders  of all
Certificates of such Class or Subclass then outstanding.

     Notwithstanding  any  contrary  provision  of this  Agreement,  neither the
Trustee  nor the Trust  Administrator  shall  consent to any  amendment  to this
Agreement  unless it shall  have  first  received  an  Opinion of Counsel to the
effect that such  amendment will not subject the REMIC to tax or cause the Trust
Estate  to fail to  qualify  as a REMIC at any time  that any  Certificates  are
outstanding.

     Promptly  after the  execution of any  amendment  requiring  the consent of
Certificateholders,  the Trust Administrator shall furnish written  notification
of the substance of such amendment to each Certificateholder.

     It shall not be necessary for the consent of Certificateholders  under this
Section 10.01(a) to approve the particular form of any proposed  amendment,  but
it shall be sufficient if such consent shall approve the substance thereof.  The
manner of obtaining  such consents and of evidencing  the  authorization  of the
execution  thereof by  Certificateholders  shall be  subject to such  reasonable
regulations as the Trust Administrator may prescribe.

     (b)  Notwithstanding  any contrary provision of this Agreement,  the Master
Servicer may, from time to time,  amend Schedule I hereto without the consent of
any  Certificateholder,  the  Trust  Administrator  or  the  Trustee;  provided,
however,  (i) that such  amendment  does not conflict with any provisions of the
related Servicing Agreement,  (ii) that the related Servicing Agreement provides
for the remittance of each type of Unscheduled  Principal  Receipts  received by
such Servicer during the Applicable  Unscheduled Principal Receipt Period (as so
amended) related to each  Distribution Date to the Master Servicer no later than
the 24th day of the month in which such  Distribution Date occurs and (iii) that
such amendment is for the purpose of:

          (a)  changing the Applicable  Unscheduled Principal Receipt Period for
               Exhibit F-1  Mortgage  Loans to a Mid-Month  Receipt  Period with
               respect to all Unscheduled Principal Receipts; or

          (b)  changing the Applicable  Unscheduled Principal Receipt Period for
               all  Mortgage  Loans  serviced  by any  Servicer  to a  Mid-Month
               Receipt  Period  with  respect  to  Full  Unscheduled   Principal
               Receipts  and to a Prior Month  Receipt  Period  with  respect to
               Partial Unscheduled Principal Receipts.

     A copy of any  amendment  to Schedule I pursuant to this  Section  10.01(b)
shall be promptly forwarded to the Trust Administrator.

Section 10.02.    Recordation of Agreement.

     This  Agreement (or an abstract  hereof,  if  acceptable to the  applicable
recording  office) is subject to recordation in all  appropriate  public offices
for real property records in all the towns or other comparable  jurisdictions in
which any or all of the  Mortgaged  Properties  are  situated,  and in any other
appropriate  public office or elsewhere,  such recordation to be effected by the
Master Servicer and at its expense on direction by the Trust Administrator,  but
only upon direction accompanied by an Opinion of Counsel to the effect that such
recordation   materially   and   beneficially   affects  the  interests  of  the
Certificateholders.

     For the purpose of facilitating the recordation of this Agreement as herein
provided and for other purposes,  this Agreement may be executed  simultaneously
in any number of counterparts,  each of which counterparts shall be deemed to be
an  original,  and  such  counterparts  shall  constitute  but one and the  same
instrument.

Section 10.03.    Limitation on Rights of Certificateholders.

     The death or  incapacity  of any  Certificateholder  shall not  operate  to
terminate   this   Agreement   or   the   Trust   Estate,   nor   entitle   such
Certificateholder's  legal  representatives  or heirs to claim an  accounting or
take any action or  proceeding in any court for a partition or winding up of the
Trust Estate,  nor otherwise  affect the rights,  obligations and liabilities of
the parties hereto or any of them.

     Except as otherwise expressly provided herein, no Certificateholder, solely
by virtue of its status as a Certificateholder,  shall have any right to vote or
in any manner  otherwise  control  the  operation  and  management  of the Trust
Estate, or the obligations of the parties hereto,  nor shall anything herein set
forth,  or  contained  in the terms of the  Certificates,  be construed so as to
constitute the Certificateholders from time to time as partners or members of an
association, nor shall any Certificateholder be under any liability to any third
person by reason of any action taken by the parties to this  Agreement  pursuant
to any provision hereof.

     No Certificateholder,  solely by virtue of its status as Certificateholder,
shall have any right by virtue or by availing of any provision of this Agreement
to institute any suit, action or proceeding in equity or at law upon or under or
with respect to this Agreement,  unless such Holder  previously shall have given
to the Trust  Administrator  a written notice of default and of the  continuance
thereof, as hereinbefore  provided,  and unless also the Holders of Certificates
evidencing  not  less  than  25%  of  the  Voting  Interest  represented  by all
Certificates  shall have made written  request upon the Trust  Administrator  to
institute such action, suit or proceeding in its own name as Trust Administrator
hereunder  and shall have  offered to the Trust  Administrator  such  reasonable
indemnity as it may require  against the cost,  expenses and  liabilities  to be
incurred therein or thereby, and the Trust Administrator,  for 60 days after its
receipt of such notice, request and offer of indemnity,  shall have neglected or
refused to institute any such action,  suit or proceeding;  it being  understood
and intended,  and being  expressly  covenanted by each  Certificateholder  with
every other  Certificateholder and the Trust Administrator,  that no one or more
Holders of Certificates shall have any right in any manner whatever by virtue or
by availing of any provision of this  Agreement to affect,  disturb or prejudice
the  rights of the  Holders of any other of such  Certificates,  or to obtain or
seek to obtain  priority  over or  preference  to any other such  Holder,  or to
enforce any right under this Agreement, except in the manner herein provided and
for the benefit of all Certificateholders. For the protection and enforcement of
the provisions of this Section,  each and every  Certificateholder and the Trust
Administrator  shall be entitled to such relief as can be given either at law or
in equity.

Section 10.04.    Governing Law; Jurisdiction.

     This Agreement  shall be construed in accordance with the laws of the State
of  New  York  (without  regard  to  conflicts  of  laws  principles),  and  the
obligations, rights and remedies of the parties hereunder shall be determined in
accordance with such laws.

Section 10.05.    Notices.

     All demands,  notices and communications  hereunder shall be in writing and
shall be deemed to have been duly given if personally  delivered at or mailed by
certified or registered  mail,  return receipt  requested (i) in the case of the
Seller,  to  Norwest  Asset  Securities  Corporation,   7485  New  Horizon  Way,
Frederick,  Maryland 21703,  Attention:  Chief Executive Officer,  or such other
address  as may  hereafter  be  furnished  to the  Master  Servicer,  the  Trust
Administrator and the Trustee in writing by the Seller,  (ii) in the case of the
Master  Servicer,  to Norwest Bank  Minnesota,  National  Association,  7485 New
Horizon Way, Frederick,  Maryland 21703, Attention: Vice President or such other
address as may  hereafter  be furnished to the Seller and the Trustee in writing
by the Master Servicer, (iii) in the case of the Trustee, to the Corporate Trust
Office and (iv) in the case of the Trust  Administrator,  to the Corporate Trust
Office,  or such other  address as may  hereafter be furnished to the Seller and
the Master  Servicer  in writing by the Trustee or the Trust  Administrator,  in
each  case  Attention:  Corporate  Trust  Department.  Any  notice  required  or
permitted  to be mailed  to a  Certificateholder  shall be given by first  class
mail, postage prepaid, at the address of such Holder as shown in the Certificate
Register.  Any notice mailed or transmitted  within the time  prescribed in this
Agreement shall be conclusively presumed to have been duly given, whether or not
the addressee receives such notice,  provided,  however, that any demand, notice
or  communication  to or  upon  the  Seller,  the  Master  Servicer,  the  Trust
Administrator or the Trustee shall not be effective until received.

     For all purposes of this Agreement,  in the absence of actual  knowledge by
an officer of the Master  Servicer,  the Master  Servicer shall not be deemed to
have  knowledge  of any act or failure to act of any  Servicer  unless  notified
thereof in writing by the Trustee, the Trust  Administrator,  such Servicer or a
Certificateholder.

Section 10.06.    Severability of Provisions.

     If any one or more of the  covenants,  agreements,  provisions  or terms of
this  Agreement  shall be for any  reason  whatsoever  held  invalid,  then such
covenants,  agreements,  provisions or terms shall be deemed  severable from the
remaining covenants, agreements, provisions or terms of this Agreement and shall
in no way affect the validity or  enforceability of the other provisions of this
Agreement or of the Certificates or the rights of the Holders thereof.

Section 10.07.    Special Notices to Rating Agencies.

     (a) The Trust  Administrator shall give prompt notice to each Rating Agency
of the occurrence of any of the following events of which it has notice:

               (i) any amendment to this Agreement pursuant to Section 10.01(a);

               (ii) any sale or transfer of the Class B Certificates pursuant to
          Section 5.02 to an affiliate of the Seller;

               (iii) any  assignment  by the Master  Servicer  of its rights and
          delegation of its duties pursuant to Section 6.06;

               (iv) any resignation of the Master  Servicer  pursuant to Section
          6.04;

               (v) the  occurrence of any of the Events of Default  described in
          Section 7.01;

               (vi) any  notice  of  termination  given to the  Master  Servicer
          pursuant to Section 7.01;

               (vii) the  appointment  of any  successor to the Master  Servicer
          pursuant to Section 7.05; or

               (viii) the making of a final payment pursuant to Section 9.01.

     (b) The Master  Servicer  shall give prompt notice to each Rating Agency of
the occurrence of any of the following events:

               (i) the appointment of a Custodian pursuant to Section 2.02;

               (ii) the  resignation  or  removal  of the  Trustee  or the Trust
          Administrator pursuant to Section 8.08;

               (iii)  the   appointment   of  a   successor   trustee  or  trust
          administrator pursuant to Section 8.09; or

               (iv)  the  sale,  transfer  or  other  disposition  in  a  single
          transaction  of 50% or  more of the  equity  interests  in the  Master
          Servicer.

     (c) The Master Servicer shall deliver to each Rating Agency:

               (i) reports prepared pursuant to Section 3.05; and

               (ii) statements prepared pursuant to Section 4.04.

Section 10.08.    Covenant of Seller.

     The  Seller  shall  not  amend   Article  Third  of  its   Certificate   of
Incorporation without the prior written consent of each Rating Agency rating the
Certificates.

Section 10.09.    Recharacterization.

     The Parties  intend the  conveyance  by the Seller to the Trustee of all of
its right,  title and  interest in and to the  Mortgage  Loans  pursuant to this
Agreement to constitute a purchase and sale and not a loan.  Notwithstanding the
foregoing,  to the extent that such  conveyance is held not to constitute a sale
under  applicable  law, it is intended that this  Agreement  shall  constitute a
security  agreement under  applicable law and that the Seller shall be deemed to
have  granted to the Trustee a first  priority  security  interest in all of the
Seller's right, title and interest in and to the Mortgage Loans.


<PAGE>

ARTICLE XI

TERMS FOR CERTIFICATES

Section 11.01.    Class A Fixed Pass-Through Rate.

     The Class A Fixed Pass-Through Rate is 7.000% per annum.

Section 11.02.    Cut-Off Date.

     The Cut-Off Date for the Certificates is December 1, 1997.

Section 11.03.    Cut-Off Date Aggregate Principal Balance.

     The Cut-Off Date Aggregate Principal Balance is $349,586,561.61.

Section 11.04.    Original Class A Percentage.

     The Original Class A Percentage is 95.74862974%.

Section 11.05.    Original Class A Subclass Principal Balances.

     As to the  following  Subclasses  of  Class  A  Certificates,  the  Class A
Subclass Principal Balance of such Subclass as of the Cut-Off Date, as follows:

                                                    Original Class A
                    Class A Subclass           Subclass Principal Balance

                      Class A-1                  $ 22,500,000.00
                      Class A-2                  $211,230,000.00
                      Class A-3                  $  2,926,000.00
                      Class A-4                  $ 23,500,000.00
                      Class A-5                  $ 11,500,000.00
                      Class A-6                  $  2,400,000.00
                      Class A-7                  $ 25,463,357.00
                      Class A-8                  $ 35,100,000.00
                      Class A-PO                 $    109,542.55
                      Class A-R                  $        100.00

Section 11.06.    Original Class A Non-PO Principal Balance.

     The Original Class A Non-PO Principal Balance is $334,619,457.00.

Section 11.07.    Original Subordinated Percentage.

     The Original Subordinated Percentage is 4.25137026%.

Section 11.08.    Original Class M Percentage.

     The Original Class M Percentage is 1.25015373%.

Section 11.09.    Original Class M Principal Balance.

     The Original Class M Principal Balance is $4,369,000.00.

Section 11.10     Original Class M Fractional Interest.

     The Original Class M Fractional Interest is 3.00121652%.

Section 11.11     Original Class B-1 Percentage.

     The Original Class B-1 Percentage is 1.60067750%.

Section 11.12.    Original Class B-2 Percentage.

     The Original Class B-2 Percentage is 0.55025077%.

Section 11.13.    Original Class B-3 Percentage.

     The Original Class B-3 Percentage is 0.34995148%.

Section 11.14.    Original Class B-4 Percentage.

     The Original Class B-4 Percentage is 0.20001315%.

Section 11.15.    Original Class B-5 Percentage.

     The Original Class B-5 Percentage is 0.30032363%.

Section 11.16.    Original Class B Principal Balance.

     The Original Class B Principal Balance is $10,488,562.06.

Section 11.17.    Original Class B Subclass Principal Balances.

     As to any Class B Certificate,  the Class B Subclass  Principal  Balance of
such Subclass as of the Cut-Off Date, is as follows:

                                                Original Class B
                    Class B Subclass        Subclass Principal Balance
                      Class B-1                 $5,594,000.00
                      Class B-2                 $1,923,000.00
                      Class B-3                 $1,223,000.00
                      Class B-4                 $  699,000.00
                      Class B-5                 $1,049,562.06

Section 11.18.    Original Class B-1 Fractional Interest.

     The Original Class B-1 Fractional Interest is 1.40053903%.

Section 11.19.    Original Class B-2 Fractional Interest.

     The Original Class B-2 Fractional Interest is 0.85028825%.

Section 11.20.    Original Class B-3 Fractional Interest.

     The Original Class B-3 Fractional Interest is 0.50033677%.

Section 11.21.    Original Class B-4 Fractional Interest.

     The Original Class B-4 Fractional Interest is 0.30032362%.

Section 11.22.    Closing Date.

     The Closing Date is December 23, 1997.

Section 11.23.    Right to Purchase.

     The right of the Seller to purchase all of the Mortgage  Loans  pursuant to
Section  9.01 hereof  shall be  conditioned  upon the Pool  Scheduled  Principal
Balance of the Mortgage Loans being less than $34,958,656.16 (10% of the Cut-Off
Date Aggregate Principal Balance) at the time of any such purchase.

Section 11.24.    Wire Transfer Eligibility.

     With respect to the Class A Certificates  (other than the Class A-PO, Class
A-WIO,  and  Class  A-R   Certificates),   Class  M  Certificates  and  Class  B
Certificates  the  minimum  Denomination  eligible  for  wire  transfer  on each
Distribution Date is $500,000. With respect to the Class A-WIO Certificates, the
minimum Denomination eligible for wire transfer on each Distribution Date is 25%
Percentage Interest.  The Class A-PO and Class A-R Certificates are not eligible
for wire transfer.

Section 11.25.    Single Certificate.

     A Single Certificate for each Subclass of Class A Certificates  (other than
the Class A-3, Class A-6,  Class A-7,  Class A-WIO and Class A-R  Certificates),
the Class M Certificates and the Class B Certificates (other than the Class B-3,
Class B-4, and Class B-5  Certificates)  represents a $100,000  Denomination.  A
Single  Certificate  for the Class  A-3,  Class  A-6 and Class A-7  Certificates
represents  a $1,000  Denomination.  A Single  Certificate  for the Class  A-WIO
Certificates  represents a  Denomination  of 25% Percentage  Interest.  A Single
Certificate  for the Class A-R  Certificate  represents a $100  Denomination.  A
Single  Certificate  for each  Subclass  of Class B  Certificates  represents  a
$250,000 Denomination.

Section 11.26.    Servicing Fee Rate.

     The rate used to calculate the Servicing Fee is equal to 0.250% per annum.

Section 11.27.    Master Servicing Fee Rate.

     The rate used to calculate the Master  Servicing Fee for each Mortgage Loan
is 0.016% per annum.



<PAGE>





     IN  WITNESS  WHEREOF,   the  Seller,   the  Master   Servicer,   the  Trust
Administrator  and the Trustee  have caused  their names to be signed  hereto by
their respective officers thereunto duly authorized,  all as of the day and year
first above written.

                               NORWEST ASSET SECURITIES CORPORATION
                                 as Seller

                               By:
                                     Name:
                                     Title:

                               NORWEST BANK MINNESOTA, NATIONAL
                               ASSOCIATION
                                 as Master Servicer

                               By:
                                     Name:
                                     Title:

                               FIRST UNION NATIONAL BANK
                                 as Trust Administrator

                               By:
                                     Name:
                                     Title:

Attest:
By:
Name:
Title:


                               UNITED STATES TRUST COMPANY OF NEW YORK
                                 as Trustee

                               By:
                                     Name:
                                     Title:

                               By:
                                     Name:
                                     Title:



<PAGE>



STATE OF NEW YORK                   )
                                        ss.:
COUNTY OF NEW YORK                  )

                  On this 23rd day of December, 1997, before me, a notary public
in and for the State of New York,  personally  Patrick Greene,  known to me who,
being by me duly  sworn,  did  depose  and say  that he  resides  at  Frederick,
Maryland;  that he is an Assistant  Vice  President of Norwest Asset  Securities
Corporation,  a Delaware  corporation,  one of the  parties  that  executed  the
foregoing instrument;  and that he signed his name thereto by order of the Board
of Directors of said corporation.

- -------------------------
Notary Public

[NOTARIAL SEAL]

<PAGE>



STATE OF NEW YORK                   )
                                        ss.:
COUNTY OF NEW YORK                  )

                  On this 23rd day of December, 1997, before me, a notary public
in and for the State of New York,  personally  appeared  Edward M.  Frere,  Jr.,
known to me who,  being by me duly sworn,  did depose and say that he resides at
Frederick,  Maryland;  that he is a Vice  President of Norwest  Bank  Minnesota,
National  Association,  a national banking association,  one of the parties that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said corporation.

- -------------------------
Notary Public

[NOTARIAL SEAL]

<PAGE>



STATE OF NORTH CAROLINA          )
                                       ss.:
COUNTY OF                                   )

                  On this 23rd day of December, 1997, before me, a notary public
in and for the State of North Carolina, personally appeared ___________________,
known to me who, being by me duly sworn, did depose and say that s/he resides at
_________________,  North Carolina; that s/he is a ____________________ of First
Union National  Bank, a national  banking  association,  one of the parties that
executed the foregoing instrument;  and that s/he signed his/her name thereto by
order of the Board of Directors of said corporation.





- -------------------------
Notary Public

[NOTARIAL SEAL]



<PAGE>



STATE OF NORTH CAROLINA          )
                                  ss.:
COUNTY OF                        )

                  On this 23rd day of December, 1997, before me, a notary public
in   and   for   the   State   of   North    Carolina,    personally    appeared
_____________________,  known to me who, being by me duly sworn,  did depose and
say  that  he  resides  at  __________________,  North  Carolina;  that  he is a
_____________________   of  First  Union  National  Bank,  a  national   banking
association, one of the parties that executed the foregoing instrument; and that
s/he  signed  his  name  thereto  by order of the  Board  of  Directors  of said
corporation.

- -------------------------
Notary Public

[NOTARIAL SEAL]



<PAGE>



STATE OF NEW YORK               )
                                    ss.:
COUNTY OF                       )

                  On this 23rd day of December, 1997, before me, a notary public
in and for the State of New York, personally appeared ___________________, known
to me who,  being by me duly  sworn,  did  depose  and say that s/he  resides at
________________, New York; that s/he is a ____________________ of United States
Trust Company of New York, a  ________________________,  one of the parties that
executed the foregoing instrument;  and that s/he signed her/his name thereto by
order of the Board of Directors of said corporation.

- -------------------------
Notary Public

[NOTARIAL SEAL]



<PAGE>



STATE OF NEW YORK               )
                                    ss.:
COUNTY OF                       )

                  On this 23rd day of December, 1997, before me, a notary public
in and for the State of New York, personally appeared ___________________, known
to me who,  being by me duly  sworn,  did  depose  and say that s/he  resides at
________________, New York; that s/he is a ____________________ of United States
Trust Company of New York, a  ________________________,  one of the parties that
executed the foregoing instrument;  and that s/he signed her/his name thereto by
order of the Board of Directors of said corporation.





- -------------------------
Notary Public

[NOTARIAL SEAL]


<PAGE>






                                   SCHEDULE I

                      Norwest Asset Securities Corporation,
               Mortgage Pass-Through Certificates, Series 1997-21
                 Applicable Unscheduled Principal Receipt Period
<TABLE>
<CAPTION>
<S>                                                       <C>                             <C>
                                                          Full Unscheduled                Partial Unscheduled
Servicer                                                  Principal Receipts              Principal Receipts

Norwest Mortgage, Inc. (Exhibit F-1)                      Prior Month                     Prior Month

Norwest Mortgage, Inc. (Exhibit F-2)                      Mid-Month                       Mid-Month

FT Mortgage Companies                                     Mid-Month                       Prior Month

First Union Mortgage Corporation                          Prior Month                     Prior Month

Suntrust Mortgage, Inc.                                   Prior Month                     Prior Month

First Bank National Association                           Prior Month                     Prior Month

The Huntington Mortgage Company                           Prior Month                     Prior Month

Farmers State Bank & Trust                                Mid-Month                       Prior Month

National City Mortgage Company                            Prior Month                     Prior Month
</TABLE>




<PAGE>
                                   EXHIBIT A-1
                     [FORM OF FACE OF CLASS A-1 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-1

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                       Cut-Off Date:   December 1, 1997

CUSIP No.:                            First Distribution Date:  January 26, 1998


Percentage Interest evidenced        Denomination: $
by this Certificate:  %




<PAGE>




                  THIS   CERTIFIES  THAT   ___________________________   is  the
registered  owner of the Percentage  Interest  evidenced by this  Certificate in
monthly distributions to the Holders of Class A-1 Certificates with respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  and which may  include  loans  secured by shares  issued by  cooperative
housing corporations (the "Mortgage Loans"),  formed by Norwest Asset Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-1 Certificates required to be distributed to
Holders  of  Class  A-1  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-1 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-1 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                            First Union National Bank,
                                              Trust Administrator

                                            By____________________________
                                              Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>

                                   EXHIBIT A-2
                     [FORM OF FACE OF CLASS A-2 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-2

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                      Cut-Off Date:   December 1, 1997

CUSIP No.:                           First Distribution Date:  January 26, 1998


Percentage Interest evidenced        Denomination: $
by this Certificate:  %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  Class  A-2  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-2 Certificates required to be distributed to
Holders  of  Class  A-2  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-2 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-2 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                      First Union National Bank,
                                        Trust Administrator

                                      By____________________________
                                        Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>

                                   EXHIBIT A-3
                     [FORM OF FACE OF CLASS A-3 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-3

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                      Cut-Off Date:   December 1, 1997

CUSIP No.:                           First Distribution Date:  January 26, 1998


Percentage Interest evidenced        Denomination: $
by this Certificate:  %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  Class  A-3  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-3 Certificates required to be distributed to
Holders  of  Class  A-3  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-3 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-3 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                     First Union National Bank,
                                       Trust Administrator

                                     By____________________________
                                       Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>

                                   EXHIBIT A-4
                     [FORM OF FACE OF CLASS A-4 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-4

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date:   December 1, 1997

CUSIP No.:                          First Distribution Date:  January 26, 1998


Percentage Interest evidenced      Denomination: $
by this Certificate:  %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  Class  A-4  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-4 Certificates required to be distributed to
Holders  of  Class  A-4  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-4 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-4 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                        First Union National Bank,
                                          Trust Administrator

                                        By____________________________
                                          Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>

                                   EXHIBIT A-5
                     [FORM OF FACE OF CLASS A-5 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-5

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                       Cut-Off Date:   December 1, 1997

CUSIP No.:                            First Distribution Date:  January 26, 1998


Percentage Interest evidenced        Denomination: $
by this Certificate:  %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  Class  A-5  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-5 Certificates required to be distributed to
Holders  of  Class  A-5  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-5 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-5 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                        First Union National Bank,
                                          Trust Administrator

                                        By____________________________
                                          Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>


                                   EXHIBIT A-6
                     [FORM OF FACE OF CLASS A-6 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-6

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                   Cut-Off Date:   December 1, 1997

CUSIP No.:                        First Distribution Date:  January 26, 1998


Percentage Interest evidenced     Denomination: $
by this Certificate:  %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  Class  A-6  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-6 Certificates required to be distributed to
Holders  of  Class  A-6  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-6 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-6 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

                  This  Certificate is issued on December 23, 1997, and based on
its  issue  price  of  97.36528%,  including  accrued  interest,  and  a  stated
redemption price at maturity equal to its initial principal  balance,  is issued
with original issue discount  ("OID") for federal income tax purposes.  Assuming
that this  Certificate  pays in accordance with projected cash flows  reflecting
the prepayment  assumption of 250% SPA (as defined in the Prospectus  Supplement
dated  December  16, 1997 with  respect to the offering of the Class A -1, Class
A-2,  Class A-3, Class A-4, Class A-5, Class A-6, Class A-7, Class A-8 and Class
A-R  Certificates,  the  Class M  Certificates  and the  Class B-1 and Class B-2
Certificates)  used  to  price  this  Certificate:  (i) the  amount  of OID as a
percentage of the initial principal balance of this Certificate is approximately
2.63472222%;  and  (ii)  the  annual  yield  to  maturity  of this  Certificate,
compounded  monthly,  is  approximately  7.36%.  There is no short first accrual
period.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                       First Union National Bank,
                                         Trust Administrator

                                       By____________________________
                                         Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>


                                   EXHIBIT A-7
                     [FORM OF FACE OF CLASS A-7 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-7

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                   Cut-Off Date:   December 1, 1997

CUSIP No.:                        First Distribution Date:  January 26, 1998


Percentage Interest evidenced     Denomination: $
by this Certificate:  %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  Class  A-7  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-7 Certificates required to be distributed to
Holders  of  Class  A-7  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-7 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-7 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                       First Union National Bank,
                                         Trust Administrator

                                       By____________________________
                                         Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>

                                   EXHIBIT A-8
                     [FORM OF FACE OF CLASS A-8 CERTIFICATE]

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  TRUST   ADMINISTRATOR  OR  ITS  AGENT  FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21 CLASS A-8

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                  Cut-Off Date:   December 1, 1997

CUSIP No.:                       First Distribution Date:  January 26, 1998


Percentage Interest evidenced    Denomination: $
by this Certificate:  %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  Class  A-8  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-8 Certificates required to be distributed to
Holders  of  Class  A-8  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-8 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-8 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                   First Union National Bank,
                                     Trust Administrator

                                   By____________________________
                                     Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer




<PAGE>


                                
                                  EXHIBIT A-WIO
                    [FORM OF FACE OF CLASS A-WIO CERTIFICATE]


THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON  THAT HAS NOT  DELIVERED A  REPRESENTATION  LETTER  STATING  THAT THE
TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN OR OTHER  RETIREMENT  ARRANGEMENT
SUBJECT TO TITLE I OF THE EMPLOYEE  RETIREMENT  INCOME  SECURITY ACT OF 1974, AS
AMENDED  ("ERISA"),  OR SECTION  4975 OF THE INTERNAL  REVENUE CODE OF 1986,  AS
AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL LAW  WHICH  IS, TO A  MATERIAL
EXTENT,  SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY,
A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.



<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 1997-21 CLASS A-WIO

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

Certificate No.                      Cut-Off Date:   December 1, 1997

CUSIP No.:                           First Distribution Date:  January 26, 1998

Percentage Interest evidenced
by this Certificate:      %



<PAGE>



     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders of Class  A-WIO  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-WIO Certificates  required to be distributed
to Holders of Class A-WIO  Certificates on such  Distribution  Date,  subject to
adjustment  in certain  events as  specified in the  Agreement.  The Class A-WIO
Certificates  will not be entitled  to  distributions  in respect of  principal.
Interest  will  accrue on the Class A-WIO  Certificates  during each month in an
amount  equal to the  product  of (A)  1/12th of (i) the  Weighted  Average  Net
Mortgage  Interest Rate of the Premium  Mortgage  Loans on the first day of such
month  minus  (ii)  7.000%  and (B) the Class  A-WIO  Notional  Amount as of the
related  Distribution  Date.  The  amount  of  interest  which  accrues  on this
Certificate  in any month  will be  subject  to  reduction  with  respect to any
Non-Supported  Interest  Shortfall and the interest  portion of certain Realized
Losses allocated to the Class A-WIO Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above,  the final  distribution on this Certificate will be
made  after  due  notice  of the  pendency  of such  distribution  and only upon
presentation and surrender of this Certificate at the office or agency specified
by the Trust Administrator for that purpose in the notice of final distribution.

     No transfer of a Class A-WIO  Certificate will be made unless such transfer
is exempt from the  registration  requirements of the Securities Act of 1933, as
amended,  and any applicable state securities laws or is made in accordance with
said Act and laws.  In the event that such a  transfer  is desired to be made by
the Holder hereof,  (i) the transferee will be required to execute an investment
letter in the form described in the Agreement and (ii) if such transfer is to be
made within  three  years from the later of (a) the date of initial  issuance of
the  Certificates  or (b) the last  date on which the  Seller  or any  affiliate
thereof was a Holder of the Certificates proposed to be transferred,  and unless
such transfer is made in reliance on Rule 144A of the Securities Act of 1933, as
amended, the Trust Administrator or the Seller may require the Holder to deliver
an opinion of counsel  acceptable to and in form and substance  satisfactory  to
the Trust  Administrator and the Seller that such transfer is exempt (describing
the applicable  exemption and the basis therefor) from or is being made pursuant
to the registration  requirements of the Securities Act of 1933, as amended, and
of any  applicable  statute of any state.  The Holder hereof  desiring to effect
such transfer shall, and does hereby agree to, indemnify the Trustee,  the Trust
Administrator,  the Seller, the Master Servicer,  and any Paying Agent acting on
behalf of the Trust  Administrator  against any liability that may result if the
transfer  is not so exempt or is not made in  accordance  with such  Federal and
state laws. In connection with any such transfer,  the Trust  Administrator will
also  require  (i) a  representation  letter,  in the form as  described  in the
Agreement, stating that the transferee is not a Plan and is not acting on behalf
of a Plan or using the assets of a Plan to effect such  purchase or (ii) if such
transferee  is a Plan,  or is acting on behalf of or using the assets of a Plan,
(a) an opinion of counsel  acceptable to and in form and substance  satisfactory
to the Trust  Administrator  and the Seller with respect to certain  matters and
(b) such other  documentation  as the Seller or the Master Servicer may require,
as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  is issued on  December  23,  1997,  at an issue price of
2.10991% of the initial Class A-WIO Notional Amount, including accrued interest,
and a stated  redemption  price at maturity equal to all interest  distributions
hereon,  and is issued with original issue  discount  ("OID") for federal income
tax  purposes.  Assuming  (a) that  this  Certificate  pays in  accordance  with
projected  cash  flows  reflecting  the  prepayment  assumption  of 250% SPA (as
defined in the Prospectus Supplement dated December 16, 1997 with respect to the
offering of the Class A-1,  Class A-2,  Class A-3,  Class A-4,  Class A-5, Class
A-6,  Class  A-7,  Class  A-8  and  Class  A-R  Certificates,  and  the  Class M
Certificates  and the Class B-1 and Class B-2  Certificates)  used to price this
Certificate and (b) that the interest rate at which distributions of interest on
this  Certificate  actually  will  be made  will be  determined  as  though  the
pass-through rate on this Certificate  applicable to the first Distribution Date
will not change thereafter: (i) the amount of OID as a percentage of the initial
Class A-WIO Notional Amount is  approximately  1.47504095%;  and (ii) the annual
yield to maturity of this  Certificate,  compounded  monthly,  is  approximately
12.46%. There is no short first accrual period.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                    First Union National Bank,
                                      Trust Administrator

                                    By____________________________
                                      Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator
By ________________________
   Authorized Officer

<PAGE>


                                  EXHIBIT A-PO
                    [FORM OF FACE OF CLASS A-PO CERTIFICATE]


THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON  THAT HAS NOT  DELIVERED A  REPRESENTATION  LETTER  STATING  THAT THE
TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN OR OTHER  RETIREMENT  ARRANGEMENT
SUBJECT TO TITLE I OF THE EMPLOYEE  RETIREMENT  INCOME  SECURITY ACT OF 1974, AS
AMENDED  ("ERISA")  OR SECTION 4975 OF THE  INTERNAL  REVENUE  CODE OF 1986,  AS
AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL LAW  WHICH  IS, TO A  MATERIAL
EXTENT,  SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY,
A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.




<PAGE>




                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 1997-21, CLASS A-PO

            evidencing an interest in a pool of fixed interest rate,
                              conventional, monthly
                    pay, fully amortizing, first lien, one-
                      to four-family residential mortgage
                     loans, which may include loans secured
                    by shares issued by cooperative housing
                             corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:   December 1, 1997

CUSIP No.:                         First Distribution Date:  January 26, 1998

Percentage Interest evidenced      Denomination:  $
by this Certificate: %




<PAGE>




     THIS CERTIFIES THAT  ___________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of Class  A-PO  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the  Percentage  Interest  evidenced  by this  Certificate  and the  Class  A-PO
Distribution  Amount  required  to be  distributed  to  Holders  of  Class  A-PO
Certificates on such Distribution  Date, subject to adjustment in certain events
as specified in the Agreement.  The Class A-PO Certificates will not be entitled
to distributions in respect of interest.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate  Register.  Notwithstanding the
above,  the final  distribution  in reduction of the  principal  balance of this
Certificate  will be made after due notice of the pendency of such  distribution
and only upon  presentation  and surrender of this  Certificate at the office or
agency  specified  by the  Trustee  for  that  purpose  in the  notice  of final
distribution.

                  No  transfer of a Class A-PO  Certificate  will be made unless
such transfer is exempt from the registration requirements of the Securities Act
of 1933, as amended,  and any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities Act of 1933, as amended,  the Trust  Administrator  or the Seller may
require  the Holder to deliver an opinion of counsel  acceptable  to and in form
and substance  satisfactory to the Trust  Administrator and the Seller that such
transfer is exempt (describing the applicable  exemption and the basis therefor)
from  or is  being  made  pursuant  to  the  registration  requirements  of  the
Securities Act of 1933, as amended,  and of any applicable statute of any state.
The Holder hereof desiring to effect such transfer shall,  and does hereby agree
to,  indemnify  the Trustee,  the Trust  Administrator,  the Seller,  the Master
Servicer,  and any  Paying  Agent  acting on  behalf of the Trust  Administrator
against any liability that may result if the transfer is not so exempt or is not
made in accordance with such Federal and state laws. In connection with any such
transfer, the Trust Administrator will also require (i) a representation letter,
in the form as described in the Agreement,  stating that the transferee is not a
Plan and is not  acting on  behalf  of a Plan or using  the  assets of a Plan to
effect  such  purchase  or (ii) if such  transferee  is a Plan,  or is acting on
behalf of or using the assets of a Plan, (a) an opinion of counsel acceptable to
and in form and substance satisfactory to the Trust Administrator and the Seller
with respect to certain matters and (b) such other  documentation  as the Seller
or the Master Servicer may require, as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  is issued on  December  23,  1997,  at an issue price of
55.52000%  and a stated  redemption  price  at  maturity  equal  to its  initial
principal  balance,  and is issued  with  original  issue  discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 250% SPA (as
defined in the Prospectus Supplement dated December 16, 1997 with respect to the
offering of the Class A-1,  Class A-2,  Class A-3,  Class A-4,  Class A-5, Class
A-6,  Class  A-7,  Class  A-8  and  Class  A-R  Certificates,  and  the  Class M
Certificates  and the Class B-1 and Class B-2  Certificates)  used to price this
Certificate:  (i) the amount of OID as a  percentage  of the  initial  principal
balance of this Certificate is approximately  44.48000000%;  and (ii) the annual
yield to maturity of this  Certificate,  compounded  monthly,  is  approximately
10.79%. There is no short first accrual period.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                   First Union National Bank,
                                     Trust Administrator

                                   By____________________________
                                     Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator
By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT A-R
                     [Form of Face of Class A-R Certificate]

FOR U.S. FEDERAL INCOME TAX PURPOSES,  THIS CERTIFICATE IS A "RESIDUAL INTEREST"
IN A "REAL  ESTATE  MORTGAGE  INVESTMENT  CONDUIT" AS THOSE  TERMS ARE  DEFINED,
RESPECTIVELY,  IN SECTIONS  860G(a)(2) AND 860D OF THE INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE "CODE").  A TRANSFEREE OF THIS CERTIFICATE,  BY ACCEPTANCE
HEREOF,  IS  DEEMED  TO  HAVE  ACCEPTED  THIS  CERTIFICATE  SUBJECT  TO  CERTAIN
RESTRICTIONS ON TRANSFERABILITY,  AS SET FORTH IN SECTION 5.02(d) OF THE POOLING
AND  SERVICING  AGREEMENT,  AND SHALL BE REQUIRED TO FURNISH AN AFFIDAVIT TO THE
TRANSFEROR AND THE TRUST  ADMINISTRATOR  TO THE EFFECT THAT, AMONG OTHER THINGS,
IT IS NOT A DISQUALIFIED  ORGANIZATION,  AS SUCH TERM IS DEFINED IN CODE SECTION
860E(e)(5),  AN AGENT  (INCLUDING A BROKER,  NOMINEE OR OTHER  MIDDLEMAN)  FOR A
DISQUALIFIED  ORGANIZATION  OR A  NON-PERMITTED  FOREIGN  HOLDER,  AS DEFINED IN
SECTION  5.02(d) OF THE POOLING AND  SERVICING  AGREEMENT  AND TO HAVE AGREED TO
SUCH  AMENDMENTS  TO THE POOLING AND  SERVICING  AGREEMENT AS MAY BE REQUIRED TO
FURTHER EFFECTUATE THE RESTRICTIONS ON TRANSFERS TO DISQUALIFIED  ORGANIZATIONS,
AGENTS THEREOF OR NON-PERMITTED FOREIGN HOLDERS.

THE HOLDER OF THIS CLASS A-R  CERTIFICATE,  BY ACCEPTANCE  HEREOF,  IS DEEMED TO
HAVE  AGREED TO THE  DESIGNATION  OF THE MASTER  SERVICER AS ITS AGENT TO ACT AS
"TAX  MATTERS  PERSON" OF THE REMIC TO PERFORM THE  FUNCTIONS  OF A "TAX MATTERS
PARTNER" FOR  PURPOSES OF  SUBCHAPTER C OF CHAPTER 63 OF SUBTITLE F OF THE CODE,
OR, IF SO REQUESTED BY THE MASTER SERVICER,  TO ACT AS TAX MATTERS PERSON OF THE
REMIC.

THIS  CERTIFICATE  MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON WHICH IS
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT  ARRANGEMENT  SUBJECT TO TITLE I OF
THE EMPLOYEE  RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED  ("ERISA"),  OR
SECTION 4975 OF THE CODE OR A GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA SUBJECT TO ANY FEDERAL, STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT,
SIMILAR  TO THE  FOREGOING  PROVISIONS  OF ERISA OR THE  CODE  (COLLECTIVELY,  A
"PLAN"), OR ANY PERSON ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.






<PAGE>




                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21, CLASS A-R


                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by


                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                      Cut-Off Date:   December 1, 1997

CUSIP No.:                           First Distribution Date:  January 26, 1998

Percentage Interest evidenced        Denomination:  $
by this Certificate: 100%



<PAGE>



     THIS CERTIFIES THAT  __________________________  is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holder of the Class  A-R  Certificate  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-R Certificate  required to be distributed to
the Holders of the Class A-R Certificate on such Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
will not commence on the first Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-R Certificate  applicable to each  Distribution  Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-R Certificate, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate  Register.  Notwithstanding the
above, the final  distribution on this Certificate will be made after due notice
of the pendency of such distribution and only upon presentation and surrender of
this  Certificate at the office or agency  specified by the Trust  Administrator
for that purpose in the notice of final distribution.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                First Union National Bank,
                                  Trust Administrator


                                By____________________________
                                  Authorized Officer

Countersigned:

First Union National Bank,
  Trust Administrator

By ________________________
   Authorized Officer



<PAGE>


                               
                                   EXHIBIT B-1
                     [FORM OF FACE OF CLASS B-1 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AND THE CLASS M CERTIFICATES AS DESCRIBED IN THE POOLING AND SERVICING AGREEMENT
REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."



<PAGE>





                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21, CLASS B-1

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      
                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:   December 1, 1997

CUSIP No.:                         First Distribution Date:  January 26, 1998

Percentage Interest evidenced      Denomination:  $
by this Certificate: %



<PAGE>



     THIS CERTIFIES THAT ____________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders of the Class B-1  Certificates  with  respect to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates  and the Class M Certificates as specified in
the Agreement,  any Class B-1 Distribution  Amount required to be distributed to
Holders  of  Class  B-1  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-1 Certificates  applicable to each Distribution Date will be
7.000% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-1 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     No  transfer  of a Class B-1  Certificate  will be made  unless  the Holder
hereof   desiring  to  make  any  such  transfer  shall  deliver  to  the  Trust
Administrator  (i) a  representation  letter,  in the form as  described  in the
Agreement,  stating  either  (a)  that the  transferee  is not a Plan and is not
acting on behalf of a Plan or using the assets of a Plan to effect such purchase
or (b) subject to certain conditions described in the Agreement, that the source
of funds used to purchase  this  Certificate  is an "insurance  company  general
account,"  or (ii) if such  transferee  is a Plan,  or is acting on behalf of or
using the assets of a Plan, (a) an opinion of counsel  acceptable to and in form
and  substance  satisfactory  to the Trust  Administrator  and the  Seller  with
respect to certain matters and (b) such other documentation as the Seller or the
Master Servicer may require, as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                    First Union National Bank,
                                      Trust Administrator

                                    By____________________________
                                      Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ________________________
   Authorized Officer


<PAGE>

                                   EXHIBIT B-2
                     [FORM OF FACE OF CLASS B-2 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE  CLASS M  CERTIFICATES  AND THE  CLASS  B-1  CERTIFICATES  AS
DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."



<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21, CLASS B-2

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY ANY
GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                   Cut-Off Date:   December 1, 1997

CUSIP No.:                        First Distribution Date:  January 26, 1998

Percentage Interest evidenced     Denomination:  $
by this Certificate: %



<PAGE>



     THIS CERTIFIES THAT ____________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders of the Class B-2  Certificates  with  respect to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
of Class B Certificates  bearing a lower  numerical  designation as specified in
the Agreement,  any Class B-2 Distribution  Amount required to be distributed to
Holders  of  Class  B-2  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-2 Certificates  applicable to each Distribution Date will be
7.000% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-2 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     No  transfer  of a Class B-2  Certificate  will be made  unless  the Holder
hereof   desiring  to  make  any  such  transfer  shall  deliver  to  the  Trust
Administrator  (i) a  representation  letter,  in the form as  described  in the
Agreement,  stating  either  (a)  that the  transferee  is not a Plan and is not
acting on behalf of a Plan or using the assets of a Plan to effect such purchase
or (b) subject to certain conditions described in the Agreement, that the source
of funds used to purchase  this  Certificate  is an "insurance  company  general
account,"  or (ii) if such  transferee  is a Plan,  or is acting on behalf of or
using the assets of a Plan, (a) an opinion of counsel  acceptable to and in form
and  substance  satisfactory  to the Trust  Administrator  and the  Seller  with
respect to certain matters and (b) such other documentation as the Seller or the
Master Servicer may require, as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                   First Union National Bank,
                                     Trust Administrator

                                   By____________________________
                                     Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ________________________
   Authorized Officer


<PAGE>

                                   EXHIBIT B-3
                     [FORM OF FACE OF CLASS B-3 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES, THE CLASS M CERTIFICATES, THE CLASS B-1 CERTIFICATES AND THE CLASS
B-2 CERTIFICATES AS DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO
HEREIN.

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."



<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21, CLASS B-3

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                   Cut-Off Date:   December 1, 1997

CUSIP No.:                        First Distribution Date:  January 26, 1998

Percentage Interest evidenced     Denomination:  $
by this Certificate: %



<PAGE>



     THIS CERTIFIES THAT ____________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders of the Class B-3  Certificates  with  respect to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
of Class B Certificates  bearing a lower  numerical  designation as specified in
the Agreement,  any Class B-3 Distribution  Amount required to be distributed to
Holders  of  Class  B-3  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-3 Certificates  applicable to each Distribution Date will be
7.000% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-3 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     No transfer of a Class B-3 Certificate will be made unless such transfer is
exempt from the  registration  requirements  of the  Securities  Act of 1933, as
amended,  and any applicable state securities laws or is made in accordance with
said Act and laws.  In the event that such a  transfer  is desired to be made by
the Holder hereof,  (i) the transferee will be required to execute an investment
letter in the form described in the Agreement and (ii) if such transfer is to be
made within  three  years from the later of (a) the date of initial  issuance of
the  Certificates  or (b) the last  date on which the  Seller  or any  affiliate
thereof was a Holder of the Certificates proposed to be transferred,  and unless
such transfer is made in reliance on Rule 144A of the Securities Act of 1933, as
amended, the Trust Administrator or the Seller may require the Holder to deliver
an opinion of counsel  acceptable to and in form and substance  satisfactory  to
the Trust  Administrator and the Seller that such transfer is exempt (describing
the applicable  exemption and the basis therefor) from or is being made pursuant
to the registration  requirements of the Securities Act of 1933, as amended, and
of any  applicable  statute of any state.  The Holder hereof  desiring to effect
such transfer shall, and does hereby agree to, indemnify the Trustee,  the Trust
Administrator,  the Seller, the Master Servicer,  and any Paying Agent acting on
behalf of the Trust  Administrator  against any liability that may result if the
transfer  is not so exempt or is not made in  accordance  with such  Federal and
state laws. In connection with any such transfer,  the Trust  Administrator will
also  require  (i) a  representation  letter,  in the form as  described  in the
Agreement,  stating  either  (a)  that the  transferee  is not a Plan and is not
acting on behalf of a Plan or using the assets of a Plan to effect such purchase
or (b) subject to certain conditions described in the Agreement, that the source
of funds used to purchase  this  Certificate  is an "insurance  company  general
account,"  or (ii) if such  transferee  is a Plan,  or is acting on behalf of or
using the assets of a Plan, (a) an opinion of counsel  acceptable to and in form
and  substance  satisfactory  to the Trust  Administrator  and the  Seller  with
respect to certain matters and (b) such other documentation as the Seller or the
Master Servicer may require, as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  is issued on December 23,  1997,  and based on its issue
price of 87.92778%, including accrued interest, and a stated redemption price at
maturity equal to its initial principal  balance,  is issued with original issue
discount ("OID") for federal income tax purposes. Assuming that this Certificate
pays  in  accordance  with  projected  cash  flows   reflecting  the  prepayment
assumption of 250% SPA (as defined in the Prospectus  Supplement  dated December
16, 1997 with  respect to the offering of the Class A-1,  Class A-2,  Class A-3,
Class  A-4,   Class  A-5,  Class  A-6,  Class  A-7,  Class  A-8  and  Class  A-R
Certificates,  the  Class  M  Certificates  and the  Class  B-1  and  Class  B-2
Certificates)  used  to  price  this  Certificate:  (i) the  amount  of OID as a
percentage of the initial principal balance of this Certificate is approximately
12.07222222%;  and  (ii)  the  annual  yield to  maturity  of this  Certificate,
compounded  monthly,  is  approximately  8.78%.  There is no short first accrual
period.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                     First Union National Bank,
                                       Trust Administrator

                                     By____________________________
                                       Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ________________________
   Authorized Officer


<PAGE>

                                   EXHIBIT B-4
                     [FORM OF FACE OF CLASS B-4 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS M CERTIFICATES,  THE CLASS B-1 CERTIFICATES,  THE CLASS
B-2  CERTIFICATES AND THE CLASS B-3 CERTIFICATES AS DESCRIBED IN THE POOLING AND
SERVICING AGREEMENT REFERRED TO HEREIN.

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE").  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."



<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21, CLASS B-4

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                   Cut-Off Date:   December 1, 1997

CUSIP No.:                        First Distribution Date:  January 26, 1998

Percentage Interest evidenced     Denomination:  $
by this Certificate: %



<PAGE>



     THIS CERTIFIES THAT ____________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders of the Class B-4  Certificates  with  respect to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
of Class B Certificates  bearing a lower  numerical  designation as specified in
the Agreement,  any Class B-4 Distribution  Amount required to be distributed to
Holders  of  Class  B-4  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-4 Certificates  applicable to each Distribution Date will be
7.000% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-4 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     No transfer of a Class B-4 Certificate will be made unless such transfer is
exempt from the  registration  requirements  of the  Securities  Act of 1933, as
amended,  and any applicable state securities laws or is made in accordance with
said Act and laws.  In the event that such a  transfer  is desired to be made by
the Holder hereof,  (i) the transferee will be required to execute an investment
letter in the form described in the Agreement and (ii) if such transfer is to be
made within  three  years from the later of (a) the date of initial  issuance of
the  Certificates  or (b) the last  date on which the  Seller  or any  affiliate
thereof was a Holder of the Certificates proposed to be transferred,  and unless
such transfer is made in reliance on Rule 144A of the Securities Act of 1933, as
amended, the Trust Administrator or the Seller may require the Holder to deliver
an opinion of counsel  acceptable to and in form and substance  satisfactory  to
the Trust  Administrator and the Seller that such transfer is exempt (describing
the applicable  exemption and the basis therefor) from or is being made pursuant
to the registration  requirements of the Securities Act of 1933, as amended, and
of any  applicable  statute of any state.  The Holder hereof  desiring to effect
such transfer shall, and does hereby agree to, indemnify the Trustee,  the Trust
Administrator,  the Seller, the Master Servicer,  and any Paying Agent acting on
behalf of the Trust  Administrator  against any liability that may result if the
transfer  is not so exempt or is not made in  accordance  with such  Federal and
state laws. In connection with any such transfer,  the Trust  Administrator will
also  require  (i) a  representation  letter,  in the form as  described  in the
Agreement,  stating  either  (a)  that the  transferee  is not a Plan and is not
acting on behalf of a Plan or using the assets of a Plan to effect such purchase
or (b) subject to certain conditions described in the Agreement, that the source
of funds used to purchase  this  Certificate  is an "insurance  company  general
account,"  or (ii) if such  transferee  is a Plan,  or is acting on behalf of or
using the assets of a Plan, (a) an opinion of counsel  acceptable to and in form
and  substance  satisfactory  to the Trust  Administrator  and the  Seller  with
respect to certain matters and (b) such other documentation as the Seller or the
Master Servicer may require, as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

                  This  Certificate is issued on December 23, 1997, and based on
its  issue  price  of  69.78078%,  including  accrued  interest,  and  a  stated
redemption price at maturity equal to its initial principal  balance,  is issued
with original issue discount  ("OID") for federal income tax purposes.  Assuming
that this  Certificate  pays in accordance with projected cash flows  reflecting
the prepayment  assumption of 250% SPA (as defined in the Prospectus  Supplement
dated  December 16, 1997 with  respect to the  offering of the Class A-1,  Class
A-2,  Class A-3, Class A-4, Class A-5, Class A-6, Class A-7, Class A-8 and Class
A-R  Certificates,  the  Class M  Certificates  and the  Class B-1 and Class B-2
Certificates)  used  to  price  this  Certificate:  (i) the  amount  of OID as a
percentage of the initial principal balance of this Certificate is approximately
30.21922222%;  and  (ii)  the  annual  yield to  maturity  of this  Certificate,
compounded  monthly,  is approximately  12.27%.  There is no short first accrual
period.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                       First Union National Bank,
                                         Trust Administrator

                                       By____________________________
                                         Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ________________________
   Authorized Officer


<PAGE>

                                   EXHIBIT B-5
                     [FORM OF FACE OF CLASS B-5 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS M CERTIFICATES,  THE CLASS B-1 CERTIFICATES,  THE CLASS
B-2  CERTIFICATES,  THE CLASS B-3 CERTIFICATES AND THE CLASS B-4 CERTIFICATES AS
DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."



<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-21, CLASS B-5

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                   Cut-Off Date:   December 1, 1997

CUSIP No.:                        First Distribution Date:  January 26, 1998

Percentage Interest evidenced     Denomination:  $
by this Certificate: %





<PAGE>



     THIS CERTIFIES THAT ____________________________ is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders of the Class B-5  Certificates  with  respect to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage  loans,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
of Class B Certificates  bearing a lower  numerical  designation as specified in
the Agreement,  any Class B-5 Distribution  Amount required to be distributed to
Holders  of  Class  B-5  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-5 Certificates  applicable to each Distribution Date will be
7.000% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-5 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     No transfer of a Class B-5 Certificate will be made unless such transfer is
exempt from the  registration  requirements  of the  Securities  Act of 1933, as
amended,  and any applicable state securities laws or is made in accordance with
said Act and laws.  In the event that such a  transfer  is desired to be made by
the Holder hereof,  (i) the transferee will be required to execute an investment
letter in the form described in the Agreement and (ii) if such transfer is to be
made within  three  years from the later of (a) the date of initial  issuance of
the  Certificates  or (b) the last  date on which the  Seller  or any  affiliate
thereof was a Holder of the Certificates proposed to be transferred,  and unless
such transfer is made in reliance on Rule 144A of the Securities Act of 1933, as
amended, the Trust Administrator or the Seller may require the Holder to deliver
an opinion of counsel  acceptable to and in form and substance  satisfactory  to
the Trust  Administrator and the Seller that such transfer is exempt (describing
the applicable  exemption and the basis therefor) from or is being made pursuant
to the registration  requirements of the Securities Act of 1933, as amended, and
of any  applicable  statute of any state.  The Holder hereof  desiring to effect
such transfer shall, and does hereby agree to, indemnify the Trustee,  the Trust
Administrator,  the Seller, the Master Servicer,  and any Paying Agent acting on
behalf of the Trust  Administrator  against any liability that may result if the
transfer  is not so exempt or is not made in  accordance  with such  Federal and
state laws. In connection with any such transfer,  the Trust  Administrator will
also  require  (i) a  representation  letter,  in the form as  described  in the
Agreement,  stating  either  (a)  that the  transferee  is not a Plan and is not
acting on behalf of a Plan or using the assets of a Plan to effect such purchase
or (b) subject to certain conditions described in the Agreement, that the source
of funds used to purchase  this  Certificate  is an "insurance  company  general
account,"  or (ii) if such  transferee  is a Plan,  or is acting on behalf of or
using the assets of a Plan, (a) an opinion of counsel  acceptable to and in form
and  substance  satisfactory  to the Trust  Administrator  and the  Seller  with
respect to certain matters and (b) such other documentation as the Seller or the
Master Servicer may require, as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

                  This  Certificate is issued on December 23, 1997, and based on
its  issue  price  of  32.17778%,  including  accrued  interest,  and  a  stated
redemption price at maturity equal to its initial principal  balance,  is issued
with original issue discount  ("OID") for federal income tax purposes.  Assuming
that this  Certificate  pays in accordance with projected cash flows  reflecting
the prepayment  assumption of 250% SPA (as defined in the Prospectus  Supplement
dated  December 16, 1997 with  respect to the  offering of the Class A-1,  Class
A-2,  Class A-3, Class A-4, Class A-5, Class A-6, Class A-7, Class A-8 and Class
A-R  Certificates,  the  Class M  Certificates  and the  Class B-1 and Class B-2
Certificates)  used  to  price  this  Certificate:  (i) the  amount  of OID as a
percentage of the initial principal balance of this Certificate is approximately
67.82222222%;  and  (ii)  the  annual  yield to  maturity  of this  Certificate,
compounded  monthly,  is approximately  27.74%.  There is no short first accrual
period.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                               First Union National Bank,
                                 Trust Administrator

                               By____________________________
                                 Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ________________________
   Authorized Officer


<PAGE>

                                    EXHIBIT C

                      [Form of Face of Class M Certificate]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AS DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."




<PAGE>




                        MORTGAGE PASS-THROUGH CERTIFICATE
                             SERIES 1997-21, CLASS M


                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by


                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

     THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST IN, THE
SELLER,  THE MASTER  SERVICER,  THE TRUSTEE,  THE TRUST  ADMINISTRATOR OR ANY OF
THEIR  AFFILIATES,  AND IS NOT INSURED OR GUARANTEED  BY THE SELLER,  THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR OR ANY OF THEIR AFFILIATES, OR BY
ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

     DISTRIBUTIONS  IN REDUCTION OF THE  PRINCIPAL  BALANCE OF THIS  CERTIFICATE
WILL BE MADE IN THE MANNER  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT.
ACCORDINGLY THE OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE AT ANY TIME
MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date:   December 1, 1997

CUSIP No.:                          First Distribution Date:  January 26, 1998

Percentage Interest evidenced       Denomination:  $
by this Certificate: %





<PAGE>



     THIS CERTIFIES THAT _______________________________ is the registered owner
of  the   Percentage   Interest   evidenced  by  this   Certificate  in  monthly
distributions to the Holders of the Class M Certificates with respect to a Trust
Estate consisting of a pool of fixed interest rate,  conventional,  monthly pay,
fully amortizing,  first lien, one- to four-family  residential  mortgage loans,
and which may include  loans  secured by shares  issued by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant to a Pooling and Servicing Agreement dated as of December 23, 1997 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and United States Trust Company of New
York,  as  trustee  (the  "Trustee"),  a summary  of  certain  of the  pertinent
provisions of which is set forth hereinafter.  To the extent not defined herein,
the  capitalized  terms used herein have the meanings  ascribed to such terms in
the  Agreement.  This  Certificate  is issued under and is subject to the terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates  as specified in the  Agreement,  any Class M
Distribution   Amount   required  to  be  distributed  to  Holders  of  Class  M
Certificates  on such  Distribution  Date,  subject  to  adjustment,  in certain
events, as specified in the Agreement.  The Class M Pass-Through Rate applicable
to each Distribution Date will be 7.000% per annum. The amount of interest which
accrues on this  Certificate  in any month will be  subject  to  reduction  with
respect to any  Non-Supported  Interest  Shortfall  and the interest  portion of
certain Realized Losses  allocated to the Class M Certificates,  as described in
the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate Register, unless such Person is
entitled to receive payments by wire transfer in immediately  available funds in
accordance with the Pooling and Servicing Agreement and such Person has notified
the Master  Servicer  pursuant to the Pooling and Servicing  Agreement that such
payments  are to be  made by  wire  transfer  of  immediately  available  funds.
Notwithstanding  the above, the final distribution in reduction of the principal
balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency specified by the Trust Administrator for that purpose in
the notice of final distribution.

     No transfer of a Class M Certificate  will be made unless the Holder hereof
desiring to make any such transfer shall deliver to the Trust  Administrator (i)
a  representation  letter,  in the form as described in the  Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee  is a Plan,  or is acting on behalf of or using the assets of a
Plan,  (a) an  opinion  of  counsel  acceptable  to and in  form  and  substance
satisfactory to the Trust  Administrator  and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

     Reference is hereby made to the further  provisions of this Certificate set
forth on the reverse  hereof,  which further  provisions  shall for all purposes
have the same effect as if set forth at this place.

     This  Certificate  constitutes  a  "regular  interest"  in a  "real  estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator,  by manual  signature,  this Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>



     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                  First Union National Bank,
                                    Trust Administrator

                                  By____________________________
                                    Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ________________________
   Authorized Officer


<PAGE>


                                    EXHIBIT D


                [Form of Reverse of Series 1997-21 Certificates]


                      NORWEST ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1997-21

     This Certificate is one of a duly authorized  issue of Certificates  issued
in  several   Classes  and  Subclasses   designated  as  Mortgage   Pass-Through
Certificates  of the Series  specified  hereon (herein  collectively  called the
"Certificates").

     The Certificates are limited in right of payment to certain collections and
recoveries  respecting the Mortgage Loans,  all as more  specifically  set forth
herein and in the Agreement. In the event funds are advanced with respect to any
Mortgage  Loan by a Servicer,  the Master  Servicer or the Trust  Administrator,
such advances are  reimbursable  to such  Servicer,  the Master  Servicer or the
Trust  Administrator  to the extent  provided  in the  Agreement,  from  related
recoveries  on such  Mortgage  Loan or from  other  cash  that  would  have been
distributable to Certificateholders.

     As provided in the  Agreement,  withdrawals  from the  Certificate  Account
created for the benefit of Certificateholders may be made by the Master Servicer
from time to time for purposes other than  distributions to  Certificateholders,
such purposes including  reimbursement to a Servicer, the Master Servicer or the
Trust  Administrator,  as  applicable,  of advances made by such  Servicer,  the
Master Servicer or the Trust Administrator.

     The  Agreement  permits,  with certain  exceptions  therein  provided,  the
amendment of the Agreement and the modification of the rights and obligations of
the Seller, the Master Servicer,  the Trust  Administrator,  and the Trustee and
the  rights of the  Certificateholders  under the  Agreement  at any time by the
Seller,  the Master Servicer,  the Trust  Administrator and the Trustee with the
consent of the Holders of Certificates evidencing in the aggregate not less than
66 2/3% of the  Voting  Interests  of each  Class or  Subclass  of  Certificates
affected  thereby.  Any such consent by the Holder of this Certificate  shall be
conclusive  and  binding  on such  Holder  and upon all  future  holders of this
Certificate  and of any  Certificate  issued  upon  the  transfer  hereof  or in
exchange  hereof or in lieu hereof  whether or not  notation of such  consent is
made upon the Certificate.  The Agreement also permits the amendment  thereof in
certain  circumstances  without  the  consent  of  the  Holders  of  any  of the
Certificates.

     As provided in the Agreement and subject to certain limitations therein set
forth,  the  transfer of this  Certificate  is  registrable  in the  Certificate
Register upon surrender of this  Certificate for registration of transfer at the
office or agency  appointed  by the Trust  Administrator,  duly  endorsed by, or
accompanied  by an assignment  in the form below or other written  instrument of
transfer in form  satisfactory  to the Trust  Administrator  and the Certificate
Registrar,  duly executed by the Holder  hereof or such  Holder's  attorney duly
authorized in writing,  and thereupon one or more new Certificates of authorized
Denominations  evidencing  the same Class and Subclass and aggregate  Percentage
Interest will be issued to the designated transferee or transferees.

     The  Certificates  are issuable  only as  registered  Certificates  without
coupons in Classes and Denominations  specified in the Agreement. As provided in
the Agreement and subject to certain limitations therein set forth, Certificates
are exchangeable for new Certificates of authorized Denominations evidencing the
same Class and Subclass and aggregate Percentage  Interest,  as requested by the
Holder surrendering the same.

     No service  charge  will be made for any such  registration  of transfer or
exchange,  but the Trust Administrator or the Certificate  Registrar may require
payment  of a sum  sufficient  to  cover  any tax or other  governmental  charge
payable in connection therewith.

     The Seller, the Master Servicer,  the Trust Administrator,  the Trustee and
the Certificate Registrar, and any agent of the Seller, the Master Servicer, the
Trust  Administrator,  the Trustee or the Certificate  Registrar,  may treat the
Person in whose name this  Certificate is registered as the owner hereof for all
purposes,  and neither the Seller, the Master Servicer, the Trust Administrator,
the Trustee,  the Certificate  Registrar nor any such agent shall be affected by
notice to the contrary.

     The obligations created by the Agreement in respect of the Certificates and
the Trust Estate created  thereby shall  terminate upon the last action required
to be taken by the Trust  Administrator on the Final  Distribution Date pursuant
to the Agreement  following the earlier of (i) the payment or other  liquidation
(or advance with respect  thereto) of the last Mortgage Loan subject  thereto or
the  disposition  of all property  acquired upon  foreclosure or deed in lieu of
foreclosure  of any Mortgage  Loan, and (ii) the purchase by the Seller from the
Trust  Estate of all  remaining  Mortgage  Loans and all  property  acquired  in
respect of such Mortgage Loans; provided, however, that the Trust Estate will in
no event  continue  beyond the expiration of 21 years from the death of the last
survivor of the  descendants  of Joseph P. Kennedy,  the late  ambassador of the
United  States to the Court of St. James,  living on the date of the  Agreement.
The  Agreement  permits,  but does not  require,  the  Seller  to  purchase  all
remaining  Mortgage  Loans and all property  acquired in respect of any Mortgage
Loan at a price  determined as provided in the  Agreement.  The exercise of such
option will effect early retirement of the  Certificates,  the Seller's right to
exercise such option being subject to the Pool  Scheduled  Principal  Balance of
the Mortgage Loans as of the  Distribution  Date upon which the proceeds of such
repurchase  are  distributed  being less than ten  percent of the  Cut-Off  Date
Aggregate Principal Balance.


<PAGE>


                                   ASSIGNMENT

FOR VALUE RECEIVED,  the undersigned  hereby sell(s),  assign(s) and transfer(s)
unto



(Please  print  or  typewrite  name and  address  including  postal  zip code of
assignee)

the  beneficial   interest   evidenced  by  the  within  Mortgage   Pass-Through
Certificate and hereby  authorizes the transfer of registration of such interest
to assignee on the Certificate Register of the Trust Estate.

     I (We) further direct the Certificate  Registrar to issue a new Certificate
of a like  Denomination  or  Percentage  Interest and Class or Subclass,  to the
above named assignee and deliver such Certificate to the following address:



Social Security or other Identifying Number of Assignee:



Dated:

                         -----------------------------------
                         Signature by or on behalf of assignor

                         -----------------------------------
                         Signature Guaranteed




<PAGE>




                            DISTRIBUTION INSTRUCTIONS

                  The  assignee  should  include the  following  for purposes of
distribution:

     Distributions  shall  be made,  if the  assignee  is  eligible  to  receive
distributions in immediately available funds, by wire transfer or otherwise,  in
immediately                  available                  funds                 to
_________________________________________________________________     for    the
account  of   _______________________________________________   account   number
_____________,        or,       if        mailed       by       check,        to
_______________________________________________________.  Applicable  statements
should          be           mailed          to           ______________________
________________________________________________________________.

     This information is provided by ______________________,  the assignee named
above, or ___________________________________, as its agent.


<PAGE>


                                    EXHIBIT E

                               CUSTODIAL AGREEMENT

     THIS CUSTODIAL  AGREEMENT (as amended and  supplemented  from time to time,
the "Agreement"),  dated as of _____________,  by and among FIRST UNION NATIONAL
BANK,  not  individually,  but  solely  as Trust  Administrator  (including  its
successors under the Pooling and Servicing  Agreement  defined below, the "Trust
Administrator"),   NORWEST  ASSET  SECURITIES  CORPORATION  (together  with  any
successor  in  interest,  the  "Seller"),   NORWEST  BANK  MINNESOTA,   NATIONAL
ASSOCIATION  (together  with any  successor in interest or  successor  under the
Pooling and Servicing  Agreement  referred to below, the "Master  Servicer") and
___________________________  (together  with any  successor  in  interest or any
successor appointed hereunder, the "Custodian").


                           W I T N E S S E T H  T H A T

     WHEREAS,  the Seller,  the Master  Servicer,  the Trust  Administrator  and
United States Trust Company of New York, as trustee, have entered into a Pooling
and Servicing  Agreement  dated as of December 23, 1997 relating to the issuance
of Mortgage Pass-Through Certificates,  Series 1997-21 (as in effect on the date
of this  Agreement,  the  "Original  Pooling and  Servicing  Agreement",  and as
amended  and  supplemented  from  time  to  time,  the  "Pooling  and  Servicing
Agreement"); and

     WHEREAS,   the  Custodian  has  agreed  to  act  as  agent  for  the  Trust
Administrator  for the purposes of receiving and holding  certain  documents and
other  instruments  delivered  by the Seller  under the  Pooling  and  Servicing
Agreement,  all upon the terms and  conditions  and  subject to the  limitations
hereinafter set forth;

     NOW,  THEREFORE,  in consideration of the premises and the mutual covenants
and agreements  hereinafter set forth, the Trust Administrator,  the Seller, the
Master Servicer and the Custodian hereby agree as follows:

                                    ARTICLE I

                                   Definitions

     Capitalized  terms used in this Agreement and not defined herein shall have
the meanings  assigned in the Original Pooling and Servicing  Agreement,  unless
otherwise required by the context herein.

                                   ARTICLE II

                          Custody of Mortgage Documents

     Section 2.1. Custodian to Act as Agent;  Acceptance of Custodial Files. The
Custodian,  as the duly  appointed  agent of the Trust  Administrator  for these
purposes,  acknowledges  receipt  of the  Mortgage  Notes,  the  Mortgages,  the
assignments and other documents relating to the Mortgage Loans identified on the
schedule  attached hereto and declares that it holds and will hold such Mortgage
Notes,  Mortgages,  assignments  and other  documents and any similar  documents
received  by  the  Trust  Administrator  subsequent  to  the  date  hereof  (the
"Custodial Files") as agent for the Trust  Administrator,  in trust, for the use
and benefit of all present and future Certificateholders.

     Section 2.2. Recordation of Assignments. If any Custodial File includes one
or more  assignments  to the Trust  Administrator  of Mortgage Notes and related
Mortgages that have not been recorded,  each such assignment  shall be delivered
by  the  Custodian  to  the  Seller  for  the  purpose  of  recording  it in the
appropriate  public  office for real  property  records,  and the Seller,  at no
expense to the Custodian, shall promptly cause to be recorded in the appropriate
public office for real property  records each such  assignment and, upon receipt
thereof  from such  public  office,  shall  return each such  assignment  to the
Custodian.

     Section 2.3.  Review of Custodial  Files.  The  Custodian  agrees,  for the
benefit of  Certificateholders,  to review, in accordance with the provisions of
Section 2.01 of the Pooling and Servicing Agreement,  each Custodial File. If in
performing  the review  required  by this  Section 2.3 the  Custodian  finds any
document or documents  constituting  a part of a Custodial File to be missing or
defective in any material  respect,  the Custodian  shall promptly so notify the
Seller, the Master Servicer and the Trust Administrator.

     Section 2.4.  Notification of Breaches of  Representations  and Warranties.
Upon  discovery by the Custodian of a breach of any  representation  or warranty
made by the  Seller  or the  Master  Servicer  as set forth in the  Pooling  and
Servicing  Agreement,  the  Custodian  shall give prompt  written  notice to the
Seller, the Master Servicer and the Trust Administrator.

     Section 2.5.  Custodian to Cooperate;  Release of Custodial Files. Upon the
payment in full of any Mortgage Loan, or the receipt by the Master Servicer of a
notification  that  payment in full will be escrowed in a manner  customary  for
such purposes,  the Master Servicer shall immediately  notify the Custodian by a
certification  (which certification shall include a statement to the effect that
all amounts received or to be received in connection with such payment which are
required to be deposited in the Certificate  Account pursuant to Section 3.02 of
the Pooling and  Servicing  Agreement  have been or will be so  deposited)  of a
Servicing  Officer and shall request  delivery to it of the Custodial  File. The
Custodian agrees,  upon receipt of such  certification and request,  promptly to
release the related Custodial File to the Master Servicer.

     From time to time as is appropriate for the servicing or foreclosure of any
Mortgage Loan, the Master  Servicer shall deliver to the Custodian a certificate
of a Servicing  Officer  requesting  that  possession  of all,  or any  document
constituting  part of, the Custodial File be released to the Master Servicer and
certifying  as to the reason for such  release  and that such  release  will not
invalidate any insurance coverage provided in respect of the Mortgage Loan. With
such  certificate,  the Master Servicer shall deliver to the Custodian a receipt
signed by a Servicing Officer on behalf of the Master Servicer, and upon receipt
of the  foregoing,  the  Custodian  shall  deliver  the  Custodial  File or such
document to the Master Servicer.  The Master Servicer shall cause each Custodial
File or any document  therein so released to be returned to the  Custodian  when
the need  therefor  by the  Master  Servicer  no longer  exists,  unless (i) the
Mortgage Loan has been liquidated and the Liquidation  Proceeds  relating to the
Mortgage  Loan have been  deposited  in the  Certificate  Account  to the extent
required by the Pooling and Servicing  Agreement or (ii) the  Custodial  File or
such document has been delivered to an attorney, or to a public trustee or other
public official as required by law, for purposes of initiating or pursuing legal
action or other proceedings for the foreclosure of the Mortgaged Property either
judicially  or  non-judicially,  and the Master  Servicer  has  delivered to the
Custodian a  certificate  of a Servicing  Officer  certifying as to the name and
address  of the  Person  to which  such  Custodial  File or such  document  were
delivered  and the  purpose or purposes  of such  delivery.  In the event of the
liquidation of a Mortgage  Loan,  the Custodian  shall deliver such receipt with
respect thereto to the Master  Servicer upon deposit of the related  Liquidation
Proceeds in the  Certificate  Account to the extent  required by the Pooling and
Servicing Agreement.

     Section  2.6.  Assumption  Agreements.  In the  event  that any  assumption
agreement or substitution of liability agreement is entered into with respect to
any Mortgage  Loan subject to this  Agreement in  accordance  with the terms and
provisions of the Pooling and Servicing  Agreement,  the Master  Servicer  shall
notify the Custodian  that such  assumption or  substitution  agreement has been
completed by  forwarding  to the  Custodian  the original of such  assumption or
substitution agreement,  which copy shall be added to the related Custodial File
and, for all purposes,  shall be considered a part of such Custodial File to the
same extent as all other documents and instruments constituting parts thereof.

                                   ARTICLE III

                            Concerning the Custodian

     Section 3.1. Custodian a Bailee and Agent of the Trust Administrator.  With
respect to each Mortgage Note,  Mortgage and other documents  constituting  each
Custodian  File  which  are  delivered  to  the  Custodian,   the  Custodian  is
exclusively  the  bailee  and  agent  of the  Trust  Administrator,  holds  such
documents for the benefit of  Certificateholders  and undertakes to perform such
duties and only such  duties as are  specifically  set forth in this  Agreement.
Except upon compliance with the provisions of Section 2.5 of this Agreement,  no
Mortgage  Note,  Mortgage or other  document  constituting a part of a Custodial
File shall be delivered by the Custodian to the Seller or the Master Servicer or
otherwise released from the possession of the Custodian.

     Section 3.2.  Indemnification.  The Seller  hereby  agrees to indemnify and
hold the Custodian  harmless from and against all claims,  liabilities,  losses,
actions,  suits or proceedings at law or in equity, or any other expenses,  fees
or charges of any  character or nature,  which the  Custodian  may incur or with
which the  Custodian  may be  threatened  by reasons of its acting as  custodian
under this Agreement, including indemnification of the Custodian against any and
all expenses,  including  attorney's  fees if counsel for the Custodian has been
approved  by the  Seller,  and  the  cost  of  defending  any  action,  suit  or
proceedings  or  resisting  any  claim.  Notwithstanding  the  foregoing,  it is
specifically  understood and agreed that in the event any such claim, liability,
loss,  action,  suit or proceeding or other expense,  fees, or charge shall have
been caused by reason of any negligent act, negligent failure to act, or willful
misconduct  on the part of the  Custodian,  or which shall  constitute a willful
breach of its duties hereunder, the indemnification provisions of this Agreement
shall not apply.

     Section  3.3.  Custodian  May  Own  Certificates.   The  Custodian  in  its
individual or any other capacity may become the owner or pledgee of Certificates
with the same rights it would have if it were not Custodian.

     Section 3.4.  Master  Servicer to Pay  Custodian's  Fees and Expenses.  The
Master Servicer  covenants and agrees to pay to the Custodian from time to time,
and the Custodian shall be entitled to, reasonable compensation for all services
rendered by it in the exercise and  performance  of any of the powers and duties
hereunder of the  Custodian,  and the Master  Servicer will pay or reimburse the
Custodian  upon its  request  for all  reasonable  expenses,  disbursements  and
advances  incurred  or made  by the  Custodian  in  accordance  with  any of the
provisions of this  Agreement  (including the  reasonable  compensation  and the
expenses and  disbursements  of its counsel and of all persons not  regularly in
its employ), except any such expense,  disbursement or advance as may arise from
its negligence or bad faith.

     Section  3.5.  Custodian  May  Resign;   Trust   Administrator  May  Remove
Custodian.  The  Custodian  may resign from the  obligations  and duties  hereby
imposed upon it as such obligations and duties relate to its acting as Custodian
of the Mortgage  Loans.  Upon  receiving such notice of  resignation,  the Trust
Administrator  shall either take custody of the Custodial  Files itself and give
prompt notice  thereof to the Seller,  the Master  Servicer and the Custodian or
promptly appoint a successor Custodian by written instrument,  in duplicate, one
copy of which instrument  shall be delivered to the resigning  Custodian and one
copy to the successor Custodian. If the Trust Administrator shall not have taken
custody of the  Custodial  Files and no successor  Custodian  shall have been so
appointed and have accepted  resignation,  the resigning  Custodian may petition
any  court  of  competent  jurisdiction  for  the  appointment  of  a  successor
Custodian.

     The Trust  Administrator  may remove  the  Custodian  at any time.  In such
event, the Trust  Administrator  shall appoint, or petition a court of competent
jurisdiction  to  appoint,  a  successor  Custodian  hereunder.   Any  successor
Custodian  shall  be  a  depository   institution   subject  to  supervision  or
examination by federal or state authority and shall be able to satisfy the other
requirements contained in Section 3.7.

     Any  resignation or removal of the Custodian and appointment of a successor
Custodian  pursuant to any of the  provisions  of this  Section 3.5 shall become
effective upon acceptance of appointment by the successor  Custodian.  The Trust
Administrator  shall give prompt notice to the Seller and the Master Servicer of
the appointment of any successor  Custodian.  No successor  Custodian shall have
been appointed and accepted  appointment by the Trust Administrator  without the
prior approval of the Seller and the Master Servicer.

     Section 3.6. Merger or  Consolidation  of Custodian.  Any Person into which
the Custodian  may be merged or converted or with which it may be  consolidated,
or any Person  resulting from any merger,  conversion or  consolidation to which
the Custodian shall be a party, or any Person  succeeding to the business of the
Custodian,  shall be the  successor  of the  Custodian  hereunder,  without  the
execution  or filing of any paper or any  further  act on the part of any of the
parties hereto, anything herein to the contrary notwithstanding.

     Section  3.7.  Representations  of  the  Custodian.  The  Custodian  hereby
represents  that  it is a  depository  institution  subject  to  supervision  or
examination by a federal or state authority,  has a combined capital and surplus
of at least  $10,000,000 and is qualified to do business in the  jurisdiction in
which it will hold any Custodian File.

                                   ARTICLE IV

                            Miscellaneous Provisions

     Section 4.1. Notices. All notices, requests, consents and demands and other
communications required under this Agreement or pursuant to any other instrument
or  document  delivered  hereunder  shall be in writing  and,  unless  otherwise
specifically provided, may be delivered personally,  by telegram or telex, or by
registered or certified mail, postage prepaid,  return receipt requested, at the
addresses  specified  on  the  signature  page  hereof  (unless  changed  by the
particular  party whose address is stated herein by similar  notice in writing),
in which case the notice will be deemed delivered when received.

     Section 4.2.  Amendments.  No modification or amendment of or supplement to
this  Agreement  shall be valid or  effective  unless the same is in writing and
signed by all parties  hereto,  and neither the Seller,  the Master Servicer nor
the  Trust  Administrator  shall  enter  into any  amendment  hereof  except  as
permitted by the Pooling and Servicing Agreement.  The Trust Administrator shall
give prompt  notice to the  Custodian  of any  amendment  or  supplement  to the
Pooling and Servicing  Agreement and furnish the Custodian  with written  copies
thereof.

     Section 4.3.  Governing Law. This Agreement shall be deemed a contract made
under the laws of the State of New York and shall be  construed  and enforced in
accordance with and governed by the laws of the State of New York.

     Section  4.4.  Recordation  of  Agreement.   To  the  extent  permitted  by
applicable  law, this  Agreement is subject to  recordation  in all  appropriate
public offices for real property records in all the counties or other comparable
jurisdictions in which any or all of the properties subject to the Mortgages are
situated,  and in any other  appropriate  public  recording office or elsewhere,
such  recordation  to be effected by the Master  Servicer  and at its expense on
direction by the Trust Administrator,  but only upon direction accompanied by an
Opinion  of  Counsel  to  the  effect  that  such  recordation   materially  and
beneficially affects the interests of the Certificateholders.

     For the purpose of facilitating the recordation of this Agreement as herein
provided and for other purposes,  this Agreement may be executed  simultaneously
in any number of counterparts,  each of which counterparts shall be deemed to be
an  original,  and  such  counterparts  shall  constitute  but one and the  same
instrument.

     Section  4.5.  Severability  of  Provisions.  If  any  one or  more  of the
covenants,  agreements,  provisions or terms of this Agreement  shall be for any
reason whatsoever held invalid, then such covenants,  agreements,  provisions or
terms  shall be  deemed  severable  from the  remaining  covenants,  agreements,
provisions or terms of this Agreement and shall in no way affect the validity or
enforceability  of the other provisions of this Agreement or of the Certificates
or the rights of the holders thereof.



<PAGE>



     IN WITNESS  WHEREOF,  this Agreement is executed as of the date first above
written.

Address:                                 FIRST UNION NATIONAL BANK

230 South Tryon Street                   By:
Charlotte, North Carolina,  28288        Name:
                                         Title:



Address:                                 NORWEST ASSET SECURITIES
                                         CORPORATION
7485 New Horizon Way
Frederick, Maryland  21703               By:
                                         Name:
                                         Title:



Address:                                 NORWEST BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
7485 New Horizon Way
Frederick, Maryland  21703               By:
                                         Name:
                                         Title:


Address:                                 [CUSTODIAN]

                                         By:
                                         Name:
                                         Title:





<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ____ day of _________,  19__, before me, a notary public in and for
the State of ____________, personally appeared _______________, known to me who,
being   by  me  duly   sworn,   did   depose   and  say  that  he   resides   at
__________________________;   that  he  is  the   __________  of  Norwest  Asset
Securities Corporation a Delaware corporation,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said corporation.



Notary Public



[NOTARIAL SEAL]



<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ____ day of _________,  19__, before me, a notary public in and for
the State of ____________, personally appeared _______________, known to me who,
being   by  me  duly   sworn,   did   depose   and  say  that  he   resides   at
__________________________; that he is the __________ of Norwest Bank Minnesota,
National  Association,  a national banking association,  one of the parties that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said corporation.



Notary Public



[NOTARIAL SEAL]



<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ___ day of ________,  19__,  before me, a notary  public in and for
the State of ____________, personally appeared __________ _________, known to me
who,  being  by  me  duly  sworn,   did  depose  and  say  that  he  resides  at
__________________________;  that he is the  ____________________ of First Union
National Bank, a national banking association,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said association.



Notary Public




[NOTARIAL SEAL]





<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ____ day of  ________,  19 , before me, a notary  public in and for
the State of __________,  personally appeared __________ __________, known to me
who,  being  by  me  duly  sworn,   did  depose  and  say  that  he  resides  at
__________________________;   that   he  is   the   _______________________   of
______________________,  a  _________________________,  one of the parties  that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said association.



Notary Public

 [NOTARIAL SEAL]


<PAGE>




                                   EXHIBIT F-1


            [Schedule of Mortgage Loans Serviced by Norwest Mortgage
                 from locations other than Frederick, Maryland]


NASCOR
NMI / 1997-21  Exhibit F-1
20 & 30 YEAR FIXED RATE NON RELOCATION LOANS


<TABLE>
<CAPTION>


                                                                                              NET
MORTGAGE                                                           MORTGAGE        MORTGAGE       CURRENT     ORIGINAL     SCHEDULED
LOAN                                          ZIP      PROPERTY    INTEREST        INTEREST       MONTHLY      TERM TO     MATURITY
NUMBER      CITY                 STATE        CODE       TYPE        RATE            RATE         PAYMENT     MATURITY       DATE
- ------      ----                 -----        ----       ----        ----            ----         -------     --------       ----
<S>         <C>                    <C>       <C>         <C>         <C>            <C>          <C>             <C>       <C> 
6160017     SAN JOSE               CA        95135       SFD         7.875          7.609        $2,537.74       360       1-Oct-27
6189977     PROSPER                TX        75078       SFD         7.625          7.359        $1,840.26       360       1-Nov-27
6269061     LA VERNE               CA        91750       PUD         8.125          7.859        $2,655.91       360       1-Nov-27
6285345     FLORRISANT             MO        63034       PUD         8.375          8.109        $1,812.01       360       1-Oct-27
6287802     WASHINGTON TWP         NJ        08691       SFD         7.875          7.609        $1,921.43       360       1-Nov-27
6292943     CUSHING                MN        56443       SFD         7.875          7.609        $1,827.17       360       1-Nov-27
6297086     NORTH OAKS             MN        55127       SFD         7.500          7.234        $1,748.04       360       1-Nov-27
6297368     TAOS                   NM        87571       SFD         7.750          7.484        $1,858.70       360       1-Oct-27
6298029     SCOTTSDALE             AZ        85254       SFD         8.375          8.109        $2,212.86       360       1-Sep-27
6298072     BUFFALO GROVE          IL        60089       SFD         8.125          7.859        $1,856.24       360       1-Sep-27
6298167     JACKSON                NJ        08527       SFD         8.375          8.109        $1,292.12       360       1-Oct-27
6299322     CAMARILLO              CA        93010       SFD         7.750          7.484        $2,121.30       360       1-Sep-27
6299835     ORCHARD LAKE           MI        48324       SFD         7.875          7.609        $2,501.49       360       1-Oct-27
6301834     RANDOLPH               NJ        07869       SFD         7.625          7.359        $2,494.97       360       1-Oct-27
6306298     CHERRY HILL            NJ        08003       SFD         7.250          6.984        $2,350.10       360       1-Oct-27
6308597     NORTH BEND             WA        98045       SFD         7.625          7.359        $1,741.17       360       1-Nov-27
6312697     ALPHARETTA             GA        30201       PUD         7.875          7.609        $2,001.19       360       1-Oct-27
6313420     KINGSLAND              TX        78639       SFD         8.250          7.984        $1,748.95       360       1-Sep-27
6314121     GALLOWAY TWP           NJ        08201       SFD         8.375          8.109         $847.10        360       1-Nov-27
6315132     WESTBOROUGH            MA        01581       SFD         7.500          7.234        $1,713.08       360       1-Sep-27
6319030     WEST LAKELAND          MN        55042       SFD         7.750          7.484        $2,124.88       360       1-Oct-27
6320787     MUNDELEIN              IL        60060       SFD         8.375          8.109        $1,988.50       360       1-Oct-27
6321642     SAN JOSE               CA        95135       SFD         8.125          7.859        $3,177.89       360       1-Oct-27
6324984     LA VERNE               CA        91750       SFD         8.000          7.734        $2,788.31       360       1-Oct-27
6332875     SAN RAMON              CA        94583       PUD         7.875          7.609        $1,862.27       360       1-Oct-27
6334244     SAN JUAN CAPISTRA      CA        92675       PUD         8.000          7.734        $2,949.37       360       1-Oct-27
6338011     SAN JOSE               CA        95138       SFD         7.625          7.359        $1,862.91       360       1-Oct-27
6339602     SAN JOSE               CA        95138       PUD         7.500          7.234        $1,985.77       360       1-Oct-27
6339838     ALAMEDA                CA        94502       SFD         7.750          7.484        $3,344.21       360       1-Oct-27
6341894     DILLON                 CO        80435       SFD         7.750          7.484        $2,191.58       360       1-Oct-27
6344446     LOS ANGELES            CA        90292       SFD         7.750          7.484        $5,473.39       360       1-Nov-27
6347773     INCLINE VILLAGE        NV        89451       SFD         7.500          7.234        $2,097.64       360       1-Oct-27
6350843     BERNARDS TWP           NJ        07820       PUD         7.500          7.234        $1,678.11       360       1-Nov-27
6351599     CRYSTAL LAKE           IL        60012       SFD         8.000          7.734        $2,105.90       360       1-Aug-27
6354731     SAN JOSE               CA        95123       SFD         7.750          7.484        $1,882.37       360       1-Oct-27
6355850     SAN JOSE               CA        95138       SFD         7.375          7.109        $4,296.69       360       1-Nov-27
6364486     SAN JOSE               CA        95123       SFD         7.750          7.484        $1,787.63       360       1-Oct-27
6364961     MORRIS TOWNSHIP        NJ        07960       SFD         8.000          7.734        $2,047.20       360       1-Sep-27
6367246     ALAMEDA                CA        94502       SFD         8.000          7.734        $2,469.48       360       1-Oct-27
6368343     WEST DES MOINES        IA        50266       SFD         7.625          7.359        $2,869.65       360       1-Aug-27
6369566     MEMPHIS                TN        38125       SFD         7.750          7.484        $2,149.24       360       1-Nov-27
6369578     PISCATAWAY             NJ        08854       SFD         7.500          7.234        $1,957.80       360       1-Nov-27
6371479     PARK CITY              UT        84098       SFD         7.875          7.609        $2,719.01       360       1-Sep-27
6371673     LA JOLLA               CA        92037       SFD         8.000          7.734        $10,969.78      360       1-Jul-27
6372923     SAN JOSE               CA        95138       SFD         7.625          7.359        $2,191.33       360       1-Oct-27
6376188     KEY WEST               FL        33040       SFD         7.875          7.609        $1,087.60       360       1-Oct-27
6376385     ROCKVILLE              MD        20854       SFD         7.375          7.109        $1,646.57       360       1-Oct-27
6378401     HARPSWELL              ME        04079       SFD         8.000          7.734        $1,717.01       360       1-Sep-27
6379907     BOCA RATON             FL        33496       SFD         8.000          7.734        $2,421.42       360       1-Aug-27
6380811     REDMOND                WA        98052       SFD         8.125          7.859        $2,130.22       360       1-Oct-27
6381654     NEWPORT COAST          CA        92657       PUD         7.875          7.609        $3,262.81       360       1-Oct-27
6383552     MARLBORO               MA        01752       SFD         8.000          7.734        $1,868.24       360       1-Aug-27
6385288     BLOOMINGTON            MN        55438       SFD         8.000          7.734        $1,783.05       360       1-Aug-27
6388719     WASHINGTON TWP         NJ        07853       SFD         8.125          7.859        $2,338.87       360       1-Oct-27
6389186     CAMARILLO              CA        93012       SFD         8.125          7.859        $1,826.17       360       1-Nov-27
6391602     BENICIA                CA        94510       SFD         7.875          7.609        $2,044.43       360       1-Nov-27
6392400     WOODBRIDGE             VA        22192       SFD         8.125          7.859        $1,692.89       360       1-Oct-27
6399130     MEDFIELD               MA        02052       SFD         8.250          7.984        $3,645.90       360       1-Sep-27
6399888     SACRAMENTO             CA        95822       SFD         8.000          7.734        $1,966.49       360       1-Sep-27
6402757     TEMECULA               CA        92592       SFD         8.000          7.734        $3,595.45       360       1-Sep-27
6403715     AGOURA HILLS           CA        91301       SFD         8.000          7.734        $1,724.35       360       1-Aug-27
6406098     UNION                  NJ        07083       SFD         8.250          7.984         $704.31        360       1-Sep-27
6407067     ALPHARETTA             GA        30005       SFD         7.625          7.359        $2,477.28       360       1-Sep-27
6410668     WASHINGTON TWP         NJ        07853       SFD         7.875          7.609        $2,291.22       360       1-Nov-27
6412127     CHANHASSEN             MN        55317       SFD         8.000          7.734        $1,937.51       360       1-Sep-27
6415928     RENO                   NV        89511       PUD         8.000          7.734        $2,065.69       360       1-Oct-27
6417444     SHREWSBURY             MA        01545       SFD         7.500          7.234        $2,157.64       360       1-Sep-27
6420009     ANAHEIM                CA        92808       PUD         8.125          7.859        $2,115.75       360       1-Nov-27
6420217     ANAHEIM                CA        92807       SFD         7.750          7.484        $1,946.49       360       1-Oct-27
6420438     LOS ANGELES            CA        91344       SFD         8.000          7.734        $4,769.47       360       1-Nov-27
6420864     LOS ANGELES            CA        90039       SFD         8.375          8.109        $2,346.72       360       1-Aug-27
6422043     MEDINA                 MN        55340       SFD         7.625          7.359        $4,459.10       360       1-Oct-27
6423077     NEW HYDE PARK          NY        11040       SFD         7.875          7.609        $1,812.67       360       1-Oct-27
6424101     CARSON CITY            NV        89704       SFD         7.625          7.359        $4,639.59       360       1-Nov-27
6427218     ANNAPOLIS              MD        21401       SFD         7.875          7.609        $3,625.35       360       1-Oct-27
6428577     BOULDER                CO        80304       SFD         7.750          7.484        $1,647.75       360       1-Sep-27
6429742     BRIGHTON               UT        84121       SFD         8.125          7.859        $1,893.37       360       1-Sep-27
6429855     PHOENIX                AZ        85044       SFD         8.000          7.734        $1,749.29       360       1-Sep-27
6429999     EVERGREEN              CO        80439       SFD         8.000          7.734        $1,799.56       360       1-Aug-27
6434745     BLOOMINGTON            MN        55438       SFD         8.125          7.859        $2,791.79       360       1-Aug-27
6447809     SUNLAND                CA        91040       SFD         8.500          8.234         $768.91        360       1-Sep-27
6482726     RANCHO SANTA FE        CA        92067       PUD         8.125          7.859        $6,515.41       360       1-Oct-27
6484908     ORANGE                 CA        92867       SFD         7.750          7.484        $2,040.34       360       1-Oct-27
6493734     GREENFIELD             MN        55357       SFD         7.875          7.609        $1,826.45       360       1-Sep-27
6500087     MONUMENT               CO        80132       SFD         7.500          7.234        $2,740.92       360       1-Oct-27
6522774     HASTINGS               MN        55033       SFD         7.875          7.609        $1,696.01       360       1-Dec-27
6525477     LIBERTYVILLE           IL        60048       SFD         7.875          7.609        $1,767.36       360       1-Nov-27
6526921     HUGO                   MN        55038       PUD         8.000          7.734        $2,840.40       360       1-Nov-27
6537117     ORLAND PARK            IL        60462       SFD         8.000          7.734        $2,296.69       360       1-Nov-27
6541969     WAYZATA                MN        55391       SFD         7.750          7.484        $1,719.39       360       1-Nov-27
6544984     CHICAGO                IL        60645       SFD         8.000          7.734        $1,742.69       360       1-Nov-27
6549219     PLYMOUTH               MN        55446       SFD         7.625          7.359        $1,754.62       360       1-Nov-27
6553949     MINNEAPOLIS            MN        55409       SFD         7.500          7.234        $2,272.45       360       1-Nov-27
6557766     MAPLE GROVE            MN        55311       SFD         7.750          7.484        $2,091.92       360       1-Nov-27
6559820     CHASKA                 MN        55318       SFD         7.750          7.484        $2,292.52       360       1-Nov-27
6564748     WEST CHICAGO           IL        60185       SFD         7.625          7.359        $1,953.03       300       1-Nov-22
6564790     WOODBURY               MN        55125       SFD         8.000          7.734        $1,717.01       360       1-Nov-27
6999038     HOPEWELL JCT           NY        12533       SFD         8.000          7.734        $1,907.79       360       1-Oct-27
6999096     AMESBURY               MA        01923       SFD         7.750          7.484        $1,755.21       360       1-Oct-27
6999173     REHOBOTH BEACH         DE        19971       SFD         7.500          7.234        $1,713.08       360       1-Sep-27
6999177     CHANDLER               AZ        85224       SFD         7.750          7.484         $608.95        360       1-Aug-27
6999183     BRITT                  MN        55710       SFD         8.125          7.859        $2,398.27       360       1-Jul-27
6999202     TUCSON                 AZ        85749       SFD         7.875          7.609        $2,472.49       360       1-Oct-27
6999203     ISSAQUAH               WA        98029       PUD         7.750          7.484        $2,783.62       360       1-Oct-27
6999226     WAUCONDA               IL        60084       PUD         7.875          7.609        $1,725.67       360       1-Oct-27
6999227     COLORADO SPRINGS       CO        80904       SFD         7.625          7.359        $3,008.12       360       1-Nov-27
6999229     GRESHAM                OR        97030       SFD         8.000          7.734        $1,750.03       360       1-Oct-27
6999231     RIVERSIDE              CA        92506       SFD         8.375          8.109        $4,469.22       360       1-Jul-27
6999232     LITTLETON              CO        80124       SFD         7.750          7.484        $2,133.48       360       1-Sep-27
6999233     CORNELIUS              NC        28031       SFD         7.500          7.234        $3,391.19       360       1-Sep-27
6999237     AUSTIN                 TX        78746       SFD         8.000          7.734        $1,888.34       360       1-Aug-27
6999241     VANDALIA               OH        45377       SFD         7.875          7.609        $1,666.17       360       1-Sep-27
6999253     GYPSUM                 CO        81637       SFD         7.750          7.484        $1,841.18       360       1-Nov-27
6999257     EDEN PRAIRIE           MN        55347       SFD         7.875          7.609        $3,265.37       360       1-Aug-27
6999258     WAUCONDA               IL        60084       SFD         8.000          7.734        $2,384.73       360       1-Oct-27
6999261     MESA                   AZ        85207       PUD         7.500          7.234        $2,202.53       360       1-Sep-27
6999263     CHAPEL HILL            NC        27516       PUD         7.750          7.484        $2,003.11       240       1-Nov-17
6999265     DEEPHAVEN              MN        55343       SFD         7.500          7.234        $2,936.70       360       1-Sep-27
6999267     SAN JOSE               CA        95138       PUD         7.375          7.109        $2,486.43       360       1-Oct-27
6999269     FORT COLLINS           CO        80525       SFD         8.000          7.734        $2,384.73       360       1-Sep-27
6999270     HANFORD                CA        93230       SFD         7.750          7.484        $3,582.06       360       1-Oct-27
6999271     ALAMO HEIGHTS          TX        78209       SFD         8.000          7.734        $2,935.06       360       1-Aug-27
6999281     CRYSTAL LAKE           IL        60014       SFD         7.875          7.609        $1,730.74       360       1-Sep-27
6999285     ALBUQUERQUE            NM        87107       SFD         7.750          7.484        $1,719.39       360       1-Oct-27
6999287     RESTON                 VA        21094       SFD         7.875          7.609        $1,997.57       360       1-Nov-27
6999289     COLORADO SPRINGS       CO        80920       SFD         7.875          7.609        $2,008.41       360       1-Nov-27
6999291     GILROY                 CA        95020       SFD         7.750          7.484        $2,149.24       360       1-Nov-27
</TABLE>


COUNT:   127
WAC:       7.857087221
WAM:     356.63801
WALTV:    76.64589437



<PAGE>
<TABLE>
<CAPTION>
                 CUT-OFF
MORTGAGE          DATE                                     MORTGAGE                    T.O.P.        MASTER
LOAN            PRINCIPAL                                 INSURANCE      SERVICE      MORTGAGE       SERVICE
NUMBER           BALANCE         LTV         SUBSIDY         CODE          FEE          LOAN           FEE
- ------           -------         ---         -------         ----          ---          ----           ---
<S>            <C>              <C>          <C>            <C>           <C>           <C>           <C>
6160017        $349,416.04      79.21                                     0.250                       0.016
6189977        $259,811.82      67.53                                     0.250                       0.016
6269061        $357,466.02      90.00                         33          0.250                       0.016
6285345        $238,102.61      94.99                         06          0.250                       0.016
6287802        $264,817.63      79.18                                     0.250                       0.016
6292943        $251,826.58      90.00                         01          0.250                       0.016
6297086        $249,814.46      38.14                                     0.250                       0.016
6297368        $259,078.60      77.22                                     0.250                       0.016
6298029        $290,591.33      95.00                         33          0.250                       0.016
6298072        $249,506.08      63.43                                     0.250                       0.016
6298167        $169,787.94      69.99                                     0.250                       0.016
6299322        $295,468.97      80.00                                     0.250                       0.016
6299835        $344,523.58      83.13                         11          0.250                       0.016
6301834        $351,988.12      79.99                                     0.250                       0.016
6306298        $343,960.88      79.29                                     0.250                       0.016
6308597        $245,821.96      79.07                                     0.250                       0.016
6312697        $275,618.87      80.00                                     0.250                       0.016
6313420        $232,351.58      63.78                                     0.250                       0.016
6314121        $111,380.73      69.03                                     0.250                       0.016
6315132        $244,451.09      84.48                         06          0.250                       0.016
6319030        $296,179.97      89.99                         24          0.250                       0.016
6320787        $261,293.64      72.35                                     0.250                       0.016
6321642        $427,438.16      80.00                                     0.250                       0.016
6324984        $379,488.34      79.88                                     0.250                       0.016
6332875        $256,485.32      80.00                                     0.250                       0.016
6334244        $401,408.80      79.99                                     0.250                       0.016
6338011        $262,817.81      80.00                                     0.250                       0.016
6339602        $283,562.82      80.00                                     0.250                       0.016
6339838        $466,138.95      80.00                                     0.250                       0.016
6341894        $305,476.78      90.00                         33          0.250                       0.016
6344446        $762,934.17      80.00                                     0.250                       0.016
6347773        $299,553.33      75.00                                     0.250                       0.016
6350843        $239,821.89      69.38                                     0.250                       0.016
6351599        $285,688.44      70.00                                     0.250                       0.016
6354731        $262,259.53      79.99                                     0.250                       0.016
6355850        $621,626.33      79.99                                     0.250                       0.016
6364486        $249,171.64      80.00                                     0.250                       0.016
6364961        $278,434.65      90.00                         33          0.250                       0.016
6367246        $336,096.87      79.99                                     0.250                       0.016
6368343        $400,718.81      70.00                                     0.250                       0.016
6369566        $299,788.26      66.67                                     0.250                       0.016
6369578        $279,792.20      80.00                                     0.250                       0.016
6371479        $374,220.69      75.00                                     0.250                       0.016
6371673       $1,489,917.12     65.00                                     0.250                       0.016
6372923        $309,150.42      79.99                                     0.250                       0.016
6376188        $149,792.88      53.10                                     0.250                       0.016
6376385        $238,036.08      80.00                                     0.250                       0.016
6378401        $233,268.28      90.00                         06          0.250                       0.016
6379907        $329,105.42      75.00                                     0.250                       0.016
6380811        $286,523.39      89.99                         06          0.250                       0.016
6381654        $449,378.60      48.49                                     0.250                       0.016
6383552        $253,919.77      90.00                         33          0.250                       0.016
6385288        $242,341.25      90.00                         13          0.250                       0.016
6388719        $314,586.49      90.00                         17          0.250                       0.016
6389186        $245,789.12      94.99                         17          0.250                       0.016
6391602        $281,769.96      80.00                                     0.250                       0.016
6392400        $227,700.71      95.00                         24          0.250                       0.016
6399130        $484,365.22      80.00                                     0.250                       0.016
6399888        $267,456.93      80.00                                     0.250                       0.016
6402757        $489,007.06      75.38                                     0.250                       0.016
6403715        $233,002.62      73.44                                     0.250                       0.016
6406098        $93,569.43       75.00                                     0.250                       0.016
6407067        $349,235.20      76.92                                     0.250                       0.016
6410668        $315,782.53      80.00                                     0.250                       0.016
6412127        $263,514.91      80.00                                     0.250                       0.016
6415928        $281,140.96      80.00                                     0.250                       0.016
6417444        $307,889.67      80.00                                     0.250                       0.016
6420009        $284,763.60      94.99                         11          0.250                       0.016
6420217        $271,315.24      75.00                                     0.250                       0.016
6420438        $649,563.86      74.80                                     0.250                       0.016
6420864        $307,772.22      95.00                         17          0.250                       0.016
6422043        $629,085.16      70.00                                     0.250                       0.016
6423077        $249,654.79      66.58                                     0.250                       0.016
6424101        $655,025.57      69.00                                     0.250                       0.016
6427218        $499,309.54      80.00                                     0.250                       0.016
6428577        $229,509.85      62.16                                     0.250                       0.016
6429742        $254,496.18      60.00                                     0.250                       0.016
6429855        $237,312.91      79.47                                     0.250                       0.016
6429999        $244,585.15      89.98                         12          0.250                       0.016
6434745        $375,006.13      80.00                                     0.250                       0.016
6447809        $99,816.97       66.67                                     0.250                       0.016
6482726        $876,348.11      65.00                                     0.250                       0.016
6484908        $284,396.69      81.37                         33          0.250                       0.016
6493734        $251,376.51      90.00                         13          0.250                       0.016
6500087        $391,416.34      79.19                                     0.250                       0.016
6522774        $233,910.00      90.00                         06          0.250                       0.016
6525477        $243,582.25      75.00                                     0.250                       0.016
6526921        $386,840.27      94.99                         06          0.250                       0.016
6537117        $312,122.67      79.85                                     0.250                       0.016
6541969        $239,830.61      80.00                                     0.250                       0.016
6544984        $237,340.64      95.00                         02          0.250                       0.016
6549219        $247,720.58      79.99                                     0.250                       0.016
6553949        $324,758.80      30.95                                     0.250                       0.016
6557766        $291,793.91      80.00                                     0.250                       0.016
6559820        $319,774.15      80.00                                     0.250                       0.016
6564748        $261,107.95      79.70                                     0.250                       0.016
6564790        $233,842.99      90.00                         13          0.250                       0.016
6999038        $259,649.92      75.14                                     0.250                       0.016
6999096        $244,653.04      94.99                         33          0.250                       0.016
6999173        $244,451.09      64.99                                     0.250                       0.016
6999177        $84,757.70       51.80                                     0.250                       0.016
6999183        $321,929.15      85.56                         01          0.250                       0.016
6999202        $340,529.10      89.97                         33          0.250                       0.016
6999203        $387,999.76      79.99                                     0.250                       0.016
6999226        $237,671.34      67.09                                     0.250                       0.016
6999227        $424,592.40      73.91                                     0.250                       0.016
6999229        $238,178.87      90.00                         06          0.250                       0.016
6999231        $586,146.96      80.00                                     0.250                       0.016
6999232        $297,165.35      78.45                                     0.250                       0.016
6999233        $483,913.42      53.89                                     0.250                       0.016
6999237        $256,439.23      41.51                                     0.250                       0.016
6999241        $229,316.44      90.00                         33          0.250                       0.016
6999253        $256,818.61      78.59                                     0.250                       0.016
6999257        $448,797.07      80.00                                     0.250                       0.016
6999258        $324,562.42      68.68                                     0.250                       0.016
6999261        $309,109.30      89.85                         33          0.250                       0.016
6999263        $243,472.72      79.22                                     0.250                       0.016
6999265        $419,059.04      57.93                                     0.250                       0.016
6999267        $359,172.46      69.50                                     0.250                       0.016
6999269        $324,341.44      76.11                                     0.250                       0.016
6999270        $499,291.94      62.50                                     0.250                       0.016
6999271        $398,915.65      80.00                                     0.250                       0.016
6999281        $237,951.64      69.97                                     0.250                       0.016
6999285        $239,488.54      75.00                                     0.250                       0.016
6999287        $275,310.40      79.98                                     0.250                       0.016
6999289        $276,805.38      95.00                         06          0.250                       0.016
6999291        $299,788.26      45.45                                     0.250                       0.016

        $41,226,226,084.59

</TABLE>

<PAGE>




                                   EXHIBIT F-2


[Schedule of Mortgage Loans Serviced by Norwest Mortgage in Frederick, Maryland]

NASCOR
NMI / 1997-21  Exhibit F-2
20 & 30 YEAR FIXED RATE NON RELOCATION LOANS


<TABLE>
<CAPTION>


                                                                                               NET
  MORTGAGE                                                          MORTGAGE       MORTGAGE       CURRENT     ORIGINAL     SCHEDULED
    LOAN                                      ZIP       PROPERTY    INTEREST       INTEREST       MONTHLY     TERM TO      MATURITY
   NUMBER    CITY                 STATE      CODE         TYPE        RATE           RATE         PAYMENT     MATURITY       DATE
   ------    ----                 -----      ----         ----        ----           ----         -------     --------       ----
<S>          <C>                   <C>       <C>          <C>         <C>            <C>          <C>           <C>         <C> 
2154639      OWATONNA              MN        55060        SFD         7.875          7.609       $2,436.23      360        1-Oct-27
4511090      HATTERAS              NC        27943        SFD         7.875          7.609        $812.08       360        1-Dec-27
4542342      FREEHOLD              NJ        07728        SFD         7.625          7.359       $1,893.35      360        1-Dec-27
4551473      WHITEFISH             MT        59937        SFD         8.000          7.734       $2,678.24      360        1-Oct-27
4578338      BASKING RIDGE         NJ        07920        SFD         7.750          7.484       $2,650.73      360        1-Dec-27
4589639      DIX HILLS             NY        11746        SFD         7.750          7.484       $2,675.80      360        1-Nov-27
4598783      IRVINE                CA        92620        SFD         7.375          7.109       $1,670.74      360        1-Sep-27
4599525      BAKERSFIELD           CA        93311        SFD         7.500          7.234       $2,617.86      360        1-Dec-27
4604828      WEST CHESTER          PA        19380        SFD         7.625          7.359       $1,981.82      360        1-Nov-27
4605026      NEWTON                MA        02160        SFD         7.625          7.359       $2,335.72      360        1-Nov-27
4605165      RIVER FOREST          IL        60305        SFD         8.000          7.734       $2,054.54      360        1-Oct-27
4606146      GAITHERSBURG          MD        20878        SFD         7.500          7.234       $2,433.27      360        1-Nov-27
4606156      ORANGE                CA        92867        PUD         7.875          7.609       $3,784.50      360        1-Dec-27
4613613      BERNARDS TOWNSHIP     NJ        07920        SFD         7.250          6.984       $2,087.46      360        1-Oct-27
4616789      SAN CLEMENTE          CA        92672        PUD         8.000          7.734       $2,177.82      360        1-Nov-27
4617133      PENFIELD              NY        14526        SFD         7.500          7.234        $699.22       360        1-Oct-27
4617583      LAUREL HOLLOW         NY        11791        SFD         7.875          7.609       $3,190.31      360        1-Dec-27
4618734      LIBERTYVILLE          IL        60048        SFD         7.875          7.609       $1,905.49      360        1-Nov-27
4618903      SUPERIOR              CO        80027        SFD         7.500          7.234       $2,139.95      360        1-Oct-27
4619230      COLTS NECK            NJ        07722        SFD         7.500          7.234       $3,111.51      360        1-Dec-27
4620576      ALPHARETTA            GA        30202        SFD         8.125          7.859       $2,683.39      360        1-Sep-27
4620997      RAYMOND               ME        04071        SFD         7.500          7.234       $1,957.81      360        1-Dec-27
4624740      THE WOODLANDS         TX        77381        SFD         7.625          7.359       $1,925.20      360        1-Dec-27
4626014      MILILANI              HI        96789        SFD         7.625          7.359       $2,689.62      360        1-Oct-27
4626111      CLINTON TWP           NJ        08833        SFD         8.250          7.984       $2,325.18      360        1-Dec-27
4626962      NASHVILLE             TN        37215        SFD         7.875          7.609       $3,045.29      360        1-Sep-27
4627176      SHORT HILLS           NJ        07078        SFD         7.875          7.609       $3,625.35      360        1-Nov-27
4627478      HANOVER TOWNSHIP      NJ        07927        SFD         7.250          6.984       $1,637.23      360        1-Nov-27
4629084      JUNO BEACH            FL        33408        SFD         7.750          7.484       $3,062.67      360        1-Nov-27
4629122      EAST BRUNSWICK        NJ        08816        SFD         7.750          7.484       $1,898.50      360        1-Dec-27
4629290      OLNEY                 MD        20832        SFD         7.250          6.984       $1,746.38      360        1-Dec-27
4630509      TIBURON               CA        94920        SFD         7.500          7.234       $3,496.08      360        1-Nov-27
4631340      LARKSPUR              CO        80118        SFD         7.875          7.609       $2,827.77      360        1-Nov-27
4632554      RIDGEWOOD             NJ        07450        SFD         7.250          6.984       $1,705.45      360        1-Nov-27
4633070      SALT LAKE CITY        UT        84109        SFD         7.750          7.484       $1,647.75      360        1-Sep-27
4633159      YONKERS               NY        10703        SFD         8.125          7.859        $899.17       360        1-Oct-27
4633542      WASHINGTON TOWNSHIP   NJ        07853        SFD         7.750          7.484       $2,320.46      360        1-Sep-27
4634018      LONG BEACH            NY        11561        LCO         8.125          7.859       $1,084.05      360        1-Dec-27
4635293      EAST LONGMEADOW       MA        01028        SFD         7.875          7.609       $1,896.06      360        1-Nov-27
4635648      HOPEWELL TOWNSHIP     NJ        08560        SFD         8.000          7.734       $2,304.02      360        1-Nov-27
4636249      OMAHA                 NE        68135        SFD         7.625          7.359       $1,808.42      360        1-Nov-27
4637334      OAKLAND               CA        94618        SFD         8.000          7.734       $2,252.66      360        1-Aug-27
4637347      NAPERVILLE            IL        60565        SFD         7.875          7.609       $1,714.79      360        1-Aug-27
4637431      SUGAR LAND            TX        77479        SFD         7.875          7.609       $1,827.18      360        1-Jul-27
4637629      WEST DES MOINES       IA        50265        SFD         7.500          7.234       $1,901.86      360        1-Nov-27
4637698      RIPON                 CA        95366        SFD         8.125          7.859       $1,722.60      360        1-Sep-27
4637759      WATER MILL            NY        11976        SFD         7.875          7.609       $2,305.73      360        1-Nov-27
4637770      WESTFORD              MA        01886        SFD         8.375          8.109       $2,271.10      360        1-Jul-27
4637772      SAN DIEGO             CA        92129        SFD         8.000          7.734       $1,689.86      360        1-Jul-27
4637826      MARATHON              FL        33050        SFD         8.250          7.984       $1,803.04      360        1-Oct-27
4637956      DAVIE                 FL        33330        SFD         8.125          7.859       $2,041.87      360        1-Sep-27
4637995      CLAYTON               CA        94517        SFD         8.000          7.734       $1,980.43      360        1-Nov-27
4638279      HAWORTH               NJ        07641        SFD         8.250          7.984       $2,645.21      360        1-Nov-27
4638296      HUNTLEY               IL        60142        SFD         8.500          8.234       $2,498.97      360        1-Jul-27
4638307      SAN RAMON             CA        94583        SFD         8.250          7.984       $2,043.45      360        1-Jul-27
4638483      ALPHARETTA            GA        30004        SFD         8.500          8.234       $1,903.45      360        1-Nov-27
4638624      CHAPPAQUA             NY        10514        SFD         8.125          7.859       $5,939.98      360        1-Jun-27
4638652      NEW HYDE PARK         NY        11040        SFD         8.000          7.734       $1,777.54      360        1-Jul-27
4639328      SHREWSBURY            MA        01545        SFD         8.125          7.859       $1,906.74      360        1-Jul-27
4639331      BERTHOUD              CO        80513        SFD         8.000          7.734       $1,922.47      360        1-Aug-27
4639348      HUNTINGDON VALLEY     PA        19006        SFD         8.625          8.359       $3,111.16      360        1-Jun-27
4639354      SALT LAKE CITY        UT        84121        SFD         8.125          7.859       $1,746.36      360        1-Aug-27
4639387      HUDSON                MA        01749        SFD         8.375          8.109       $1,810.88      360        1-Jul-27
4639646      ALLENWOOD             PA        17810        SFD         7.750          7.484        $537.31       360        1-Oct-27
4639976      BROWNSBURG            IN        46112        SFD         8.125          7.859       $1,892.22      355        1-May-27
4640059      UPPER DUBLIN TOWNSH   PA        19002        SFD         7.875          7.609       $1,653.16      360        1-Nov-27
4640060      MORRIS TOWNSHIP       NJ        07960        SFD         7.875          7.609       $1,899.69      360        1-Oct-27
4640113      WELLFLEET             MA        02667        SFD         8.250          7.984       $1,235.84      360        1-Nov-27
4640943      LUSBY                 MD        20657        SFD         7.500          7.234       $2,259.17      360        1-Sep-27
4641273      SANTA MONICA          CA        90405        SFD         7.875          7.609       $1,877.93      360        1-Nov-27
4641949      NASHUA                NH        03060        SFD         8.625          8.359       $2,100.03      360        1-Oct-27
4642364      STATEN ISLAND         NY        10304        SFD         8.250          7.984       $1,779.00      360        1-Dec-27
4642416      MOUNTAIN LAKES        NJ        07046        SFD         8.000          7.734       $2,326.04      360        1-Nov-27
4642557      NORTH POTOMAC         MD        20878        SFD         7.875          7.609       $1,859.81      360        1-Sep-27
4643035      SOUTH PLAINFIELD      NJ        07080        SFD         7.500          7.234        $524.41       360        1-Oct-27
4643050      MIAMI                 FL        33156        SFD         8.125          7.859       $2,915.79      360        1-Nov-27
4643260      PASADENA              CA        91105        SFD         7.625          7.359       $3,391.75      360        1-Nov-27
4643355      COLLIERVILLE          TN        38017        SFD         7.875          7.609       $2,251.35      360        1-Nov-27
4643384      TELLURIDE             CO        81435        SFD         8.000          7.734       $1,540.91      360        1-Sep-27
4643598      SANDY SPRINGS         GA        30328        SFD         8.000          7.734       $2,261.83      360        1-Nov-27
4643781      MCLEAN                VA        22101        SFD         7.375          7.109       $2,445.00      360        1-Nov-27
4643785      OKLAHOMA CITY         OK        73151        SFD         7.875          7.609       $2,311.16      360        1-Oct-27
4643926      ELLICOTT CITY         MD        21043        SFD         8.125          7.859       $1,930.49      360        1-Nov-27
4644115      GULF BREEZE           FL        32561        SFD         8.000          7.734       $1,819.74      360        1-Nov-27
4644125      WINDSOR               CA        95492        SFD         7.500          7.234       $1,588.62      360        1-Dec-27
4644261      JACKSON               LA        70748        SFD         7.875          7.609       $1,703.91      360        1-Nov-27
4644347      SETAUKET              NY        11733        SFD         7.375          7.109       $2,348.30      360        1-Nov-27
4644596      OKLAHOMA CITY         OK        73116        SFD         8.125          7.859       $2,578.32      360        1-Dec-27
4644692      ALPHARETTA            GA        30201        SFD         7.750          7.484        $756.53       360        1-Oct-27
4644777      BOCA RATON            FL        33433        SFD         8.000          7.734       $4,549.34      360        1-Nov-27
4644909      EDMOND                OK        73034        SFD         8.125          7.859       $2,405.69      360        1-Oct-27
4644986      BETHEL                PA        19061        SFD         7.875          7.609       $1,739.08      360        1-Sep-27
4645091      TULSA                 OK        74137        SFD         7.875          7.609       $1,792.37      360        1-Nov-27
4645173      FARMINGTON HILLS      MI        48331        SFD         8.000          7.734       $2,670.90      360        1-Nov-27
4645376      PELLA                 IA        50219        SFD         7.750          7.484        $537.31       360        1-Oct-27
4645400      NEW TRIPOLI           PA        18078        SFD         8.125          7.859       $2,706.41      360        1-Nov-27
4645539      WESTFIELD             NJ        07090        SFD         8.250          7.984       $1,757.97      360        1-Dec-27
4645680      HILLSBOROUGH          CA        94010        SFD         7.375          7.109       $2,762.71      360        1-Dec-27
4645861      WILTON                CT        06897        SFD         7.625          7.359       $2,774.56      360        1-Dec-27
4645907      NATICK                MA        01760        SFD         8.125          7.859       $2,526.80      240        1-Nov-17
4646331      BALDWIN               NY        11510        SFD         8.000          7.734        $924.54       360        1-Nov-27
4646467      RIDGELAND             MS        39157        SFD         7.875          7.609       $2,233.21      360        1-Nov-27
4646554      HAYES                 VA        23072        SFD         7.750          7.484       $2,120.58      360        1-Nov-27
4646619      REISTERSTOWN          MD        21136        SFD         8.125          7.859       $1,856.25      360        1-Sep-27
4646668      FAIRFAX               VA        22032        SFD         7.750          7.484       $1,776.71      360        1-Nov-27
4646838      ARLINGTON             VA        22207        SFD         7.375          7.109       $1,690.78      360        1-Dec-27
4646948      CLINTON               NJ        08801        SFD         7.625          7.359       $2,654.23      360        1-Nov-27
4647199      RANDOLPH TOWNSHIP     NJ        07869        SFD         7.875          7.609       $1,914.19      360        1-Dec-27
4647247      NEW FAIRFIELD         CT        06812        SFD         7.625          7.359       $1,946.44      360        1-Dec-27
4647663      NEWTOWN               CT        06470        SFD         7.625          7.359       $1,203.25      360        1-Dec-27
4647902      CAMAS                 WA        98607        SFD         8.625          8.359       $2,105.87      360        1-Apr-27
4648070      HUNTINGTON BEACH      CA        92649        SFD         7.750          7.484       $2,063.27      360        1-Nov-27
4648179      DANA POINT            CA        92629        LCO         7.875          7.609       $2,175.21      360        1-Nov-27
4648402      SCOTTSDALE            AZ        85331        SFD         8.000          7.734       $2,076.55      360        1-Nov-27
4648473      DAYTON                OH        45458        SFD         8.375          8.109       $1,740.57      360        1-Oct-27
4648475      CHERRY HILL           NJ        08002        SFD         7.875          7.609        $568.46       360        1-Nov-27
4648484      ORONO                 MN        55364        SFD         7.875          7.609       $1,993.94      360        1-Dec-27
4648699      MARTINSVILLE          NJ        08836        SFD         7.625          7.359       $2,010.14      360        1-Dec-27
4648771      OCEANSIDE             NY        11572        SFD         8.250          7.984        $751.27       360        1-Dec-27
4648956      NORTHFIELD            NJ        08225        SFD         8.000          7.734       $2,091.11      240        1-Oct-17
4649139      SCARSDALE             NY        10583        SFD         7.850          7.584       $1,784.47      360        1-Sep-27
4649210      LAGUNA NIGUEL         CA        92677        SFD         7.550          7.284       $2,192.25      360        1-Sep-27
4649229      SAN RAFAEL            CA        94903        SFD         7.750          7.484       $1,947.21      360        1-Sep-27
4649262      POQUOTT               NY        11733        SFD         7.800          7.534       $3,628.15      360        1-Sep-27
4649302      LAGUNA NIGUEL         CA        92677        SFD         7.550          7.284       $2,602.59      360        1-Sep-27
4649306      ALPHARETTA            GA        30202        SFD         7.875          7.609       $1,873.58      360        1-Dec-27
4649336      COTO DE CAZA          CA        92679        SFD         7.600          7.334       $1,953.71      360        1-Sep-27
4649365      NEWPORT BEACH         CA        92660        SFD         7.500          7.234       $2,293.43      360        1-Sep-27
4649372      CHICAGO               IL        60625        SFD         7.550          7.284       $1,967.40      360        1-Sep-27
4649378      HOUSTON               TX        77056        SFD         7.750          7.484       $1,710.08      360        1-Sep-27
4649405      SARASOTA              FL        34231        SFD         7.700          7.434       $2,302.87      360        1-Sep-27
4649529      MAPLEWOOD             NJ        07040        SFD         7.625          7.359       $1,698.71      360        1-Nov-27
4649590      HOLMDEL               NJ        07733        LCO         7.375          7.109       $1,602.37      360        1-Dec-27
4649602      MISSOULA              MT        59802        SFD         7.875          7.609       $1,798.18      360        1-Dec-27
4649701      BEND                  OR        97701        SFD         8.125          7.859       $1,744.87      360        1-Dec-27
4649812      DRAPER                UT        84020        SFD         7.750          7.484       $1,697.90      360        1-Nov-27
4649816      HUNTINGTON            NY        11743        SFD         7.875          7.609       $1,943.19      360        1-Nov-27
4649886      BASKING RIDGE         NJ        07920        SFD         7.500          7.234       $1,817.96      360        1-Dec-27
4650053      CHADDS FORD           PA        19317        SFD         7.250          6.984       $1,991.96      360        1-Sep-27
4650217      BROWNSBURG            IN        46112        SFD         7.875          7.609       $1,673.49      355        1-Jun-27
4650233      HAYDEN LAKE           ID        83835        SFD         7.750          7.484       $1,869.84      360        1-Dec-27
4650635      PASADENA              CA        91107        SFD         7.800          7.534       $2,246.00      360        1-Sep-27
4650639      DULUTH                GA        30096        SFD         7.875          7.609       $3,625.35      360        1-Oct-27
4650670      GRANITE BAY           CA        95746        SFD         8.050          7.784       $2,174.90      360        1-Sep-27
4650862      JOPLIN                MO        64804        SFD         7.750          7.484       $1,791.04      360        1-Nov-27
4650965      SANTA BARBARA         CA        93105        SFD         7.600          7.334       $2,259.44      360        1-Sep-27
4650967      OXNARD                CA        93030        SFD         7.900          7.634       $2,151.35      360        1-Sep-27
4650975      ENCINITAS             CA        92024        SFD         7.600          7.334       $2,612.48      360        1-Sep-27
4650979      GRANITE BAY           CA        95746        SFD         7.850          7.584       $2,893.34      360        1-Sep-27
4650992      CANYON LAKE           CA        92587        SFD         7.650          7.384       $2,327.21      360        1-Sep-27
4651034      BEVERLY               MA        01915        SFD         7.625          7.359       $2,109.23      360        1-Dec-27
4651310      OOLTEWAH              TN        37363        SFD         7.750          7.484       $1,869.84      360        1-Nov-27
4651525      DANVILLE              CA        94526        SFD         7.500          7.234       $2,272.45      360        1-Nov-27
4651574      FOREST HILLS          NY        11375        SFD         7.875          7.609       $3,625.35      360        1-Nov-27
4651655      AUSTIN                TX        78731        SFD         7.375          7.109       $2,020.92      360        1-Dec-27
4651916      SHREWSBURY            MA        01545        SFD         7.875          7.609       $2,900.28      360        1-Nov-27
4651968      BRADLEY BEACH         NJ        07720        SFD         8.000          7.734        $851.17       360        1-Nov-27
4652028      PEORIA                AZ        85382        SFD         8.000          7.734       $1,819.00      360        1-Oct-27
4652039      PARKER                CO        80134        SFD         7.625          7.359       $1,898.30      360        1-Oct-27
4652089      MODESTO               CA        95358        SFD         7.750          7.484       $3,079.14      360        1-Nov-27
4652225      SHARON                MA        02067        SFD         7.500          7.234       $1,692.10      360        1-Dec-27
4652310      DIX HILLS             NY        11746        SFD         6.875          6.609       $1,802.62      360        1-Dec-27
4652346      FISHERS               IN        46038        SFD         7.875          7.609       $1,942.71      355        1-Jun-27
4652586      HOWARD BEACH          NY        11414        SFD         8.000          7.734       $1,438.18      360        1-Dec-27
4652854      LEMONT                IL        60439        SFD         8.250          7.984       $1,502.53      360        1-Nov-27
4652857      WHITEFISH             MT        59937        SFD         7.375          7.109       $1,864.82      360        1-Nov-27
4652898      WILLOW SPRING         NC        27592        SFD         7.875          7.609       $2,039.26      360        1-Nov-27
4652949      GLEN RIDGE BOROUGH    NJ        07028        SFD         7.875          7.609       $1,667.66      360        1-Dec-27
4652954      FLORENCE              OR        97439        SFD         7.875          7.609       $1,703.91      360        1-Nov-27
4653490      LAS VEGAS             NV        89134        SFD         7.875          7.609       $2,175.21      360        1-Nov-27
4653525      LONGMONT              CO        80503        SFD         7.375          7.109       $1,647.77      360        1-Nov-27
4653583      LAGUNA NIGUEL         CA        92677        PUD         7.875          7.609       $3,023.54      360        1-Nov-27
4653638      RIDGEFIELD            CT        06877        SFD         7.750          7.484       $1,648.47      360        1-Dec-27
4653773      PROVO                 UT        84604        SFD         7.875          7.609       $2,784.27      360        1-Nov-27
4653896      HATTIESBURG           MS        39402        SFD         7.625          7.359       $2,399.10      240        1-Oct-17
4653980      MOORPARK              CA        93021        SFD         8.375          8.109       $2,163.17      360        1-Nov-27
4654038      DOBBS FERRY           NY        10522        PUD         8.125          7.859        $720.22       360        1-Nov-27
4654059      SAN JUAN CAPISTRANO   CA        92675        SFD         7.625          7.359       $2,069.59      360        1-Nov-27
4654175      FORT WORTH            TX        76109        SFD         7.750          7.484       $2,351.27      360        1-Nov-27
4654176      NAPERVILLE            IL        60564        SFD         7.375          7.109       $1,630.00      360        1-Nov-27
4654207      WOODMERE              NY        11598        SFD         8.250          7.984       $2,148.62      360        1-Oct-27
4654482      CHICAGO               IL        60601        HCO         7.625          7.359       $1,960.59      360        1-Dec-27
4654506      LAKE LOTAWANA         MO        64086        SFD         7.625          7.359       $2,979.81      360        1-Nov-27
4654514      SEATTLE               WA        98105        SFD         7.750          7.484       $1,791.04      360        1-Sep-27
4654539      DIX HILLS             NY        11746        SFD         8.000          7.734       $2,113.25      360        1-Sep-27
4654560      GIG HARBOR            WA        98329        SFD         7.850          7.584       $2,115.76      360        1-Sep-27
4654580      ARMONK                NY        10504        SFD         7.400          7.134       $1,791.19      360        1-Sep-27
4654600      WELLINGTON            FL        33414        SFD         8.375          8.109        $689.77       360        1-Oct-27
4654695      MAUMELLE              AR        72113        SFD         7.500          7.234       $1,957.80      360        1-Nov-27
4654705      NORTH OAKS            MN        55127        SFD         7.500          7.234       $2,660.52      360        1-Nov-27
4654713      SIMSBURY              CT        06070        SFD         7.000          6.734       $2,454.97      360        1-Nov-27
4654734      OXFORD                MS        38655        SFD         7.500          7.234       $1,758.35      360        1-Nov-27
4654955      AGOURA HILLS          CA        91301        SFD         7.875          7.609       $1,914.19      360        1-Nov-27
4655131      SAN JOSE              CA        95129        PUD         7.750          7.484       $2,063.27      360        1-Nov-27
4655137      JERICHO               NY        11753        SFD         7.750          7.484        $902.68       360        1-Nov-27
4655267      MELVILLE              NY        11747        SFD         8.000          7.734       $1,860.83      360        1-Dec-27
4655357      WOODLAND HILLS        CA        91364        SFD         7.750          7.484       $1,094.68      360        1-Nov-27
4655433      CONWAY                AR        72032        SFD         7.750          7.484       $2,005.95      360        1-Nov-27
4655524      EAST HAMPTON          NY        11937        SFD         8.000          7.734       $1,281.28      360        1-Dec-27
4655702      STERLING              VA        20165        SFD         7.375          7.109       $1,809.57      360        1-Nov-27
4655705      SUNNYVALE             CA        94087        SFD         8.400          8.134        $799.93       360        1-Sep-27
4655720      POWAY                 CA        92064        SFD         7.650          7.384       $2,253.42      360        1-Sep-27
4655730      RICHWOOD              KY        41094        SFD         8.000          7.734       $5,649.99      360        1-Dec-27
4655746      WEST COVINA           CA        91791        SFD         7.800          7.534       $1,160.44      360        1-Sep-27
4655753      SANTA BARBARA         CA        93109        SFD         7.800          7.534       $1,439.75      360        1-Sep-27
4655763      MORGAN HILL           CA        95037        SFD         7.750          7.484       $2,170.02      360        1-Sep-27
4655770      SAN JOSE              CA        95117        SFD         8.000          7.734        $807.15       360        1-Sep-27
4655777      LOMITA                CA        90717        SFD         7.700          7.434        $819.91       360        1-Sep-27
4655783      LOS ANGELES           CA        90066        SFD         7.650          7.384       $1,805.01      360        1-Sep-27
4655788      SAN CLEMENTE          CA        92672        SFD         7.850          7.584       $1,193.51      360        1-Sep-27
4655793      PLEASANTON            CA        94566        SFD         7.650          7.384       $2,349.92      360        1-Sep-27
4655798      SANTA BARBARA         CA        93105        SFD         7.650          7.384       $1,675.88      360        1-Sep-27
4655805      SOUTH PASADENA        CA        91030        SFD         7.550          7.284        $878.31       360        1-Sep-27
4655811      SHERMAN OAKS          CA        91403        SFD         7.950          7.684       $1,749.76      360        1-Sep-27
4655820      AUBURN                CA        95602        SFD         7.950          7.684       $3,651.41      360        1-Sep-27
4655821      SAN JOSE              CA        95139        SFD         7.550          7.284       $1,874.65      360        1-Sep-27
4655824      SAN CARLOS            CA        94070        LCO         7.700          7.434       $2,700.70      360        1-Sep-27
4655848      MECHANICSBURG         PA        17055        SFD         7.625          7.359       $1,642.09      360        1-Nov-27
4655905      LOS ANGELES           CA        90025        LCO         7.625          7.359       $1,061.70      360        1-Nov-27
4655927      SANTA CLARA           CA        95051        SFD         7.850          7.584       $2,112.14      360        1-Sep-27
4655928      APTOS                 CA        95003        SFD         7.800          7.534       $2,145.22      360        1-Sep-27
4655929      SANTA CRUZ            CA        95060        SFD         7.500          7.234       $1,594.21      360        1-Sep-27
4655931      NEWPORT BEACH         CA        92625        SFD         8.000          7.734       $2,568.18      360        1-Sep-27
4655933      NEWPORT BEACH         CA        92660        SFD         7.650          7.384       $2,998.41      360        1-Sep-27
4655934      WALNUT CREEK          CA        94598        SFD         7.400          7.134       $2,160.23      360        1-Sep-27
4655935      AGOURA HILLS          CA        91301        SFD         7.750          7.484       $1,882.74      360        1-Sep-27
4655936      GLENDALE              CA        91206        SFD         8.050          7.784       $2,158.68      360        1-Sep-27
4655943      OLYMPIA FIELDS        IL        60461        SFD         7.850          7.584       $2,849.94      360        1-Sep-27
4655944      FOSTER CITY           CA        94404        SFD         7.850          7.584       $2,360.97      360        1-Sep-27
4655946      OCEANSIDE             CA        92054        LCO         7.950          7.684       $1,095.43      360        1-Sep-27
4655949      SAN JOSE              CA        95120        SFD         7.400          7.134       $1,730.95      360        1-Sep-27
4655954      MOUNTAIN VIEW         CA        94040        SFD         7.450          7.184       $2,957.13      360        1-Sep-27
4655958      PACIFIC GROVE         CA        93950        SFD         7.700          7.434        $973.20       360        1-Sep-27
4655959      SAN LUIS OBISPO       CA        93401        SFD         8.050          7.784       $3,096.47      360        1-Sep-27
4655960      FREMONT               CA        94536        SFD         7.650          7.384       $2,327.21      360        1-Sep-27
4655963      BELMONT               CA        94002        SFD         7.900          7.634       $1,869.35      360        1-Sep-27
4655967      LOS ANGELES           CA        90045        SFD         8.050          7.784       $2,138.04      360        1-Sep-27
4655970      SCOTTSDALE            AZ        85258        SFD         7.625          7.359       $2,831.18      360        1-Dec-27
4655976      TEANECK               NJ        07666        LCO         8.375          8.109       $1,812.78      360        1-Nov-27
4656053      SARATOGA              CA        95070        SFD         7.250          6.984       $1,835.06      360        1-Dec-27
4656077      HOUSTON               TX        77042        SFD         7.625          7.359       $3,764.76      360        1-Nov-27
4656172      FALLBROOK             CA        92028        SFD         7.850          7.584       $1,193.51      360        1-Aug-27
4656178      INDIAN WELLS          CA        92210        SFD         7.700          7.434       $1,069.45      360        1-Sep-27
4656193      DANA POINT            CA        92629        LCO         7.850          7.584        $593.14       360        1-Sep-27
4656215      CORONA                CA        91720        SFD         7.850          7.584       $1,012.67      360        1-Sep-27
4656220      IRVINE                CA        92620        LCO         8.000          7.734        $366.89       360        1-Nov-27
4656223      SAN MARINO            CA        91108        SFD         7.650          7.384        $567.62       360        1-Sep-27
4656234      HILLSBOROUGH          CA        94010        SFD         7.850          7.584       $3,689.01      360        1-Sep-27
4656236      HOUSTON               TX        77019        SFD         7.625          7.359       $3,468.19      360        1-Dec-27
4656248      LOS ANGELES           CA        90064        SFD         7.600          7.334       $1,412.15      360        1-Sep-27
4656273      WASHINGTON            DC        20016        SFD         7.375          7.109       $2,336.21      360        1-Nov-27
4656285      ALTADENA              CA        91001        SFD         7.600          7.334       $1,080.30      360        1-Sep-27
4656313      PALO ALTO             CA        94306        SFD         7.800          7.534       $1,871.67      360        1-Sep-27
4656322      LOS ANGELES           CA        90027        SFD         7.700          7.434       $1,363.18      360        1-Sep-27
4656330      WALNUT                CA        91789        SFD         8.250          7.984        $796.35       360        1-Sep-27
4656331      SAN JOSE              CA        95120        SFD         7.650          7.384       $2,483.31      360        1-Sep-27
4656342      LOS ALTOS             CA        94024        SFD         7.450          7.184       $3,360.69      360        1-Sep-27
4656350      MORAGA                CA        94556        SFD         7.500          7.234       $3,195.42      360        1-Sep-27
4656352      SAN JOSE              CA        95120        SFD         7.500          7.234       $2,097.65      360        1-Sep-27
4656359      LOS ALTOS             CA        94024        SFD         7.850          7.584       $3,298.41      360        1-Sep-27
4656362      BELMONT               CA        94002        SFD         7.550          7.284       $3,815.35      360        1-Sep-27
4656372      WESTLAKE VILLAGE      CA        91361        SFD         7.700          7.434       $2,780.55      360        1-Sep-27
4656378      TUSTIN                CA        92782        SFD         8.000          7.734       $1,895.31      360        1-Nov-27
4656428      HARRISON              ID        83833        SFD         7.750          7.484       $2,206.55      360        1-Nov-27
4656437      SAN DIEGO             CA        92115        SFD         7.750          7.484       $1,933.24      360        1-Nov-27
4656513      NORTHRIDGE            CA        91326        SFD         7.750          7.484       $1,662.08      360        1-Sep-27
4656514      SAN JOSE              CA        95117        SFD         7.450          7.184       $1,669.91      360        1-Aug-27
4656517      MORAGA                CA        94556        SFD         7.750          7.484       $2,636.40      360        1-Sep-27
4656520      BEVERLY HILLS         CA        90210        LCO         7.700          7.434       $2,809.07      360        1-Sep-27
4656523      SAN JOSE              CA        95120        SFD         7.900          7.634       $2,314.88      360        1-Sep-27
4656527      WALNUT CREEK          CA        94596        SFD         7.650          7.384       $1,697.16      360        1-Sep-27
4656528      GILROY                CA        95020        SFD         7.700          7.434       $1,853.70      360        1-Sep-27
4656529      LOS ALAMITOS          CA        90720        SFD         7.500          7.234       $2,377.33      360        1-Sep-27
4656531      GLENDALE              CA        91206        SFD         7.650          7.384       $2,951.58      360        1-Sep-27
4656532      GARDEN GROVE          CA        92840        SFD         7.750          7.484       $1,658.50      360        1-Sep-27
4656533      FREMONT               CA        94536        SFD         7.500          7.234       $1,845.93      360        1-Sep-27
4656537      NEWPORT BEACH         CA        92663        SFD         7.400          7.134       $1,807.12      360        1-Sep-27
4656538      SAN JOSE              CA        95120        SFD         7.850          7.584       $1,685.38      360        1-Sep-27
4656540      NEWPORT BEACH         CA        92625        SFD         7.350          7.084       $3,516.52      360        1-Sep-27
4656542      RANCHO CUCAMONGA      CA        91737        SFD         7.875          7.609       $1,664.03      360        1-Nov-27
4656544      DANVILLE              CA        94526        SFD         7.900          7.634       $1,878.07      360        1-Sep-27
4656545      MORGAN HILL           CA        95037        SFD         7.700          7.434       $2,623.70      360        1-Sep-27
4656562      RENO                  NV        89511        SFD         7.000          6.734       $2,959.27      360        1-Nov-27
4656669      WASHINGTON            DC        20009        LCO         7.750          7.484       $1,740.88      360        1-Nov-27
4656739      SAN ANSELMO           CA        94960        SFD         7.600          7.334       $1,784.96      360        1-Sep-27
4656741      MOLINA                CO        81643        SFD         7.875          7.609       $2,117.21      360        1-Dec-27
4656743      BOULDER               CO        80302        SFD         7.500          7.234       $3,565.99      360        1-Nov-27
4656762      AGOURA HILLS          CA        91301        SFD         7.400          7.134       $2,042.53      360        1-Sep-27
4656771      CAMARILLO             CA        93010        SFD         7.500          7.234       $1,762.03      360        1-Sep-27
4656780      SAN JOSE              CA        95125        SFD         7.950          7.684       $3,651.41      360        1-Sep-27
4656795      SARATOGA              CA        95070        SFD         7.625          7.359       $4,402.48      360        1-Nov-27
4656817      FULLERTON             CA        92807        SFD         7.750          7.484       $2,435.81      360        1-Sep-27
4656850      IRVINE                CA        92612        PUD         7.625          7.359       $2,855.95      360        1-Nov-27
4656862      ROCKVILLE CENTRE      NY        11570        SFD         7.875          7.609       $1,812.67      360        1-Nov-27
4656891      CORONA DEL MAR        CA        92625        PUD         7.500          7.234       $2,964.67      360        1-Nov-27
4656902      TORRANCE              CA        90503        LCO         7.850          7.584        $980.12       360        1-Sep-27
4656913      CUDJOE KEY            FL        33042        SFD         7.250          6.984       $1,739.55      360        1-Nov-27
4656929      BELLAIRE              TX        77401        SFD         7.625          7.359       $4,416.64      360        1-Nov-27
4656943      LOS GATOS             CA        95033        SFD         7.250          6.984       $1,619.49      360        1-Nov-27
4656979      SAN CARLOS            CA        94070        SFD         7.500          7.234       $2,125.62      360        1-Nov-27
4657006      BELLAIRE              TX        77401        SFD         7.625          7.359       $1,741.18      360        1-Nov-27
4657032      GARDEN CITY           NY        11530        SFD         7.875          7.609       $3,625.35      360        1-Dec-27
4657051      SAN DIEGO             CA        92014        SFD         7.625          7.359       $2,643.61      360        1-Nov-27
4657074      DELRAY BEACH          FL        33484        SFD         7.800          7.534        $323.95       360        1-Sep-27
4657099      YORBA LINDA           CA        92887        SFD         7.625          7.359       $2,000.23      360        1-Nov-27
4657101      BOYNTON BEACH         FL        33437        SFD         7.750          7.484       $1,182.09      360        1-Sep-27
4657119      BELLINGHAM            WA        98226        SFD         7.250          6.984       $1,705.44      360        1-Nov-27
4657127      N. MIAMI BEACH        FL        33160        HCO         8.550          8.284        $463.48       360        1-Sep-27
4657135      BERKELEY              CA        94705        SFD         7.500          7.234       $3,321.27      360        1-Nov-27
4657177      PACIFIC GROVE         CA        93950        SFD         7.600          7.334        $847.29       360        1-Sep-27
4657199      SHERMAN OAKS          CA        91423        SFD         7.600          7.334       $1,694.58      360        1-Sep-27
4657219      EL PASO               TX        79936        SFD         7.875          7.609       $1,946.09      360        1-Nov-27
4657230      MONTEBELLO            CA        90640        SFD         7.600          7.334        $833.88       360        1-Sep-27
4657262      MILLBRAE              CA        94030        SFD         7.625          7.359       $2,314.49      360        1-Nov-27
4657299      BLAINE COUNTY         ID        83333        SFD         7.375          7.109       $3,695.12      360        1-Nov-27
4657306      MOUNT VERNON          WA        98273        SFD         7.375          7.109       $1,899.36      360        1-Nov-27
4657315      PAYSON                UT        84651        SFD         7.375          7.109       $2,078.93      360        1-Nov-27
4657377      SAN FRANCISCO         CA        94118        SFD         7.500          7.234       $2,622.06      360        1-Sep-27
4657380      CANYON LAKE           CA        92587        SFD         7.800          7.534       $2,378.46      360        1-Sep-27
4657385      SUNNYVALE             CA        94087        SFD         7.350          7.084       $2,671.15      360        1-Sep-27
4657396      WEST HOLLYWOOD        CA        90069        HCO         7.750          7.484       $2,206.55      360        1-Sep-27
4657405      SANTA MARIA           CA        93454        SFD         7.550          7.284        $562.12       360        1-Sep-27
4657416      MONTEREY              CA        93940        SFD         7.900          7.634       $2,434.80      360        1-Sep-27
4657424      GLENDALE              CA        91208        SFD         7.450          7.184       $1,999.72      360        1-Sep-27
4657445      HAYWARD               CA        94542        SFD         7.500          7.234       $1,873.90      360        1-Sep-27
4657467      TAFT                  CA        93268        SFD         7.700          7.434        $309.43       360        1-Sep-27
4657472      BEAVERTON             OR        97007        SFD         7.650          7.384        $567.62       360        1-Sep-27
4657484      VISALIA               CA        93277        SFD         7.850          7.584        $290.79       360        1-Sep-27
4657492      SUWANEE               GA        30174        SFD         7.500          7.234       $1,913.75      360        1-Dec-27
4657536      DANA POINT            CA        92624        SFD         8.375          8.109       $1,178.12      360        1-Nov-27
4657674      MUKILTEO              WA        98275        SFD         7.250          6.984       $2,251.18      360        1-Dec-27
4657699      BRISBANE              CA        94005        SFD         7.500          7.234       $2,461.24      360        1-Nov-27
4657933      ALPHARETTA            GA        30302        SFD         8.250          7.984       $1,913.48      360        1-Nov-27
4657940      DUBLIN                OH        43017        SFD         7.500          7.234       $1,901.86      360        1-Nov-27
4658005      GERMANTOWN            TN        38138        SFD         7.625          7.359       $3,488.01      360        1-Nov-27
4658028      LONG BEACH            CA        90802        HCO         7.875          7.609       $2,229.59      360        1-Dec-27
4658157      WINDERMERE            FL        34786        SFD         7.750          7.484       $1,888.46      360        1-Nov-27
4658277      SALT LAKE CITY        UT        84117        SFD         7.750          7.484       $3,223.86      360        1-Nov-27
4658292      PARK CITY             UT        84060        SFD         7.500          7.234       $1,887.88      360        1-Dec-27
4658351      WASHINGTON            DC        20009        SFD         7.375          7.109       $2,427.38      360        1-Oct-27
4658369      CAMBRIA               CA        93428        SFD         7.750          7.484       $1,647.75      360        1-Nov-27
4658501      FALLBROOK             CA        92028        SFD         7.750          7.484       $2,224.46      360        1-Nov-27
4658509      SCOTTSDALE            AZ        85262        SFD         8.000          7.734       $2,276.50      360        1-Nov-27
4658520      BELLEVUE              WA        98005        SFD         7.500          7.234       $1,706.08      360        1-Nov-27
4658527      LONG BEACH            CA        90802        HCO         8.000          7.734       $1,986.67      360        1-Nov-27
4658581      OMAHA                 NE        68154        SFD         7.625          7.359       $3,001.05      360        1-Dec-27
4658624      LAKE OSWEGO           OR        97034        LCO         7.875          7.609        $745.74       360        1-Nov-27
4658741      ENCINITAS             CA        92024        SFD         8.125          7.859       $1,863.67      360        1-Nov-27
4658785      BATON ROUGE           LA        70809        SFD         7.375          7.109       $3,677.85      360        1-Nov-27
4658824      BOYNTON BEACH         FL        33436        LCO         7.875          7.609        $725.07       360        1-Nov-27
4658867      NESBIT                MS        38651        SFD         7.375          7.109       $1,878.64      360        1-Nov-27
4658972      MIAMI                 FL        33176        SFD         7.250          6.984       $1,739.55      360        1-Dec-27
4659005      DELTONA               FL        32725        SFD         8.375          8.109        $433.25       360        1-Nov-27
4659043      SANTA CRUZ            CA        95062        SFD         8.100          7.834       $1,348.17      360        1-Oct-27
4659069      KEIZER                OR        97303        SFD         7.750          7.484        $464.96       360        1-Oct-27
4659075      MORGAN HILL           CA        95037        SFD         7.550          7.284       $2,495.79      360        1-Oct-27
4659084      NEW YORK              NY        10011        COP         8.800          8.534        $308.21       360        1-Jul-27
4659094      BERKELEY              CA        94707        SFD         7.250          6.984       $2,524.06      360        1-Nov-27
4659117      OLNEY                 MD        20832        SFD         7.500          7.234       $2,333.98      360        1-Dec-27
4659119      GREENLAWN             NY        11740        SFD         7.950          7.684       $1,889.24      360        1-Aug-27
4659140      SUNNYVALE             CA        94087        PUD         7.750          7.484       $2,493.12      360        1-Jul-27
4659196      RAMONA                CA        92065        SFD         7.600          7.334       $1,853.45      360        1-Oct-27
4659210      PLEASANTVILLE         NY        10570        SFD         8.400          8.134       $1,904.60      360        1-Aug-27
4659212      HOUSTON               TX        77067        SFD         8.050          7.784       $1,916.86      360        1-Oct-27
4659225      OAK PARK              IL        60302        SFD         8.050          7.784       $2,322.35      360        1-Oct-27
4659228      PARK CITY             UT        84098        SFD         7.875          7.609       $1,685.79      360        1-Nov-27
4659230      PARK RIDGE            IL        60068        SFD         7.900          7.634        $864.90       360        1-Oct-27
4659234      MAHOPAC               NY        10541        SFD         7.400          7.134        $643.92       360        1-Oct-27
4659246      PACIFIC               MO        63069        SFD         7.625          7.359       $2,487.19      360        1-Dec-27
4659248      SCHAUMBURG            IL        60193        SFD         8.000          7.734       $1,207.05      360        1-Oct-27
4659251      COSTA MESA            CA        92626        SFD         7.750          7.484       $2,457.30      360        1-Oct-27
4659265      MIAMI BEACH           FL        33140        HCO         8.500          8.234        $653.58       360        1-Aug-27
4659266      NORTH SALT LAKE       UT        84054        SFD         7.750          7.484       $2,292.52      360        1-Nov-27
4659283      ANCHORAGE             AK        99516        SFD         7.875          7.609       $4,712.95      360        1-Nov-27
4659297      ALTADENA              CA        91001        SFD         7.750          7.484       $1,096.12      360        1-Oct-27
4659298      AUSTIN                TX        78731        SFD         7.625          7.359       $3,443.42      360        1-Dec-27
4659302      HOUSTON               TX        77063        THS         7.750          7.484        $483.58       360        1-Aug-27
4659309      MANHATTAN BEACH       CA        90266        SFD         7.650          7.384       $2,741.57      360        1-Oct-27
4659318      SAN FRANCISCO         CA        94118        SFD         7.750          7.484       $2,435.80      360        1-Nov-27
4659327      IRVINE                CA        92620        SFD         7.700          7.434       $1,996.29      360        1-Oct-27
4659336      MERIDIAN              MS        39305        SFD         8.000          7.734       $2,175.62      360        1-Nov-27
4659345      SAN JOSE              CA        95123        SFD         7.650          7.384       $1,781.60      360        1-Oct-27
4659356      ISLIP                 NY        11751        SFD         8.250          7.984       $1,051.77      360        1-Nov-27
4659359      SAN RAMON             CA        94583        SFD         7.950          7.684       $2,475.66      360        1-Oct-27
4659370      FORT LAUDERDALE       FL        33308        LCO         8.100          7.834        $238.53       360        1-Oct-27
4659388      DIX HILLS             NY        11746        SFD         8.000          7.734       $1,078.64      360        1-Aug-27
4659423      TULSA                 OK        74131        SFD         7.625          7.359       $2,378.19      360        1-Nov-27
4659469      BRENTWOOD             TN        37027        SFD         7.750          7.484       $3,718.18      360        1-Nov-27
4659570      DANA POINT            CA        92624        SFD         7.750          7.484       $2,005.96      360        1-Dec-27
4659588      WOODLAND HILLS        CA        91364        SFD         8.000          7.734       $1,801.40      360        1-Oct-27
4659593      WALNUT CREEK          CA        94595        SFD         8.050          7.784       $3,398.74      360        1-Oct-27
4659602      PACIFIC PALISADES     CA        90272        SFD         8.050          7.784       $3,354.51      360        1-Aug-27
4659603      CARLSBAD              CA        92009        LCO         7.950          7.684        $884.38       360        1-Jul-27
4659604      LOS ANGELES           CA        90293        HCO         8.150          7.884        $186.07       360        1-Oct-27
4659605      SAN JOSE              CA        95126        SFD         7.800          7.534       $2,015.64      360        1-Aug-27
4659608      NEW CITY              NY        10956        SFD         7.950          7.684       $1,022.40      360        1-Aug-27
4659611      WALNUT CREEK          CA        94598        SFD         7.550          7.284       $2,557.62      360        1-Oct-27
4659613      SIERRA MADRE          CA        91024        SFD         7.950          7.684        $876.34       360        1-Oct-27
4659614      OREGON CITY           OR        97045        SFD         8.050          7.784       $1,798.90      360        1-Oct-27
4659616      CANYON LAKE           CA        92587        SFD         7.850          7.584        $542.51       360        1-Oct-27
4659621      ROHNERT PARK          CA        94928        SFD         8.000          7.734        $755.78       360        1-Oct-27
4659624      ST GEORGE             UT        84770        SFD         7.250          6.984       $1,638.93      360        1-Nov-27
4659632      CUPERTINO             CA        95014        SFD         7.600          7.334       $1,941.71      360        1-Oct-27
4659634      WEST PALM BEACH       FL        33405        SFD         8.000          7.734       $1,896.05      360        1-Aug-27
4659639      LOS ANGELES           CA        90049        SFD         7.500          7.234       $3,531.04      360        1-Oct-27
4659642      NEW YORK              NY        10016        COP         8.850          8.584        $803.38       360        1-Aug-27
4659667      SARASOTA              FL        34241        SFD         8.150          7.884       $1,488.50      360        1-Jul-27
4659670      MIAMI BEACH           FL        33140        HCO         8.350          8.084        $454.99       360        1-Aug-27
4659680      MANHATTAN BEACH       CA        90266        SFD         7.850          7.584       $1,938.54      360        1-Aug-27
4659683      PACIFIC GROVE         CA        93950        SFD         8.400          8.134       $1,174.00      360        1-Jul-27
4659688      NEW YORK              NY        10012        COP         8.250          7.984        $478.56       360        1-Oct-27
4659689      BERKELEY HEIGHTS      NJ        07922        LCO         7.625          7.359       $1,794.97      360        1-Dec-27
4659691      SAN GABRIEL           CA        91775        SFD         7.600          7.334       $1,818.85      360        1-Oct-27
4659695      CHULA VISTA           CA        91910        SFD         7.650          7.384       $1,669.49      360        1-Oct-27
4659704      AGOURA HILLS          CA        91301        SFD         7.900          7.634       $1,962.38      360        1-Oct-27
4659708      BRADENTON             FL        34203        SFD         8.350          8.084        $549.78       360        1-Jul-27
4659711      LAKE WORTH            FL        33467        SFD         8.050          7.784        $685.65       360        1-Oct-27
4659716      LOS ANGELES           CA        90036        SFD         7.900          7.634       $2,465.33      360        1-Oct-27
4659720      LOS ANGELES           CA        91403        LCO         7.850          7.584        $578.67       360        1-Oct-27
4659730      NEWPORT BEACH         CA        92660        SFD         7.450          7.184       $2,678.81      360        1-Oct-27
4659742      SANTA BARBARA         CA        93110        SFD         7.850          7.584       $1,880.68      360        1-Oct-27
4659743      SANTA BARBARA         CA        93105        SFD         7.800          7.534       $2,195.61      360        1-Oct-27
4659745      REDMOND               WA        98052        SFD         7.750          7.484       $2,095.51      360        1-Nov-27
4659747      MOUNTAIN VIEW         CA        94043        LCO         7.950          7.684       $2,339.83      360        1-Oct-27
4659753      HUNTINGTON BEACH      CA        92648        SFD         7.750          7.484       $3,008.94      360        1-Oct-27
4659754      AGOURA HILLS          CA        91301        SFD         7.950          7.684       $2,991.24      360        1-Oct-27
4659759      REDWOOD CITY          CA        94065        LCO         7.750          7.484       $2,417.90      360        1-Oct-27
4659761      MIAMI BEACH           FL        33147        SFD         8.150          7.884       $1,302.44      360        1-Jul-27
4659763      HUNTINGTON BEACH      CA        92648        SFD         7.750          7.484       $1,627.69      360        1-Oct-27
4659789      SARASOTA              FL        34243        SFD         8.150          7.884        $520.98       360        1-Jul-27
4659807      COSTA MESA            CA        92627        SFD         7.500          7.234       $2,013.74      360        1-Nov-27
4659836      BEND                  OR        97701        SFD         7.500          7.234       $1,799.78      360        1-Nov-27
4659847      WEST NYACK            NY        10994        SFD         8.125          7.859       $1,811.70      360        1-Nov-27
4659867      PEBBLE BEACH          CA        93953        LCO         7.875          7.609       $4,350.42      360        1-Nov-27
4659883      NEW ROCHELLE          NY        10804        SFD         7.450          7.184       $1,252.43      360        1-Oct-27
4659895      PARK RIDGE            IL        60068        SFD         7.900          7.634       $2,979.91      360        1-Oct-27
4659915      LOS GATOS             CA        95032        SFD         7.700          7.434       $2,067.59      360        1-Oct-27
4659922      SANTA ANA             CA        92705        SFD         8.100          7.834       $2,311.14      360        1-Oct-27
4659931      SAN JOSE              CA        95123        SFD         8.100          7.834        $740.75       360        1-Oct-27
4659936      LARGO                 FL        33774        SFD         7.625          7.359       $1,821.16      360        1-Dec-27
4659937      WEST HILLS            CA        91307        SFD         7.950          7.684       $2,424.54      360        1-Aug-27
4659960      SPRINGFIELD GARDENS   NY        11411        SFD         8.050          7.784        $737.26       360        1-Oct-27
4659972      SANTA BARBARA         CA        93105        SFD         7.850          7.584       $1,349.02      360        1-Oct-27
4659978      WHITTIER              CA        90603        SFD         7.850          7.584        $788.44       360        1-Oct-27
4659979      SAN FRANCISCO         CA        94111        HCO         7.875          7.609       $1,776.42      360        1-Oct-27
4659981      LOS GATOS             CA        95032        SFD         7.850          7.584       $2,690.81      360        1-Oct-27
4659989      FOUNTAIN VALLEY       CA        92708        SFD         7.850          7.584       $2,242.34      360        1-Oct-27
4660003      PAYSON                UT        84651        SFD         8.000          7.734       $1,816.07      360        1-Oct-27
4660004      ROLLING HILLS ESTAT   CA        90274        SFD         7.500          7.234       $1,817.96      360        1-Oct-27
4660005      CARMEL                CA        93921        SFD         7.600          7.334       $2,195.90      360        1-Oct-27
4660012      MARINA DEL REY        CA        90292        LCO         7.800          7.534       $1,969.57      360        1-Sep-27
4660016      BOYNTON BEACH         FL        33437        SFD         7.900          7.634       $1,671.66      360        1-Oct-27
4660025      LA HABRA              CA        90631        SFD         7.650          7.384       $1,163.61      360        1-Oct-27
4660028      ELDORADO HILLS        CA        95762        SFD         7.800          7.534        $863.85       360        1-Oct-27
4660039      MOUNTAIN VIEW         CA        94040        SFD         7.750          7.484       $1,848.35      360        1-Oct-27
4660045      SAN JOSE              CA        95129        SFD         7.650          7.384       $2,253.42      360        1-Oct-27
4660048      PARRISH               FL        34219        SFD         8.200          7.934        $747.76       360        1-Jul-27
4660052      ROYAL PALM BEACH      FL        33411        SFD         7.850          7.584        $868.01       360        1-Sep-27
4660053      VENTURA               CA        93003        SFD         7.900          7.634       $1,771.23      360        1-Jul-27
4660063      EL CAJON              CA        92021        SFD         8.450          8.184        $776.86       360        1-Aug-27
4660065      DULUTH                MN        55812        SFD         7.625          7.359       $1,748.25      360        1-Nov-27
4660080      SANTA BARBARA         CA        93109        SFD         7.900          7.634       $2,649.21      360        1-Oct-27
4660083      SAN FRANCISCO         CA        94111        HCO         7.600          7.334       $3,134.98      360        1-Aug-27
4660091      EL GRANADA            CA        94018        SFD         7.700          7.434       $1,703.98      360        1-Oct-27
4660097      SAN FRANCISCO         CA        94131        SFD         7.600          7.334       $1,811.09      360        1-Aug-27
4660107      TORRANCE              CA        90505        SFD         7.550          7.284       $2,459.25      360        1-Oct-27
4660111      HOLLISTER             CA        95023        SFD         7.550          7.284       $1,963.89      360        1-Sep-27
4660118      POMPANO BEACH         FL        33062        HCO         8.200          7.934        $523.43       360        1-Jul-27
4660120      MIAMI BEACH           FL        33140        HCO         8.050          7.784        $331.77       360        1-Oct-27
4660176      SAN FRANCISCO         CA        94134        SFD         7.625          7.359       $1,804.88      360        1-Dec-27
4660183      SEATTLE               WA        98115        SFD         8.000          7.734       $1,702.33      360        1-Nov-27
4660192      PHOENIX               AZ        85048        SFD         7.875          7.609       $2,117.21      360        1-Nov-27
4660243      CAMPBELL              CA        95008        SFD         7.500          7.234       $1,608.20      360        1-Sep-27
4660244      CARMEL                CA        93923        SFD         8.050          7.784       $2,101.18      360        1-Sep-27
4660246      NEWPORT BEACH         CA        92660        SFD         7.550          7.284       $3,114.11      360        1-Sep-27
4660248      VAN NUYS              CA        91411        SFD         8.150          7.884       $2,083.90      360        1-Sep-27
4660250      MISSION VIEJO         CA        92691        SFD         7.850          7.584       $1,081.39      360        1-Sep-27
4660251      ALAMO                 CA        94507        SFD         7.850          7.584       $1,916.84      360        1-Sep-27
4660255      HACIENDA HEIGHTS      CA        91745        SFD         7.800          7.534        $712.68       360        1-Sep-27
4660260      SAN LUIS OBISPO       CA        93401        SFD         7.800          7.534        $809.86       360        1-Sep-27
4660261      SAN DIEGO             CA        92103        SFD         7.400          7.134       $1,973.29      360        1-Sep-27
4660270      PISMO BEACH           CA        93449        SFD         7.850          7.584       $3,153.75      360        1-Sep-27
4660274      RIVERSIDE             CA        92506        SFD         7.700          7.434       $1,122.92      360        1-Sep-27
4660277      NUEVO                 CA        92567        SFD         7.600          7.334        $564.86       360        1-Sep-27
4660278      LONG BEACH            CA        90803        SFD         7.550          7.284        $716.70       360        1-Sep-27
4660279      PALO ALTO             CA        94306        SFD         7.600          7.334       $2,406.31      360        1-Sep-27
4660280      MOUNTAIN VIEW         CA        94040        SFD         7.550          7.284       $2,901.91      360        1-Sep-27
4660281      PASO ROBLES           CA        93446        SFD         7.600          7.334       $1,256.82      360        1-Sep-27
4660283      SAN BRUNO             CA        94066        SFD         8.000          7.734       $1,746.36      360        1-Sep-27
4660294      ONTARIO               CA        91761        SFD         7.500          7.234        $367.09       360        1-Sep-27
4660298      PORTLAND              OR        97229        SFD         8.050          7.784       $1,851.98      360        1-Sep-27
4660299      PALO ALTO             CA        94306        SFD         7.900          7.634       $1,933.31      360        1-Oct-27
4660302      FRESNO                CA        93720        SFD         7.850          7.584        $361.67       360        1-Sep-27
4660311      DOWNEY                CA        90241        SFD         7.750          7.484       $2,435.81      360        1-Sep-27
4660326      SANTA BARBARA         CA        93108        SFD         7.800          7.534       $7,198.71      360        1-Sep-27
4660327      FAIRFAX               CA        94930        SFD         7.750          7.484       $1,740.89      360        1-Sep-27
4660333      LOS ANGELES           CA        90039        SFD         7.850          7.584        $895.13       360        1-Sep-27
4660334      THOUSAND OAKS         CA        91362        SFD         7.400          7.134       $1,686.64      360        1-Sep-27
4660350      SANTA BARBARA         CA        93108        SFD         7.700          7.434       $1,425.93      360        1-Sep-27
4660355      SIMI VALLEY           CA        93065        SFD         7.600          7.334       $1,609.86      360        1-Sep-27
4660363      AGOURA HILLS          CA        91301        SFD         7.850          7.584       $2,676.34      360        1-Sep-27
4660368      REDWOOD CITY          CA        94061        SFD         7.700          7.434       $2,331.38      360        1-Sep-27
4660370      PISMO BEACH           CA        93449        SFD         7.800          7.534       $2,130.82      360        1-Sep-27
4660378      SAN JOSE              CA        95123        SFD         8.000          7.734       $1,742.70      360        1-Sep-27
4660380      SAN LUIS OBISPO       CA        93405        SFD         7.500          7.234       $2,447.26      360        1-Sep-27
4660388      GLENDALE              CA        91208        SFD         7.550          7.284       $1,756.61      360        1-Sep-27
4660399      LOS ANGELES           CA        90024        HCO         7.800          7.534       $1,093.49      360        1-Sep-27
4660400      SAN JOSE              CA        95125        SFD         7.550          7.284       $1,897.14      360        1-Sep-27
4660406      CARMEL                CA        93923        LCO         8.150          7.884        $962.32       360        1-Sep-27
4660415      SANTA ROSA            CA        95404        SFD         7.700          7.434       $1,870.81      360        1-Sep-27
4660526      REDONDO BEACH         CA        90277        SFD         8.000          7.734       $2,472.79      360        1-Oct-27
4660560      LOS ANGELES           CA        90004        SFD         7.700          7.434       $1,639.81      360        1-Oct-27
4660582      FORT MEYERS           FL        33905        LCO         7.800          7.534        $179.97       360        1-Sep-27
4660586      CARLSBAD              CA        92009        SFD         7.875          7.609       $1,774.97      360        1-Oct-27
4660590      MT PLEASANT           NY        10532        SFD         7.800          7.534       $1,151.80      360        1-Sep-27
4660608      WEST BARNSTABLE       MA        02668        SFD         7.250          6.984       $1,664.52      360        1-Dec-27
4660621      MEDINAH               IL        60157        SFD         7.750          7.484       $1,321.79      360        1-Sep-27
4660651      BOYNTON BEACH         FL        33435        LCO         7.850          7.584        $260.41       360        1-Sep-27
4660658      PALATINE              IL        60067        SFD         7.800          7.534        $669.48       360        1-Sep-27
4660667      POMPANO BEACH         FL        33063        LCO         8.150          7.884        $375.85       360        1-Sep-27
4660671      SUGARLAND             TX        77479        SFD         7.550          7.284        $597.25       360        1-Sep-27
4660678      RIVER GROVE           IL        60171        SFD         7.800          7.534        $575.90       360        1-Sep-27
4660683      DES PLAINES           IL        60018        SFD         7.850          7.584        $723.34       360        1-Sep-27
4660696      CLEARWATER            FL        34621        LCO         8.050          7.784        $265.42       360        1-Sep-27
4660706      REDLANDS              CA        92373        SFD         7.450          7.184       $2,003.89      360        1-Sep-27
4660709      LOS ALTOS             CA        94024        SFD         7.300          7.034       $3,379.87      360        1-Sep-27
4660717      LIBERTYVILLE          IL        60048        SFD         7.950          7.684       $1,150.20      360        1-Sep-27
4660737      CHAPEL HILL           NC        27514        SFD         7.625          7.359       $2,831.18      360        1-Dec-27
4660764      LOS ANGELES           CA        90024        SFD         7.875          7.609       $3,625.35      360        1-Nov-27
4660886      LAKE OSWEGO           OR        97035        SFD         8.125          7.859        $950.40       360        1-Nov-27
4660893      BOYNTON BEACH         FL        33437        LCO         8.050          7.784        $600.87       360        1-Sep-27
4660896      ROYAL PALM BEACH      FL        33411        SFD         7.900          7.634        $635.96       360        1-Sep-27
4660902      BOCA RATON            FL        33432        SFD         8.000          7.734       $1,467.53      360        1-Sep-27
4660904      PACIFIC GROVE         CA        93950        SFD         7.850          7.584       $2,025.34      360        1-Sep-27
4660906      DUNEDIN               FL        34698        SFD         7.700          7.434        $823.47       360        1-Sep-27
4660911      MIAMI BEACH           FL        33140        SFD         7.900          7.634       $1,188.33      360        1-Sep-27
4660917      PORT RICHEY           FL        34668        SFD         7.600          7.334        $381.29       360        1-Sep-27
4660918      RONKONKOMA            NY        11779        SFD         7.900          7.634        $617.79       360        1-Sep-27
4660923      HOLLYWOOD             FL        33019        HCO         8.050          7.784        $294.91       360        1-Sep-27
4660980      RYE BROOK             NY        10573        SFD         7.250          6.984       $1,705.45      360        1-Sep-27
4660990      LOS ALTOS             CA        94022        SFD         7.250          6.984       $2,544.52      360        1-Sep-27
4661019      PLAINVIEW             NY        11803        SFD         8.250          7.984       $1,310.21      360        1-Dec-27
4661094      PORTLAND              OR        97219        SFD         7.625          7.359       $1,755.33      360        1-Nov-27
4661106      BODEGA BAY            CA        94923        SFD         7.750          7.484       $1,765.96      360        1-Oct-27
4661155      ENGLEWOOD CLIFFS      NJ        07632        SFD         8.250          7.984       $2,697.05      360        1-Dec-27
4661162      BRADENTON             FL        34203        SFD         7.950          7.684        $556.48       360        1-Sep-27
4661164      BARTLETT              IL        60103        SFD         8.050          7.784       $1,212.79      360        1-Sep-27
4661180      SARASOTA              FL        34235        SFD         7.950          7.684        $465.19       360        1-Sep-27
4661193      IRVINGTON             NY        10533        SFD         7.700          7.434       $2,103.24      360        1-Sep-27
4661313      LOS ALTOS             CA        94024        SFD         7.250          6.984       $2,387.62      360        1-Nov-27
4661640      ENGLEWOOD             CO        80111        SFD         7.625          7.359       $2,371.11      360        1-Nov-27
4661679      MISSION VIEJO         CA        92692        SFD         8.375          8.109       $1,789.98      360        1-Dec-27
4661701      EUGENE                OR        97403        SFD         7.750          7.484       $1,961.18      360        1-Nov-27
4661710      LAJOLLA               CA        92037        LCO         7.500          7.234       $1,633.37      360        1-Nov-27
4661768      PLANO                 TX        75093        SFD         8.000          7.734       $2,143.33      360        1-Nov-27
4661774      MORRISON              CO        80465        SFD         7.750          7.484       $2,197.96      360        1-Nov-27
4661810      SAINT CLAIR SHORES    MI        48081        SFD         7.875          7.609        $526.63       240        1-Dec-17
4661819      HARTSDALE             NY        10530        SFD         8.250          7.984       $1,945.03      360        1-Nov-27
4661911      COLLIERVILLE          TN        38017        SFD         7.625          7.359       $1,908.21      360        1-Dec-27
4661984      NORTH SALT LAKE       UT        84054        SFD         7.500          7.234       $2,006.75      360        1-Nov-27
4662295      NEWTON                MA        02158        MF2         7.625          7.359       $2,105.69      360        1-Dec-27
4662428      WOODINVILLE           WA        98072        SFD         8.000          7.734       $1,966.49      360        1-Dec-27
4662519      CINCINNATI            OH        45242        SFD         7.875          7.609       $1,993.22      360        1-Nov-27
4662596      MARYSVILLE            WA        98271        SFD         7.625          7.359       $1,981.82      360        1-Dec-27
4662684      RIVERBANK             CA        95367        SFD         7.500          7.234       $1,681.62      360        1-Dec-27
4662690      FRANKLIN PARK         NJ        08823        SFD         7.875          7.609       $1,722.41      360        1-Nov-27
4662746      WESTON                CT        06883        SFD         7.625          7.359       $2,887.80      360        1-Dec-27
4662781      GLENVIEW              IL        60025        SFD         7.750          7.484       $2,149.24      360        1-Nov-27
4662841      MAGNOLIA              TX        77355        SFD         825%           7.984        1607.72       360          46722
4662868      NEW HYDE PARK         NY        11040        SFD         763%           7.359         813.96       360          46692
4662929      SAN DIEGO             CA        92130        SFD         763%           7.359        2123.38       360          46722
4663028      SAN MARINO            CA        91108        SFD         763%           7.359        2335.72       360          46692
4663076      LUMBERVILLE           PA        18933        SFD         875%           8.484        2360.11       360          46722
4663103      PEWAUKEE              WI        53072        SFD         775%           7.484        1755.21       360          46722
4663145      FARMINGVILLE          NY        11738        SFD         775%           7.484         793.79       360          46722
4663165      ORANGE                CA        92867        PUD         788%           7.609        2537.75       360          46722
4663173      CHANHASSEN            MN        55317        SFD         775%           7.484        2507.44       360          46692
4663195      EASTON                MA        02356        SFD         800%           7.734        1981.16       360          46661
4663215      ALBUQUERQUE           NM        87122        SFD         763%           7.359        1769.48       360          46661
4663224      AFTON                 MN        55001        SFD         788%           7.609        2537.75       360          46661
4663248      ST LOUIS              MO        63131        SFD         775%           7.484        1834.02       360          46661
4663287      ROCKY MOUNT           NC        27804        SFD         750%           7.234        2126.66       360          46661
4663295      PASADENA              CA        91104        SFD         825%           7.984        2144.87       360          46692
4663296      SCHAUMBURG            IL        60173        SFD         788%           7.609        2175.21       360          46661
4663328      NANTUCKET             MA        02554        SFD         750%           7.234         1957.8       360          46661
4663343      PLYMOUTH              MN        55446        SFD         788%           7.609        1950.44       360          46661
4663419      HOLLAND               MI        49423        SFD         788%           7.609          2545        360          46661
4663431      CHICAGO               IL        60610        HCO         788%           7.609        2639.26       360          46661
4663442      WILMINGTON            NC        28409        SFD         750%           7.234        1678.11       360          46661
4663451      PACIFIC PALISADES     CA        90272        LCO         788%           7.609        3009.04       360          46722
4663457      OMAHA                 NE        68135        SFD         775%           7.484        1802.49       360          46661
4663473      KANSAS CITY           MO        64113        SFD         800%           7.734        1819.74       360          46661
4663483      DALLAS                TX        75205        SFD         775%           7.484         1776.7       360          46661
4663488      NORTH PLATTE          NE        69101        SFD         725%           6.984         1848.7       360          46692
4663492      HUDSON                OH        44236        SFD         775%           7.484        1871.27       360          46661
4663493      GRESHAM               OR        97080        SFD         763%           7.359        1627.93       360          46661
4663515      BARRINGTON            IL        60010        SFD         788%           7.609        1827.17       360          46692
4663516      SHERBORN              MA        01770        SFD         750%           7.234        2111.63       360          46661
4663521      DUXBURY               MA        02332        SFD         750%           7.234        1799.78       360          46661
4663522      MECHANICSVILLE        MD        20659        SFD         775%           7.484        2005.24       360          46661
4663533      ANAHEIM               CA        92808        SFD         775%           7.484        1375.16       360          46722
4663563      MAPLE GROVE           MN        55369        SFD         825%           7.984         570.97       360          46692
4663767      CENTERVILLE           UT        84014        SFD         763%           7.359        1626.86       360          46722
4663774      WEST HOLLYWOOD        CA        90046        SFD         788%           7.609        1703.92       360          46722
4663821      BRIDGEHAMPTON         NY        11932        SFD         788%           7.609        3625.35       360          46692
4663846      NEWTON                MA        02168        SFD         800%           7.734        3701.84       360          46661
4663906      STATEN ISLAND         NY        10308        SFD         763%           7.359        1797.09       360          46722
4664001      SAN JOSE              CA        95124        SFD         800%           7.734        2151.77       360          46722
4664006      CASTAIC AREA          CA        91384        SFD         788%           7.609        1033.23       360          46692
4664039      MINNEAPOLIS           MN        55414        HCO         775%           7.484        1882.74       360          46722
4664049      HIGHLAND PARK         IL        60035        SFD         763%           7.359        4593.59       360          46661
4664076      FAIRFAX               VA        22030        SFD         800%           7.734         1862.3       360          46722
4664086      MT PLEASANT           SC        29464        SFD         750%           7.234        2978.66       360          46661
4664101      VILLA HILLS           KY        41017        SFD         788%           7.609        1778.96       360          46692
4664107      KESWICK               VA        22947        SFD         800%           7.734        2634.22       360          46692
4664193      BONITA SPRINGS        FL        34134        LCO         813%           7.859         813.04       360          46722
4664278      FORT SALONGA          NY        11768        SFD         738%           7.109        1895.22       360          46722
4664410      SAN DIEGO             CA        92119        SFD         788%           7.609        1844.58       360          46692
4664433      SARASOTA              FL        34242        LCO         813%           7.859        1707.75       360          46722
4664684      LAGUNA NIGUEL         CA        92677        SFD         788%           7.609        1783.67       360          46692
4664705      MCKINNEY              TX        75070        SFD         788%           7.609         1907.3       360          46692
4664774      ALAMEDA               CA        94501        SFD         750%           7.234        1677.42       360          46722
4664824      SOUTHLAKE             TX        76092        SFD         750%           7.234         1964.8       360          46722
4664838      DOWNINGTOWN           PA        19335        SFD         750%           7.234         1608.2       360          46722
4664853      CITY OF MOORPARK      CA        93021        SFD         775%           7.484        1719.39       360          46692
4665254      LA JOLLA              CA        92037        LCO         788%           7.609        2291.22       360          46692
4665326      BURBANK               CA        91504        SFD         800%           7.734        1834.41       360          46661
4665369      MEMPHIS               TN        38120        SFD         775%           7.484        2543.26       360          46692
4665533      LOS ALTOS             CA        94024        SFD         763%           7.359          2088        360          46722
4665704      OREM                  UT        84097        SFD         763%           7.359        1771.25       360          46722
4665740      BIG BEAR LAKE         CA        92315        SFD         788%           7.609        2755.27       360          46692
4665743      METAIRIE              LA        70005        SFD         775%           7.484        2507.44       360          46692
4665760      BOCA RATON            FL        33433        SFD         750%           7.234        1482.34       360          46722
4666083      COLUMBIA              MO        65203        SFD         763%           7.359        2123.38       360          46692
4666091      BOISE                 ID        83702        SFD         775%           7.484         1776.7       360          46722
4666181      SNELLVILLE            GA        30278        SFD         775%           7.484         750.81       360          46722
4666182      LOS ANGELES           CA        90056        SFD         775%           7.484        2063.27       360          46722
4666310      PALM SPRINGS          CA        92264        SFD         775%           7.484         777.31       360          46692
4666543      ROCKY RIDGE           MD        21778        SFD         800%           7.734        1775.72       360          46692
4666670      MAPLE GROVE           MN        55369        SFD         788%           7.609        1653.16       360          46692
4666718      ASHEVILLE             NC        28806        SFD         825%           7.984         585.43       360          46722
4666820      PROVIDENCE            UT        84332        SFD         788%           7.609        1687.97       360          46692
4666881      SAN JOSE              CA        95134        PUD         788%           7.609        1740.17       360          46722
4667087      YORKTOWN              PA        23693        SFD         750%           7.234        1748.04       360          46692
4667353      NORFOLK               VA        23507        SFD         750%           7.234        1706.09       360          46692
4667618      SEAL BEACH            CA        90740        SFD         750%           7.234        2006.75       360          46722
4667631      NAVARRE BEACH         FL        32566        HCO         813%           7.859         908.82       360          46722
4667649      SAN DIEGO             CA        92103        SFD         800%           7.734        1951.81       360          46692
4667784      BOCA RATON            FL        33496        SFD         763%           7.359        2512.67       360          46722
4667791      ROLLING HILLS ESTAT   CA        90274        SFD         750%           7.234        2468.23       360          46722
4667806      SPRING                TX        77739        SFD         825%           7.984        1994.62       360          46692
4668058      HENDERSONVILLE        TN        37075        SFD         750%           7.234        2880.77       360          46692
4668322      SANIBEL               FL        33957        LCO         788%           7.609        2211.47       360          46722
4668436      SALT LAKE CITY        UT        84105        SFD         775%           7.484        1683.57       360          46692
4668462      SAN JUAN CAPISTRANO   CA        92675        SFD         775%           7.484        1755.21       360          46722
4668522      TORRANCE              CA        90503        SFD         750%           7.234        2076.67       360          46692
4668528      MORENO VALLEY         CA        92256        SFD         825%           7.984         323.8        360          46692
4668538      SAN JOSE              CA        95118        SFD         775%           7.484        1834.02       360          46692
4668542      MADISON               CT        06443        SFD         800%           7.734        1907.79       360          46692
4668571      HOLLISWOOD            NY        11423        SFD         800%           7.734        1966.49       360          46722
4668663      MODESTO               CA        95356        SFD         763%           7.359        1668.98       360          46692
4668772      BEAUMONT              TX        77706        SFD         750%           7.234        2209.52       360          46722
4669014      HIGHLAND VILLAGE      TX        75067        SFD         750%           7.234        2192.74       360          46692
4669046      ELLICOTT CITY         MD        21042        SFD         788%           7.609        1812.67       360          46692
4669066      HUNTINGTON BEACH      CA        92648        PUD         775%           7.484        1766.44       360          46722
4669092      SAVANNAH              GA        31406        SFD         763%           7.359         1698.7       360          46661
4669262      KETCHUM               ID        83340        LCO         825%           7.984        1025.48       360          46722
4669459      HEALDSBURG            CA        95448        SFD         800%           7.734        1819.74       360          46692
4669485      CUPERTINO             CA        95014        SFD         800%           7.734        1687.66       360          46722
4669501      HIGHLAND VILLAGE      TX        75067        SFD         738%           7.109        2043.71       360          46722
4669561      SAN FRANCISCO         CA        94122        SFD         750%           7.234         1964.8       360          46722
4669707      WALNUT CREEK          CA        94596        SFD         750%           7.234        1646.66       360          46692
4669753      BELLEVUE              WA        98007        SFD         775%           7.484        1713.66       360          46722
4669760      ARLINGTON HEIGHTS     IL        60005        SFD         713%           6.859        1606.82       360          46692
4669832      ALAMO                 CA        94507        SFD         750%           7.234        3705.84       360          46722
4670401      RALEIGH               NC        27614        SFD         775%           7.484        2220.67       300          44835
4670408      SAN JOSE              CA        95135        SFD         775%           7.484        2636.04       360          46692
4670444      ORLANDO               FL        32835        SFD         825%           7.984        1998.37       360          46692
4670545      HUNTINGTON BEACH      CA        92646        SFD         825%           7.984        1742.94       360          46692
4670547      REDONDO BEACH         CA        90277        SFD         775%           7.484        2532.52       360          46661
4670553      GEORGETOWN            MD        21930        SFD         775%           7.484        2056.11       360          46692
4670580      DELRAY BEACH          FL        33446        SFD         825%           7.984        3756.34       360          46692
4670739      LOS ANGELES           CA        90056        SFD         775%           7.484         1837.6       360          46722
4670843      DANVILLE              CA        94526        SFD         750%           7.234        2080.86       360          46722
4671002      LAS VEGAS             NV        89118        SFD         750%           7.234        2622.05       360          46722
4671110      STONY BROOK           NY        11790        SFD         788%           7.609        1696.66       360          46692
4671253      FREMONT               CA        94539        SFD         800%           7.734        4549.34       360          46692
4671259      CASTRO VALLEY         CA        94552        SFD         788%           7.609        1848.93       360          46692
4671265      WHEELING              IL        60090        SFD         788%           7.609        1829.35       360          46692
4671578      SAN FRANCISCO         CA        94121        SFD         775%           7.484        2629.23       360          46692
4671942      PELL CITY             AL        35125        SFD         750%           7.234        1717.28       360          46722
4672388      BREWSTER              NY        10509        SFD         788%           7.609        1821.74       360          46722
4672442      TAMPA                 FL        33609        SFD         763%           7.359        1981.83       360          46722
4672651      CLIFTON               VA        22024        SFD         725%           6.984        1998.78       360          46722
4672659      SUNNYVALE             CA        94087        SFD         800%           7.734        1880.64       360          46692
4672728      SAN JOSE              CA        95120        SFD         788%           7.609        2033.82       360          46692
4673202      MARINA DEL REY        CA        90292        SFD         775%           7.484        1432.83       360          46692
4673457      BEVERLY HILLS         CA        90210        SFD         788%           7.609        4712.96       360          46692
4673642      SNOWHOMISH            WA        98296        SFD         738%           7.109        1683.52       360          46722
4673894      NEW CASTLE            CA        95658        SFD         775%           7.484        1891.33       360          46661
4674474      LAS VEGAS             NV        89129        SFD         788%           7.609        1790.93       360          46692
4677358      SANTA ANA             CA        92705        SFD         788%           7.609        2186.81       360          46692
4678335      NEW YORK              NY        10024        LCO         813%           7.859        1744.87       360          46722
4678759      RIVERSIDE             CA        92506        SFD         775%           7.484        1901.72       360          46692
6097088      FREMONT               CA        94536        SFD         788%           7.609        3915.37       360          46661
6110716      FERNANDINA BEACH      FL        32034        PUD         800%           7.734        2164.61       360          46661
6155806      LEWIS CENTER          OH        43035        SFD         800%           7.734        1940.44       360          46631
6177365      CANNON FALLS          MN        55069        SFD         800%           7.734        1761.04       360          46631
6180349      TEMPE                 AZ        85284        SFD         788%           7.609         2102.7       360          46692
6279770      BENICIA               CA        94510        SFD         775%           7.484        1688.55       360          46631
6300732      PRIOR LAKE            MN        55372        SFD         763%           7.359        1840.26       360          46692
6329587      OAK PARK              IL        60302        SFD         800%           7.734         2377.4       360          46661
6345897      COCKEYSVILLE          MD        21030        SFD         800%           7.734        2112.14       360          46692
6391002      PARK CITY             UT        84060        SFD         775%           7.484        2836.99       360          46631
6398834      SAN LUIS OBISPO       CA        93401        SFD         788%           7.609        2224.59       360          46661
6404702      MOUNT VERNON          WA        98274        SFD         788%           7.609        1740.17       360          46661
6406742      SUPERIOR              CO        80027        SFD         750%           7.234        2433.27       360          46631
6426143      SCOTCH PLAINS         NJ        07076        SFD         800%           7.734        1737.55       360          46661
6430336      MINT HILL             NC        28227        SFD         763%           7.359        1642.08       360          46692
6430343      HOPKINTON             MA        01748        SFD         775%           7.484        2751.02       360          46631
6430974      LEVITTOWN             NY        11756        SFD         725%           6.984         511.63       360          46661
6431263      TUCSON                AZ        85750        SFD         800%           7.734        2195.42       360          46661
6433623      SAN JOSE              CA        95138        SFD         750%           7.234        3810.72       360          46692
6434084      STERLING              CO        80751        LCO         775%           7.484         322.39       360          46661
6434202      DANVILLE              CA        94506        PUD         788%           7.609        4147.03       360          46661
6436293      WASHINGTON            DC        20012        SFD         788%           7.609        2900.28       360          46661
6437059      PORTLAND              OR        97221        SFD         775%           7.484        1719.39       360          46661
6437646      SAN JOSE              CA        95138        PUD         763%           7.359        1670.39       360          46661
6438366      LAWRENCE TWP          NJ        08648        SFD         788%           7.609        1790.92       360          46661
6438391      TRABUCO CANYON        CA        92679        SFD         788%           7.609        1835.15       360          46661
6440199      GILROY                CA        95020        SFD         825%           7.984        2349.92       360          46692
6440235      GILROY                CA        95020        SFD         775%           7.484        1794.97       360          46692
6441523      HAWTHORN WOODS        IL        60047        SFD         775%           7.484        1683.57       360          46692
6443032      FOUNTAINVILLE         PA        18923        SFD         738%           7.109        1839.96       360          46692
6445275      MILTON                MA        02186        SFD         813%           7.859        1900.79       360          46600
6446142      SANTA ANA             CA        92705        SFD         775%           7.484        6178.34       360          46661
6446277      CAMARILLO             CA        93012        SFD         675%           6.484        1617.93       360          46692
6450066      MINNETRISTA           MN        55331        SFD         775%           7.484        1719.39       360          46631
6451814      CAMARILLO             CA        93012        SFD         738%           7.109        1705.28       360          46692
6452601      SANTA ANA             CA        92705        SFD         788%           7.609        3154.05       360          46661
6453295      RANCHOS DE TAOS       NM        87557        SFD         800%           7.734        2160.94       360          46692
6455629      HILLSBOROUGH          NC        27278        SFD         800%           7.734        3763.98       240          43009
6455791      BELMONT               MA        02178        SFD         750%           7.234        2622.05       360          46661
6457341      BEDFORD               MA        01730        SFD         813%           7.859        1804.27       360          46661
6457970      CHATHAM               NJ        07928        SFD         763%           7.359        1748.25       360          46661
6458352      WEST COVINA           CA        91791        SFD         775%           7.484        2235.21       360          46661
6459303      DENVER                CO        80202        LCO         763%           7.359         2052.6       360          46692
6461406      ORONO                 MN        55364        SFD         788%           7.609        2327.47       360          46692
6461683      VICTORIA              TX        77901        SFD         775%           7.484         1904.6       240          43009
6462484      MOUND                 MN        55364        SFD         788%           7.609        1761.92       360          46631
6464130      ST HELENA             CA        94574        SFD         788%           7.609        2010.62       360          46692
6464871      GLEN ELLYN            IL        60137        SFD         813%           7.859        1878.52       360          46631
6465411      SYCAMORE              IL        60178        SFD         788%           7.609        2311.16       360          46661
6466199      WASHINGTON TWP        NJ        07853        SFD         738%           7.109        1913.17       360          46631
6466476      AUSTIN                MN        55912        SFD         850%           8.234        1845.39       360          46661
6466883      SOUTHAVEN             MS        38671        SFD         750%           7.234        2359.85       360          46692
6467850      FULLERTON             CA        92831        PUD         788%           7.609        1948.26       360          46661
6468396      MINNETRISTA           MN        55364        SFD         750%           7.234        2559.13       360          46631
6469465      REDMOND               WA        98053        SFD         750%           7.234        2076.32       360          46661
6469859      WEST DES MOINES       IA        50265        SFD         788%           7.609        1962.76       360          46631
6470042      BENNETT               CO        80102        SFD         800%           7.734        1819.74       360          46661
6470531      LAS VEGAS             NV        89117        SFD         825%           7.984        3305.57       360          46661
6470692      ALISO VIEJO           CA        92656        LCO         825%           7.984         601.01       360          46661
6470849      RALEIGH               NC        27607        SFD         763%           7.359        2650.68       360          46661
6470915      LOOMIS                CA        95650        SFD         800%           7.734        3375.32       360          46661
6473065      SALT LAKE CITY        UT        84108        SFD         825%           7.984        3005.07       360          46631
6473720      CANOGA PARK           CA        91307        SFD         763%           7.359        3248.77       360          46661
6474744      SAN RAMON             CA        94583        SFD         750%           7.234        1786.41       360          46692
6474898      SILVERTHORNE          CO        80498        SFD         800%           7.734        1834.41       360          46661
6475063      PLEASANTON            CA        94566        SFD         750%           7.234        1831.94       360          46692
6475278      SANTA ROSA            CA        95404        SFD         825%           7.984        2171.16       360          46692
6475343      FREMONT               IN        46737        SFD         775%           7.484        1862.67       360          46692
6476263      MORRISTOWN            NJ        07960        SFD         725%           6.984        2558.16       360          46661
6476555      WESTFIELD             NJ        07090        SFD         725%           6.984        1712.26       360          46661
6479576      PLYMOUTH              MN        55447        SFD         788%           7.609        1798.17       360          46631
6480076      WOODLAND PARK         CO        80863        SFD         788%           7.609        1903.31       360          46661
6481085      CHATHAM               NJ        07928        SFD         750%           7.234        1845.93       360          46661
6481808      LEXINGTON             MA        02173        SFD         775%           7.484        3510.42       360          46631
6481834      FREDERICK             CO        80530        SFD         813%           7.859        1811.69       360          46661
6483862      LONG BEACH TWP        NJ        08008        SFD         813%           7.859        2093.84       360          46692
6484238      PENN VALLEY           CA        95946        SFD         838%           8.109        2108.44       360          46631
6484264      CHULA VISTA           CA        91914        SFD         825%           7.984        1869.15       360          46692
6484351      AHAHEIM               CA        92807        PUD         788%           7.609        5626.54       360          46661
6484493      LITTLETON             CO        80123        PUD         850%           8.234        1922.28       360          46661
6484852      EAST RUTHERFORD       NJ        07073        SFD         825%           7.984         957.86       360          46661
6485905      ALBUQUERQUE           NM        87122        SFD         800%           7.734        2201.29       360          46661
6487461      MAPLEWOOD             NJ        07040        SFD         863%           8.359        1415.58       360          46692
6487527      MAPLE VALLEY          WA        98038        SFD         775%           7.484        1661.72       360          46661
6487589      ARROYO GRANDE         CA        93401        SFD         788%           7.609        1903.31       360          46661
6487731      MARBLEHEAD            MA        01945        SFD         763%           7.359        1751.79       360          46661
6487849      WESTPORT              CT        06880        SFD         825%           7.984          1927        360          46661
6488570      CORONADO              CA        92118        PUD         775%           7.484        1662.08       360          46692
6489302      PASADENA              CA        91106        SFD         800%           7.734          1932        360          46661
6489967      HOLMDEL               NJ        07733        SFD         763%           7.359        3185.07       360          46692
6490946      PARK RIDGE            IL        60068        LCO         800%           7.734        1943.01       360          46692
6491382      MONTGOMERY TWNSP      NJ        08502        SFD         800%           7.734        2604.86       360          46661
6492774      CORONADO              CA        92118        SFD         788%           7.609        2523.24       360          46661
6492830      SANDY                 UT        84093        SFD         750%           7.234        2020.73       360          46631
6493364      ALAMEDA               CA        94502        PUD         738%           7.109         2429.1       360          46692
6493760      PARK CITY             UT        84060        SFD         788%           7.609        2566.75       360          46692
6494450      SAN LUIS OBISPO       CA        93401        SFD         788%           7.609        2362.28       360          46661
6494992      BOULDER               CO        80306        SFD         813%           7.859        2494.79       360          46661
6495307      HENDERSON             NV        89014        SFD         800%           7.734        1951.81       360          46692
6495400      ROCKVILLE             MD        20852        SFD         750%           7.234         1906.9       360          46661
6496357      NEWPORT BEACH         CA        92663        SFD         763%           7.359        3892.87       360          46692
6498210      SOUTHWICK             MA        01077        SFD         788%           7.609        1749.59       360          46692
6498517      SAN CLEMENTE          CA        92672        SFD         838%           8.109        5405.63       360          46661
6498623      SNOWMASS VILLAGE      CO        81615        LCO         813%           7.859        1299.37       360          46661
6498872      NORTH CALDWELL        NJ        07006        SFD         800%           7.734         895.19       360          46692
6500040      MARIETTA              GA        30067        SFD         763%           7.359        2300.33       360          46661
6500238      BISHOP                CA        93514        SFD         850%           8.234         1026.5       360          46661
6500728      SHAMONG TWP           NJ        08088        SFD         813%           7.859        2672.99       360          46661
6501027      CHEVY CHASE           MD        20815        SFD         763%           7.359        2485.77       360          46692
6501093      MCLEAN                VA        22101        SFD         738%           7.109        2072.03       360          46692
6501194      CARLSBAD              CA        92008        PUD         788%           7.609        1667.66       360          46661
6501568      OMAHA                 NE        68135        PUD         800%           7.734        2219.64       360          46661
6501665      EASTCHESTER           NY        10709        SFD         788%           7.609        2251.34       360          46692
6503927      WESTBORO              MA        01581        SFD         863%           8.359        1772.62       360          46661
6504405      CARBONDALE            CO        81623        SFD         825%           7.984        2854.81       360          46661
6505007      GLENDALE              CA        91208        SFD         788%           7.609        2091.83       360          46661
6505240      VIRGINIA BEACH        VA        23451        SFD         800%           7.734        2063.35       360          46661
6506468      CAMPBELL              CA        95008        SFD         750%           7.234         2045.2       360          46692
6506977      HOLLISTER             CA        95023        SFD         850%           8.234        1934.97       360          46661
6507087      FORT COLLINS          CO        80524        PUD         813%           7.859        1748.58       360          46661
6507215      CASTLE ROCK           CO        80104        PUD         788%           7.609        3625.35       360          46692
6508258      ALBUQUERQUE           NM        87122        SFD         788%           7.609        1776.42       360          46661
6508411      MONTVALE              NJ        07645        SFD         813%           7.859        1930.49       360          46661
6509234      SAN DIEGO             CA        92130        SFD         775%           7.484        1897.78       360          46661
6509256      LEES SUMMIT           MO        64081        SFD         813%           7.859        2352.23       360          46661
6509733      SAN JOSE              CA        95118        SFD         788%           7.609        1867.78       360          46661
6510337      LITTLETON             CO        80127        SFD         775%           7.484        3209.53       360          46692
6510706      MORGAN HILL           CA        95037        SFD         763%           7.359        1805.94       360          46661
6510707      AVALON                NJ        08202        SFD         800%           7.734        3580.77       360          46692
6512102      PARK CITY             UT        84098        SFD         750%           7.234        2447.25       360          46692
6512362      SANDY                 UT        84093        SFD         838%           8.109        3724.35       360          46661
6512382      COTO DE CAZA          CA        92679        PUD         788%           7.609        3045.29       360          46692
6513499      DANVILLE              CA        94526        SFD         775%           7.484        1955.81       360          46692
6513958      WEST LAKELAND         MN        55082        SFD         788%           7.609        1740.17       360          46692
6513975      FAIRFAX               VA        22030        PUD         775%           7.484        1735.51       360          46692
6513981      DEPOE BAY             OR        97341        PUD         775%           7.484        2493.11       360          46692
6514708      IUKA                  MS        38852        SFD         813%           7.859        2004.74       360          46661
6515186      MAPLE VALLEY          WA        98038        SFD         775%           7.484         863.99       360          46661
6515284      BASALT                CO        81621        SFD         825%           7.984        1990.86       360          46661
6515598      SANTA ANA             CA        92705        SFD         788%           7.609        5126.24       360          46661
6515836      WINDSOR               CO        80550        SFD         813%           7.859        3522.41       360          46661
6516053      SAN JOSE              CA        95123        SFD         763%           7.359        1640.31       360          46692
6517078      EMERSON               NJ        07630        SFD         825%           7.984        1859.38       360          46692
6517095      MAPLEWOOD             NJ        07040        SFD         800%           7.734        1100.65       360          46692
6517397      RANCHO CUCAMONGA      CA        91739        SFD         800%           7.734        1763.24       360          46661
6517805      WEST LINN             OR        97068        SFD         763%           7.359        1840.26       360          46692
6518143      SAN CARLOS            CA        94070        LCO         763%           7.359        2208.32       360          46661
6518183      WATERFORD             CT        06385        SFD         850%           8.234         346.01       360          46692
6518572      SALT LAKE CITY        UT        84124        SFD         775%           7.484        1862.67       360          46692
6519080      EDINA                 MN        55424        SFD         788%           7.609         3120.7       360          46692
6519392      MIDDLETOWN            NJ        07701        SFD         738%           7.109        2417.36       360          46692
6519769      BREMERTON             WA        98311        SFD         825%           7.984        3671.82       360          46692
6519969      LOS ALAMITOS          CA        90720        SFD         763%           7.359        1681.01       360          46661
6520537      ALBUQUERQUE           NM        87122        SFD         788%           7.609        1918.53       360          46692
6520701      BENTON                LA        71006        SFD         813%           7.859        1692.89       360          46661
6521484      LIVERMORE             CA        94550        SFD         775%           7.484        1638.08       360          46661
6521540      SUNNYVALE             CA        94086        SFD         775%           7.484        1713.66       360          46692
6522858      OMAHA                 NE        68164        SFD         813%           7.859        2102.38       360          46692
6523796      MONROVIA              CA        91016        SFD         788%           7.609         2117.2       360          46692
6524580      HOLLIS HILLS          NY        11367        SFD         813%           7.859        1937.92       360          46692
6524608      SCOTTSDALE            AZ        85255        PUD         775%           7.484        2149.24       360          46692
6525003      PARADISE VALLEY       AZ        85253        SFD         775%           7.484        2951.62       360          46692
6525656      CARLSBAD              CA        92009        SFD         775%           7.484        2388.16       360          46692
6525789      MORAN                 WY        83013        SFD         788%           7.609        1943.19       360          46692
6525900      OXNARD                CA        93035        SFD         738%           7.109        1958.06       360          46692
6527328      WAYLAND               MA        01778        SFD         788%           7.609        2900.28       360          46692
6527745      SPANGLE               WA        99031        SFD         775%           7.484        2005.95       360          46692
6528401      SARATOGA              CA        95070        SFD         763%           7.359        1769.48       360          46692
6528901      REDMOND               WA        98053        PUD         763%           7.359        1735.86       360          46661
6529033      STAMFORD              CT        06902        SFD         738%           7.109        1788.85       360          46692
6529281      BRECKENRIDGE          CO        80424        SFD         775%           7.484        2464.46       360          46692
6529285      ALEXANDRIA TWP        NJ        08867        SFD         788%           7.609        1885.18       360          46692
6529617      BERNARDS              NJ        07920        PUD         800%           7.734        1981.16       360          46692
6530158      CHESAPEAKE            VA        23320        SFD         763%           7.359        1765.95       360          46692
6530332      HUNTINGTON BEACH      CA        92646        SFD         775%           7.484        2103.39       360          46692
6530424      LAGUNA BEACH          CA        92651        SFD         775%           7.484        3582.06       360          46692
6531485      LOS ANGELES           CA        91364        SFD         775%           7.484        2070.43       360          46692
6532141      LITTLETON             CO        80122        PUD         800%           7.734        2237.98       360          46692
6532235      YORBA LINDA           CA        92887        SFD         788%           7.609        1682.16       360          46692
6532931      SARASOTA              FL        34236        PUD         725%           6.984        1705.44       360          46692
6533924      ROCHESTER             MN        55902        SFD         763%           7.359        1642.08       360          46692
6534052      DENVER                CO        80206        SFD         800%           7.734        5209.73       360          46692
6534090      OXNARD                CA        93030        SFD         775%           7.484        1970.13       360          46692
6534124      LAKE HAVASU CITY      AZ        86404        SFD         800%           7.734         2377.4       360          46692
6534403      SAN JOSE              CA        95138        SFD         775%           7.484        1753.06       360          46661
6535008      PHOENIX               AZ        85024        SFD         788%           7.609        1673.82       360          46692
6535297      OLD TAPPAN            NJ        07675        SFD         800%           7.734        2421.42       360          46692
6535644      LAKEWOOD              WA        98467        SFD         775%           7.484        1701.48       360          46692
6535725      CEDAREDGE             CO        81413        SFD         788%           7.609        1769.17       360          46692
6535833      COLORADO SPRINGS      CO        80906        SFD         788%           7.609        2755.26       360          46661
6536904      MADISON               AL        35758        SFD         725%           6.984        1603.11       360          46692
6537157      DENVER                CO        80206        SFD         775%           7.484         2993.6       360          46692
6537664      TRABUCO CANYON        CA        92679        SFD         775%           7.484        2134.91       360          46692
6537689      SAN JOSE              CA        95125        SFD         800%           7.734         2436.1       360          46692
6537728      SAN FRANCISCO         CA        94127        SFD         788%           7.609        2418.83       360          46692
6537754      PRIOR LAKE            MN        55372        SFD         800%           7.734        1741.99       360          46692
6537792      LIVERMORE             CA        94550        SFD         775%           7.484        1888.82       360          46692
6537810      LOS ALTOS             CA        94024        SFD         713%           6.859        2189.59       360          46692
6538107      CAMBRIDGE             MN        55008        SFD         763%           7.359        1868.58       360          46692
6538792      ROSEMONT              PA        19010        SFD         775%           7.484        4656.68       360          46692
6539116      MILPITAS              CA        95035        SFD         725%           6.984        1923.05       360          46692
6540311      DUXBURY               MA        02332        SFD         800%           7.734        1882.11       360          46692
6540873      SAN JOSE              CA        95138        SFD         738%           7.109        1726.69       360          46692
6541471      SANTA BARBARA         CA        93110        SFD         775%           7.484        6922.69       360          46692
6541520      KAUFMAN               TX        75142        SFD         788%           7.609        1769.89       360          46692
6541889      ST LOUIS PARK         MN        55416        SFD         738%           7.109        1823.38       360          46692
6542122      SAN JOSE              CA        95138        SFD         738%           7.109        2417.36       360          46692
6542750      SAN DIEGO             CA        92131        PUD         738%           7.109        2319.98       360          46692
6542827      DES MOINES            IA        50312        SFD         763%           7.359        2123.38       360          46692
6543084      ROSWELL               GA        30075        SFD         750%           7.234        2310.75       360          46692
6543400      EDINA                 MN        55439        SFD         750%           7.234         1866.9       360          46692
6543437      SHAKOPEE              MN        55379        PUD         763%           7.359        1744.71       360          46692
6543703      LIVERMORE             CA        94550        SFD         788%           7.609        1803.97       360          46692
6543710      SAN JOSE              CA        95123        SFD         788%           7.609        1914.91       360          46692
6545357      HAILEY                ID        83333        SFD         775%           7.484        1834.02       360          46692
6545772      BLUE SPRINGS          MO        64015        SFD         775%           7.484        1717.96       360          46692
6545917      SAN RAMON             CA        94583        SFD         775%           7.484        2040.16       360          46692
6545969      KENT                  WA        98031        SFD         775%           7.484        1882.73       360          46692
6546335      LAKESIDE PARK         KY        41017        SFD         775%           7.484        1966.91       360          46692
6546871      CORCORAN              MN        55374        SFD         763%           7.359        2151.69       360          46692
6547561      SILVER SPRINGS        MD        20910        SFD         775%           7.484        1869.84       360          46692
6547725      SCOTTSDALE            AZ        85259        SFD         775%           7.484        1719.39       360          46692
6548265      UNION CITY            CA        94587        SFD         775%           7.484        2292.52       360          46692
6548272      UNION CITY            CA        94587        PUD         725%           6.984        1978.31       360          46692
6548442      GOLDEN                CO        80403        PUD         750%           7.234        2487.11       360          46692
6549188      SAN JOSE              CA        95138        SFD         738%           7.109        2417.36       360          46692
6550278      SCOTTSDALE            AZ        85254        PUD         750%           7.234        1789.99       360          46692
6550304      PARADISE VALLEY       AZ        85253        SFD         763%           7.359        4246.76       360          46692
6551344      SCOTTSDALE            AZ        85255        PUD         788%           7.609        2262.22       360          46692
6553525      VIRGINIA BEACH        VA        23454        SFD         788%           7.609        1948.99       360          46722
6553728      UNION CITY            CA        94587        PUD         700%           6.734        1749.75       360          46692
6554196      VALENCIA              CA        91354        SFD         725%           6.984         1655.3       360          46692
6555552      ZIONSVILLE            IN        46077        PUD         775%           7.484        1812.52       360          46692
6555908      WALNUT                CA        91789        SFD         763%           7.359        1656.24       360          46722
6556375      SAN JOSE              CA        95120        SFD         775%           7.484        2149.24       360          46692
6559095      NIWOT                 CO        80503        SFD         775%           7.484        2865.65       360          46692
6560422      RENO                  NV        89509        SFD         750%           7.234        1922.84       360          46692
6561776      CHARLOTTE             NC        28207        LCO         788%           7.609        1824.64       360          46692
6567346      LAGUNA BEACH          CA        92651        SFD         763%           7.359        1721.35       360          46692
6567560      AVALON                NJ        08202        SFD         763%           7.359        1769.48       360          46692
</TABLE>


COUNT:  944
WAC:      7.77408528
WAM:    357.5650482
WALTV:   73.93736123


<PAGE>
<TABLE>
<CAPTION>
                  CUT-OFF
  MORTGAGE         DATE                              MORTGAGE                  T.O.P.     MASTER
    LOAN         PRINCIPAL                           INSURANCE    SERVICE     MORTGAGE    SERVICE
   NUMBER         BALANCE        LTV      SUBSIDY      CODE         FEE         LOAN        FEE
<S>             <C>             <C>       <C>         <C>          <C>        <C>          <C>    
2154639         $334,916.04     80.00                              0.250                   0.016
4511090         $112,000.00     58.95                              0.250                   0.016
4542342         $267,500.00     75.00                              0.250                   0.016
4551473         $364,508.55     54.07                              0.250                   0.016
4578338         $370,000.00     67.61                              0.250                   0.016
4589639         $373,236.39     90.00                   11         0.250                   0.016
4598783         $241,344.42     79.99                              0.250                   0.016
4599525         $374,400.00     90.00                   11         0.250                   0.016
4604828         $279,797.35     80.00                              0.250                   0.016
4605026         $329,761.16     75.00                              0.250                   0.016
4605165         $279,622.99     67.47                              0.250                   0.016
4606146         $347,741.73     78.56                              0.250                   0.016
4606156         $521,950.00     80.00                              0.250                   0.016
4613613         $305,521.14     90.00                   06         0.250                   0.016
4616789         $296,600.85     89.97                              0.250                   0.016
4617133         $99,851.10      60.61                              0.250                   0.016
4617583         $440,000.00     73.95                              0.250                   0.016
4618734         $262,619.14     80.00                              0.250                   0.016
4618903         $305,594.31     89.99                   01         0.250                   0.016
4619230         $445,000.00     71.77                              0.250                   0.016
4620576         $360,685.96     89.99                              0.250                   0.016
4620997         $280,000.00     64.89                              0.250                   0.016
4624740         $272,000.00     80.00      GD 2YR                  0.250                   0.016
4626014         $373,264.93     76.77                              0.250                   0.016
4626111         $309,500.00     88.43                              0.250                   0.016
4626962         $419,127.17     80.00                              0.250                   0.016
4627176         $499,655.90     63.29                              0.250                   0.016
4627478         $239,812.77     77.42                              0.250                   0.016
4629084         $427,198.27     90.00                   17         0.250                   0.016
4629122         $265,000.00     63.86                              0.250                   0.016
4629290         $256,000.00     79.80                              0.250                   0.016
4630509         $499,628.92     38.46                              0.250                   0.016
4631340         $389,731.61     75.00                              0.250                   0.016
4632554         $249,804.97     58.55                              0.250                   0.016
4633070         $229,509.85     69.91                              0.250                   0.016
4633159         $120,941.02     70.00                              0.250                   0.016
4633542         $323,209.74     90.00                   12         0.250                   0.016
4634018         $146,000.00     73.00                              0.250                   0.016
4635293         $261,320.03     79.97                              0.250                   0.016
4635648         $313,789.31     73.88                              0.250                   0.016
4636249         $255,315.07     84.98                              0.250                   0.016
4637334         $306,167.75     68.22                              0.250                   0.016
4637347         $235,842.53     78.44                              0.250                   0.016
4637431         $251,121.39     80.00                              0.250                   0.016
4637629         $271,798.14     80.00                              0.250                   0.016
4637698         $231,541.62     80.00                              0.250                   0.016
4637759         $317,781.15     28.91                              0.250                   0.016
4637770         $297,858.32     80.00                              0.250                   0.016
4637772         $229,517.00     89.26                   01         0.250                   0.016
4637826         $239,692.87     80.00                              0.250                   0.016
4637956         $274,456.66     71.90                              0.250                   0.016
4637995         $269,718.90     79.38                              0.250                   0.016
4638279         $351,875.48     89.99                   01         0.250                   0.016
4638296         $323,996.32     74.71                              0.250                   0.016
4638307         $271,120.75     80.00                              0.250                   0.016
4638483         $247,400.03     89.99                              0.250                   0.016
4638624         $796,806.49     66.67                              0.250                   0.016
4638652         $241,426.40     95.00                   01         0.250                   0.016
4639328         $255,666.06     80.00                              0.250                   0.016
4639331         $261,289.72     73.60                              0.250                   0.016
4639348         $398,557.34     80.00                              0.250                   0.016
4639354         $234,578.28     80.00                              0.250                   0.016
4639387         $236,605.83     80.00                              0.250                   0.016
4639646         $74,893.78      76.53                              0.250                   0.016
4639976         $253,653.98     84.39                   12         0.250                   0.016
4640059         $227,843.09     80.00                              0.250                   0.016
4640060         $261,638.19     80.00                              0.250                   0.016
4640113         $164,395.10     70.00                              0.250                   0.016
4640943         $322,376.11     90.00                   12         0.250                   0.016
4641273         $258,821.76     78.48                              0.250                   0.016
4641949         $269,680.04     90.00                              0.250                   0.016
4642364         $236,800.00     80.00                              0.250                   0.016
4642416         $316,787.29     73.38                              0.250                   0.016
4642557         $255,784.56     90.00                   12         0.250                   0.016
4643035         $74,888.33      53.57                              0.250                   0.016
4643050         $392,443.12     71.40                              0.250                   0.016
4643260         $478,853.17     80.00                              0.250                   0.016
4643355         $310,286.31     90.00                   01         0.250                   0.016
4643384         $209,574.45     70.00                              0.250                   0.016
4643598         $308,043.17     90.00                   17         0.250                   0.016
4643781         $353,730.62     41.65                              0.250                   0.016
4643785         $318,309.84     75.00                              0.250                   0.016
4643926         $259,829.93     80.00                              0.250                   0.016
4644115         $247,833.59     80.00                              0.250                   0.016
4644125         $227,200.00     80.00                              0.250                   0.016
4644261         $234,838.28     50.38                              0.250                   0.016
4644347         $339,741.28     80.00                              0.250                   0.016
4644596         $347,250.00     75.00                              0.250                   0.016
4644692         $105,450.46     79.96                              0.250                   0.016
4644777         $619,583.99     77.50                              0.250                   0.016
4644909         $323,574.69     90.00                   01         0.250                   0.016
4644986         $239,148.33     90.00                   01         0.250                   0.016
4645091         $247,029.88     80.00                              0.250                   0.016
4645173         $363,755.77     80.00                              0.250                   0.016
4645376         $74,893.78      48.39                              0.250                   0.016
4645400         $364,261.56     90.00                   17         0.250                   0.016
4645539         $234,000.00     90.00                              0.250                   0.016
4645680         $400,000.00     34.33                              0.250                   0.016
4645861         $392,000.00     64.79                              0.250                   0.016
4645907         $298,799.71     55.22                              0.250                   0.016
4646331         $125,915.46     79.75                              0.250                   0.016
4646467         $307,788.04     80.00                              0.250                   0.016
4646554         $295,791.09     74.37                              0.250                   0.016
4646619         $249,506.05     73.53                              0.250                   0.016
4646668         $247,824.96     80.00                              0.250                   0.016
4646838         $244,800.00     80.00                              0.250                   0.016
4646948         $374,728.58     75.60      GD 4YR                  0.250                   0.016
4647199         $264,000.00     80.00                              0.250                   0.016
4647247         $275,000.00     63.07                              0.250                   0.016
4647663         $170,000.00     68.00                              0.250                   0.016
4647902         $269,438.53     95.00                   12         0.250                   0.016
4648070         $287,796.73     90.00                   17         0.250                   0.016
4648179         $299,793.54     80.00                              0.250                   0.016
4648402         $282,810.12     78.61                              0.250                   0.016
4648473         $228,714.32     88.42                              0.250                   0.016
4648475         $78,346.04      80.00                              0.250                   0.016
4648484         $275,000.00     64.71                              0.250                   0.016
4648699         $284,000.00     80.00                              0.250                   0.016
4648771         $100,000.00     32.26                              0.250                   0.016
4648956         $249,148.28     50.00                              0.250                   0.016
4649139         $246,184.72     74.98                              0.250                   0.016
4649210         $311,307.92     70.91                              0.250                   0.016
4649229         $271,200.07     90.00                   06         0.250                   0.016
4649262         $502,936.67     80.00                              0.250                   0.016
4649302         $369,578.38     80.00                              0.250                   0.016
4649306         $258,400.00     80.00                              0.250                   0.016
4649336         $275,969.21     74.80                              0.250                   0.016
4649365         $327,265.14     80.00                              0.250                   0.016
4649372         $279,277.65     80.00                              0.250                   0.016
4649378         $238,191.30     78.26                              0.250                   0.016
4649405         $322,304.70     74.25                              0.250                   0.016
4649529         $239,826.29     68.57                              0.250                   0.016
4649590         $232,000.00     61.05                              0.250                   0.016
4649602         $248,000.00     80.00                              0.250                   0.016
4649701         $235,000.00     72.31                              0.250                   0.016
4649812         $236,832.72     65.83                              0.250                   0.016
4649816         $267,815.56     80.00                              0.250                   0.016
4649886         $260,000.00     54.17                              0.250                   0.016
4650053         $291,312.49     80.00                              0.250                   0.016
4650217         $229,835.89     77.83                              0.250                   0.016
4650233         $261,000.00     90.00                   11         0.250                   0.016
4650635         $311,341.74     75.00                              0.250                   0.016
4650639         $499,309.54     58.82                              0.250                   0.016
4650670         $294,408.22     73.75                              0.250                   0.016
4650862         $249,823.55     63.29                              0.250                   0.016
4650965         $319,297.25     57.14                              0.250                   0.016
4650967         $295,387.94     80.00                              0.250                   0.016
4650975         $369,187.43     76.29                              0.250                   0.016
4650979         $398,948.75     56.14                              0.250                   0.016
4650992         $327,212.92     80.00                              0.250                   0.016
4651034         $298,000.00     90.30                              0.250                   0.016
4651310         $260,815.78     74.57                              0.250                   0.016
4651525         $324,758.80     63.73                              0.250                   0.016
4651574         $499,655.90     80.00                              0.250                   0.016
4651655         $292,600.00     76.00                              0.250                   0.016
4651916         $399,724.72     68.97                              0.250                   0.016
4651968         $115,922.16     80.00                              0.250                   0.016
4652028         $247,566.23     79.46                              0.250                   0.016
4652039         $267,810.54     87.93                   06         0.250                   0.016
4652089         $429,496.65     71.63                              0.250                   0.016
4652225         $242,000.00     73.33                              0.250                   0.016
4652310         $274,400.00     79.93                              0.250                   0.016
4652346         $266,809.48     79.98                              0.250                   0.016
4652586         $196,000.00     80.00                              0.250                   0.016
4652854         $199,872.47     71.79                              0.250                   0.016
4652857         $269,794.55     59.34                              0.250                   0.016
4652898         $281,056.44     71.38                              0.250                   0.016
4652949         $230,000.00     80.00                              0.250                   0.016
4652954         $234,838.28     67.14                              0.250                   0.016
4653490         $299,793.54     66.67                              0.250                   0.016
4653525         $238,391.46     58.91                              0.250                   0.016
4653583         $416,713.02     63.66                              0.250                   0.016
4653638         $230,100.00     74.23                              0.250                   0.016
4653773         $383,663.73     77.58                              0.250                   0.016
4653896         $293,947.43     77.84                              0.250                   0.016
4653980         $284,423.10     87.62      GD 3YR                  0.250                   0.016
4654038         $96,936.55      48.50                              0.250                   0.016
4654059         $292,188.37     80.00                              0.250                   0.016
4654175         $327,968.36     77.22                              0.250                   0.016
4654176         $235,820.42     66.48                              0.250                   0.016
4654207         $285,634.01     80.00                              0.250                   0.016
4654482         $277,000.00     71.95                              0.250                   0.016
4654506         $420,695.29     63.31                              0.250                   0.016
4654514         $248,960.72     76.92                              0.250                   0.016
4654539         $285,997.65     80.00                              0.250                   0.016
4654560         $291,813.97     74.43                              0.250                   0.016
4654580         $258,108.75     74.99                              0.250                   0.016
4654600         $90,636.78      75.00                              0.250                   0.016
4654695         $279,792.20     74.67                              0.250                   0.016
4654705         $380,217.61     70.43                              0.250                   0.016
4654713         $368,697.53     77.68                              0.250                   0.016
4654734         $251,288.37     85.00                   17         0.250                   0.016
4654955         $263,818.31     80.00                              0.250                   0.016
4655131         $287,796.73     80.00                              0.250                   0.016
4655137         $125,911.07     35.80                              0.250                   0.016
4655267         $253,600.00     80.00                              0.250                   0.016
4655357         $152,692.15     80.00                              0.250                   0.016
4655433         $279,802.38     80.00                              0.250                   0.016
4655524         $174,616.00     80.00                              0.250                   0.016
4655702         $261,800.64     67.18                              0.250                   0.016
4655705         $104,803.85     28.00                              0.250                   0.016
4655720         $316,909.45     74.99                              0.250                   0.016
4655730         $770,000.00     71.63                              0.250                   0.016
4655746         $160,859.88     74.98                              0.250                   0.016
4655753         $199,578.02     35.40                              0.250                   0.016
4655763         $302,229.00     69.00                              0.250                   0.016
4655770         $109,777.07     29.33                              0.250                   0.016
4655777         $114,752.44     45.10                              0.250                   0.016
4655783         $253,846.86     80.00                              0.250                   0.016
4655788         $164,655.36     45.21                              0.250                   0.016
4655793         $330,479.87     80.00                              0.250                   0.016
4655798         $235,646.03     74.98                              0.250                   0.016
4655805         $124,722.71     42.37                              0.250                   0.016
4655811         $239,109.53     80.00                              0.250                   0.016
4655820         $498,976.51     68.97                              0.250                   0.016
4655821         $266,208.19     79.88                              0.250                   0.016
4655824         $377,984.59     65.44                              0.250                   0.016
4655848         $231,832.08     80.00                              0.250                   0.016
4655905         $149,891.43     75.00                              0.250                   0.016
4655927         $291,390.12     80.00                              0.250                   0.016
4655928         $297,371.27     80.00                              0.250                   0.016
4655929         $227,489.19     80.00                              0.250                   0.016
4655931         $348,784.88     46.05                              0.250                   0.016
4655933         $421,681.16     80.00                              0.250                   0.016
4655934         $310,782.34     80.00                              0.250                   0.016
4655935         $262,239.93     80.00                              0.250                   0.016
4655936         $292,212.64     80.00                              0.250                   0.016
4655943         $393,177.07     79.44                              0.250                   0.016
4655944         $325,639.41     80.00                              0.250                   0.016
4655946         $148,879.94     71.26                              0.250                   0.016
4655949         $249,428.65     52.97                              0.250                   0.016
4655954         $423,750.50     71.43                              0.250                   0.016
4655958         $136,206.15     65.00                              0.250                   0.016
4655959         $419,157.46     80.00                              0.250                   0.016
4655960         $327,286.84     80.00                              0.250                   0.016
4655963         $254,676.67     74.99                              0.250                   0.016
4655967         $289,418.24     77.33                              0.250                   0.016
4655970         $400,000.00     80.00                              0.250                   0.016
4655976         $238,351.75     90.00                   17         0.250                   0.016
4656053         $269,000.00     37.89                              0.250                   0.016
4656077         $531,515.02     68.19                              0.250                   0.016
4656172         $164,538.97     74.16                              0.250                   0.016
4656178         $149,677.08     37.50                              0.250                   0.016
4656193         $77,795.44      62.12                              0.250                   0.016
4656215         $139,707.58     73.68                              0.250                   0.016
4656220         $49,966.44      65.79                              0.250                   0.016
4656223         $79,826.03      10.60                              0.250                   0.016
4656234         $508,934.78     55.14                              0.250                   0.016
4656236         $490,000.00     31.21                              0.250                   0.016
4656248         $199,560.79     50.00                              0.250                   0.016
4656273         $337,992.62     75.00                              0.250                   0.016
4656285         $152,562.73     66.05                              0.250                   0.016
4656313         $259,451.44     65.16                              0.250                   0.016
4656322         $190,788.43     74.98                              0.250                   0.016
4656330         $105,795.81     51.71                              0.250                   0.016
4656331         $349,238.99     71.43                              0.250                   0.016
4656342         $481,906.14     53.67                              0.250                   0.016
4656350         $455,976.12     69.56                              0.250                   0.016
4656352         $299,327.87     60.61                              0.250                   0.016
4656359         $455,047.57     80.00                              0.250                   0.016
4656362         $541,795.53     79.85                              0.250                   0.016
4656372         $389,160.49     79.92                              0.250                   0.016
4656378         $258,126.69     79.97                              0.250                   0.016
4656428         $307,782.62     80.00                              0.250                   0.016
4656437         $269,659.54     84.33                   12         0.250                   0.016
4656513         $231,505.58     80.00                              0.250                   0.016
4656514         $239,273.63     76.19                              0.250                   0.016
4656517         $367,215.76     80.00                              0.250                   0.016
4656520         $393,151.86     80.00                              0.250                   0.016
4656523         $317,841.42     74.94                              0.250                   0.016
4656527         $238,679.92     79.77                              0.250                   0.016
4656528         $259,440.32     80.00                              0.250                   0.016
4656529         $339,238.27     80.00                              0.250                   0.016
4656531         $415,095.52     80.00                              0.250                   0.016
4656532         $230,906.64     76.66                              0.250                   0.016
4656533         $263,408.53     80.00                              0.250                   0.016
4656537         $260,403.48     79.82                              0.250                   0.016
4656538         $232,513.31     61.32                              0.250                   0.016
4656540         $509,221.85     80.00                              0.250                   0.016
4656542         $229,342.07     90.00                              0.250                   0.016
4656544         $257,865.69     80.00                              0.250                   0.016
4656545         $367,207.84     80.00                              0.250                   0.016
4656562         $444,435.40     80.00                              0.250                   0.016
4656669         $242,828.49     79.02                              0.250                   0.016
4656739         $252,244.82     80.00                              0.250                   0.016
4656741         $292,000.00     80.00                              0.250                   0.016
4656743         $509,621.51     75.00                              0.250                   0.016
4656762         $294,318.21     55.66                              0.250                   0.016
4656771         $251,373.78     80.00                              0.250                   0.016
4656780         $498,976.51     78.13                              0.250                   0.016
4656795         $621,549.81     40.13                              0.250                   0.016
4656817         $339,275.40     80.00                              0.250                   0.016
4656850         $403,207.96     65.08                              0.250                   0.016
4656862         $249,827.96     58.82                              0.250                   0.016
4656891         $423,685.33     80.00                              0.250                   0.016
4656902         $135,216.99     57.42                              0.250                   0.016
4656913         $254,801.08     75.00                              0.250                   0.016
4656929         $623,548.36     74.29                              0.250                   0.016
4656943         $237,214.80     69.99                              0.250                   0.016
4656979         $303,774.38     80.00                              0.250                   0.016
4657006         $245,821.95     76.88                              0.250                   0.016
4657032         $500,000.00     73.53                              0.250                   0.016
4657051         $373,229.67     90.00                   12         0.250                   0.016
4657074         $44,852.47      58.44                              0.250                   0.016
4657099         $282,395.46     80.00                              0.250                   0.016
4657101         $164,648.34     63.41                              0.250                   0.016
4657119         $249,804.98     73.86                              0.250                   0.016
4657127         $59,891.29      70.59                              0.250                   0.016
4657135         $474,647.48     59.38                              0.250                   0.016
4657177         $119,332.87     55.81                              0.250                   0.016
4657199         $239,472.93     57.14                              0.250                   0.016
4657219         $268,215.29     76.69                              0.250                   0.016
4657230         $117,840.62     74.98                              0.250                   0.016
4657262         $326,763.32     54.05                              0.250                   0.016
4657299         $534,592.91     69.03                              0.250                   0.016
4657306         $274,008.12     74.32                              0.250                   0.016
4657315         $300,770.97     70.00                              0.250                   0.016
4657377         $374,002.51     78.95                              0.250                   0.016
4657380         $329,702.91     80.00                              0.250                   0.016
4657385         $386,805.08     69.86                              0.250                   0.016
4657396         $307,343.63     80.00                              0.250                   0.016
4657405         $79,822.52      62.50                              0.250                   0.016
4657416         $333,835.96     77.01                              0.250                   0.016
4657424         $286,749.36     57.48                              0.250                   0.016
4657445         $267,326.79     80.00                              0.250                   0.016
4657467         $43,306.12      74.96                              0.250                   0.016
4657472         $79,826.03      43.48                              0.250                   0.016
4657484         $40,116.01      60.00                              0.250                   0.016
4657492         $273,700.00     79.99                              0.250                   0.016
4657536         $154,903.65     68.89                              0.250                   0.016
4657674         $330,000.00     76.17                              0.250                   0.016
4657699         $351,738.76     80.00                              0.250                   0.016
4657933         $254,537.58     90.00                   01         0.250                   0.016
4657940         $271,798.14     80.00                              0.250                   0.016
4658005         $492,443.32     80.00                              0.250                   0.016
4658028         $307,500.00     75.00                              0.250                   0.016
4658157         $263,413.96     80.00                              0.250                   0.016
4658277         $449,682.39     37.50                              0.250                   0.016
4658292         $270,000.00     75.00                              0.250                   0.016
4658351         $350,913.50     90.00                   06         0.250                   0.016
4658369         $229,837.67     71.88                              0.250                   0.016
4658501         $310,280.86     90.00                   12         0.250                   0.016
4658509         $310,041.83     89.92                   17         0.250                   0.016
4658520         $243,818.92     84.14                   11         0.250                   0.016
4658527         $270,568.33     75.00                              0.250                   0.016
4658581         $424,000.00     80.00                              0.250                   0.016
4658624         $102,779.21     69.99                              0.250                   0.016
4658741         $250,835.81     83.67                   11         0.250                   0.016
4658785         $532,094.81     75.00                              0.250                   0.016
4658824         $99,931.18      68.97                              0.250                   0.016
4658867         $271,793.03     80.00                              0.250                   0.016
4658972         $255,000.00     62.96                              0.250                   0.016
4659005         $55,834.19      71.25                              0.250                   0.016
4659043         $181,759.85     66.18                              0.250                   0.016
4659069         $64,808.08      56.48                              0.250                   0.016
4659075         $354,676.38     80.00                              0.250                   0.016
4659084         $38,887.31      66.10                              0.250                   0.016
4659094         $369,711.36     54.90                              0.250                   0.016
4659117         $333,800.00     82.22                              0.250                   0.016
4659119         $257,991.59     89.98                   06         0.250                   0.016
4659140         $346,755.94     80.00                              0.250                   0.016
4659196         $262,116.89     47.73                              0.250                   0.016
4659210         $249,375.08     60.83                              0.250                   0.016
4659212         $259,653.46     72.22                              0.250                   0.016
4659225         $314,580.15     75.00                              0.250                   0.016
4659228         $232,340.00     90.00                   06         0.250                   0.016
4659230         $118,836.50     70.00                              0.250                   0.016
4659234         $92,858.73      74.40                              0.250                   0.016
4659246         $351,400.00     63.32                              0.250                   0.016
4659248         $164,278.50     70.00                              0.250                   0.016
4659251         $342,514.25     78.85                              0.250                   0.016
4659265         $84,791.82      54.49                              0.250                   0.016
4659266         $319,774.15     82.05                   17         0.250                   0.016
4659283         $649,552.68     70.27                              0.250                   0.016
4659297         $152,783.32     69.55                              0.250                   0.016
4659298         $486,500.00     70.00                              0.250                   0.016
4659302         $67,307.59      75.00                              0.250                   0.016
4659309         $385,841.69     80.00                              0.250                   0.016
4659318         $339,760.03     80.00                              0.250                   0.016
4659327         $279,599.48     80.00                              0.250                   0.016
4659336         $296,301.05     71.45                              0.250                   0.016
4659345         $250,737.18     79.34                              0.250                   0.016
4659356         $139,910.73     80.00                              0.250                   0.016
4659359         $338,538.91     79.76                              0.250                   0.016
4659370         $32,157.50      74.88                              0.250                   0.016
4659388         $146,601.48     75.00                              0.250                   0.016
4659423         $335,756.81     78.14                              0.250                   0.016
4659469         $518,633.69     71.59                              0.250                   0.016
4659570         $280,000.00     75.68                              0.250                   0.016
4659588         $245,169.44     77.94                              0.250                   0.016
4659593         $460,385.56     69.85                              0.250                   0.016
4659602         $453,778.90     78.45                              0.250                   0.016
4659603         $120,684.07     74.98                              0.250                   0.016
4659604         $24,967.34      15.15                              0.250                   0.016
4659605         $279,209.78     80.00                              0.250                   0.016
4659608         $139,616.61     42.42                              0.250                   0.016
4659611         $363,463.41     80.00                              0.250                   0.016
4659613         $119,836.78     48.00                              0.250                   0.016
4659614         $243,674.79     80.00                              0.250                   0.016
4659616         $74,895.90      49.18                              0.250                   0.016
4659621         $102,861.32     52.15                              0.250                   0.016
4659624         $240,062.58     73.92                              0.250                   0.016
4659632         $274,598.65     31.98                              0.250                   0.016
4659634         $257,687.52     80.00                              0.250                   0.016
4659639         $504,248.08     24.88                              0.250                   0.016
4659642         $100,969.35     74.96                              0.250                   0.016
4659667         $199,264.82     58.82                              0.250                   0.016
4659670         $59,848.47      63.16                              0.250                   0.016
4659680         $267,251.20     80.00                              0.250                   0.016
4659683         $153,616.78     74.99                              0.250                   0.016
4659688         $63,618.48      74.94                              0.250                   0.016
4659689         $253,600.00     80.00                              0.250                   0.016
4659691         $257,224.05     80.00                              0.250                   0.016
4659695         $234,960.02     75.71                              0.250                   0.016
4659704         $269,629.02     78.26                              0.250                   0.016
4659708         $71,721.99      59.18                              0.250                   0.016
4659711         $92,876.04      75.00                              0.250                   0.016
4659716         $338,733.95     79.07                              0.250                   0.016
4659720         $79,888.97      67.80                              0.250                   0.016
4659730         $384,421.01     76.24                              0.250                   0.016
4659742         $259,639.14     74.93                              0.250                   0.016
4659743         $304,572.39     62.24                              0.250                   0.016
4659745         $292,293.55     75.00                              0.250                   0.016
4659747         $319,964.20     90.00                   06         0.250                   0.016
4659753         $419,405.21     80.00                              0.250                   0.016
4659754         $409,042.88     80.00                              0.250                   0.016
4659759         $337,022.04     90.00                   06         0.250                   0.016
4659761         $174,422.73     46.67                              0.250                   0.016
4659763         $226,878.26     80.00                              0.250                   0.016
4659789         $69,769.09      50.04                              0.250                   0.016
4659807         $287,786.26     80.00                              0.250                   0.016
4659836         $257,208.97     80.00                              0.250                   0.016
4659847         $243,840.38     80.00                              0.250                   0.016
4659867         $599,412.08     56.76                              0.250                   0.016
4659883         $179,729.30     72.00                              0.250                   0.016
4659895         $409,436.67     75.72                              0.250                   0.016
4659915         $289,585.17     67.44                              0.250                   0.016
4659922         $311,588.34     80.00                              0.250                   0.016
4659931         $99,868.06      45.45                              0.250                   0.016
4659936         $257,300.00     77.97                              0.250                   0.016
4659937         $331,090.86     80.00                              0.250                   0.016
4659960         $99,866.71      60.61                              0.250                   0.016
4659972         $186,241.17     69.98                              0.250                   0.016
4659978         $108,848.72     60.56                              0.250                   0.016
4659979         $244,661.69     77.78                              0.250                   0.016
4659981         $371,483.70     61.49                              0.250                   0.016
4659989         $309,569.75     74.70                              0.250                   0.016
4660003         $247,166.75     90.00                   06         0.250                   0.016
4660004         $259,612.87     63.88                              0.250                   0.016
4660005         $310,546.10     69.89                              0.250                   0.016
4660012         $272,962.71     80.00                              0.250                   0.016
4660016         $229,683.98     64.97                              0.250                   0.016
4660025         $163,763.03     60.74                              0.250                   0.016
4660028         $119,831.75     58.54                              0.250                   0.016
4660039         $257,634.62     71.97                              0.250                   0.016
4660045         $317,141.10     80.00                              0.250                   0.016
4660048         $99,606.67      59.17                              0.250                   0.016
4660052         $119,749.34     75.00                              0.250                   0.016
4660053         $242,854.59     74.98                              0.250                   0.016
4660063         $101,248.85     70.00                              0.250                   0.016
4660065         $246,821.23     67.32                              0.250                   0.016
4660080         $363,999.19     79.76                              0.250                   0.016
4660083         $442,695.75     80.00                              0.250                   0.016
4660091         $238,658.12     70.29                              0.250                   0.016
4660097         $255,675.11     75.00                              0.250                   0.016
4660107         $349,484.06     66.04                              0.250                   0.016
4660111         $278,794.93     84.95                              0.250                   0.016
4660118         $69,617.17      53.85                              0.250                   0.016
4660120         $44,940.01      52.94                              0.250                   0.016
4660176         $255,000.00     73.28                              0.250                   0.016
4660183         $231,844.34     80.00                              0.250                   0.016
4660192         $291,799.04     83.43                   17         0.250                   0.016
4660243         $229,484.69     79.31                              0.250                   0.016
4660244         $284,428.26     75.00                              0.250                   0.016
4660246         $442,216.92     80.00                              0.250                   0.016
4660248         $279,433.37     80.00                              0.250                   0.016
4660250         $149,187.73     65.00                              0.250                   0.016
4660251         $264,446.50     62.80                              0.250                   0.016
4660255         $98,791.11      75.00                              0.250                   0.016
4660260         $112,262.63     59.21                              0.250                   0.016
4660261         $284,348.63     63.33                              0.250                   0.016
4660270         $435,089.32     80.00                              0.250                   0.016
4660274         $157,160.95     75.00                              0.250                   0.016
4660277         $79,753.41      47.06                              0.250                   0.016
4660278         $101,773.73     75.00                              0.250                   0.016
4660279         $340,051.55     80.00                              0.250                   0.016
4660280         $411,883.31     77.92                              0.250                   0.016
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6509733          257143.62      80.00                              0.250                   0.016
6510337          447683.8       80.00                              0.250                   0.016
6510706          254779.48      94.99                   17         0.250                   0.016
6510707          487672.56      80.00                              0.250                   0.016
6512102          349740.25      77.78                              0.250                   0.016
6512362          489388.76      70.00                              0.250                   0.016
6512382          419710.96      70.00                              0.250                   0.016
6513499          272807.31      78.45                              0.250                   0.016
6513958          239834.83      77.92                              0.250                   0.016
6513975          242079.02      95.00                   17         0.250                   0.016
6513981          347754.39      80.00                              0.250                   0.016
6514708          269645.57      90.00                   33         0.250                   0.016
6515186          120429.22      48.24                              0.250                   0.016
6515284          264660.87      66.25                              0.250                   0.016
6515598          706023.7       70.00                              0.250                   0.016
6515836          473777.24      73.21                              0.250                   0.016
6516053          231582.27      90.00                   17         0.250                   0.016
6517078          247342.18      90.00                    6         0.250                   0.016
6517095          149899.35      60.00                              0.250                   0.016
6517397          239976.45      94.98                   33         0.250                   0.016
6517805          259811.82      49.52                              0.250                   0.016
6518143          311546.93      78.99                              0.250                   0.016
6518183          44972.74       31.03                              0.250                   0.016
6518572          259816.5       65.00                              0.250                   0.016
6519080          430103.8       80.00                              0.250                   0.016
6519392          349733.68      61.11                              0.250                   0.016
6519769          488438.34      85.00                    6         0.250                   0.016
6519969          237155.11      73.08                              0.250                   0.016
6520537          264417.91      90.00                   17         0.250                   0.016
6520701          227700.71      95.00                    6         0.250                   0.016
6521484          228326.2       79.99                              0.250                   0.016
6521540          239031.17      80.00                              0.250                   0.016
6522858          282964.78      78.00                              0.250                   0.016
6523796          291799.05      80.00                              0.250                   0.016
6524580          260829.27      90.00                   33         0.250                   0.016
6524608          299788.26      71.31                              0.250                   0.016
6525003          411709.21      80.00                              0.250                   0.016
6525656          333114.73      80.00                              0.250                   0.016
6525789          267815.56      80.00                              0.250                   0.016
6525900          283284.28      70.00                              0.250                   0.016
6527328          399724.72      61.54                              0.250                   0.016
6527745          279802.38      80.00                              0.250                   0.016
6528401          249788.54      30.12                              0.250                   0.016
6528901          244893.52      74.32                              0.250                   0.016
6529033          258802.92      62.41                              0.250                   0.016
6529281          343757.21      80.00                              0.250                   0.016
6529285          259821.07      89.29                   17         0.250                   0.016
6529617          269818.84      72.97                              0.250                   0.016
6530158          249319.41      67.43                              0.250                   0.016
6530332          293392.78      79.99                              0.250                   0.016
6530424          499647.11      75.76                              0.250                   0.016
6531485          288796.03      77.07                              0.250                   0.016
6532141          304795.35      76.25                              0.250                   0.016
6532235          231840.34      80.00                              0.250                   0.016
6532931          249804.98      40.98                              0.250                   0.016
6533924          231832.09      80.00                              0.250                   0.016
6534052          709523.6       47.33                              0.250                   0.016
6534090          274805.91      89.58                   33         0.250                   0.016
6534124          323782.6       90.00                    1         0.250                   0.016
6534403          244303.15      80.00                              0.250                   0.016
6535008          230691.13      95.00                   13         0.250                   0.016
6535297          329778.58      60.00                              0.250                   0.016
6535644          237332.37      95.00                    6         0.250                   0.016
6535725          243832.08      80.00                              0.250                   0.016
6535833          379475.26      80.00                              0.250                   0.016
6536904          234816.68      71.43                              0.250                   0.016
6537157          417565.08      64.29                              0.250                   0.016
6537664          297789.67      80.00                              0.250                   0.016
6537689          331777.23      80.00                              0.250                   0.016
6537728          333370.42      80.00                              0.250                   0.016
6537754          237245.71      95.00                   12         0.250                   0.016
6537792          263463.92      65.91                              0.250                   0.016
6537810          324740.1       46.43                              0.250                   0.016
6538107          263808.92      80.00                              0.250                   0.016
6538792          649541.24      74.71                              0.250                   0.016
6539116          281680.1       73.82                              0.250                   0.016
6540311          256327.89      88.14                   33         0.250                   0.016
6540873          249809.77      74.40                              0.250                   0.016
6541471           965618        50.86                              0.250                   0.016
6541520          243932.02      79.99                              0.250                   0.016
6541889          263799.12      80.00                              0.250                   0.016
6542122          349733.68      55.03                              0.250                   0.016
6542750          335644.41      89.93                   13         0.250                   0.016
6542827          299782.87      69.77                              0.250                   0.016
6543084          330232.74      80.00                              0.250                   0.016
6543400          266801.85      60.68                              0.250                   0.016
6543437          246321.59      85.00                   17         0.250                   0.016
6543703          248628.78      94.99                   24         0.250                   0.016
6543710          263918.25      95.00                   17         0.250                   0.016
6545357          255819.31      32.69                              0.250                   0.016
6545772          239630.75      65.52                              0.250                   0.016
6545917          284573.01      95.00                   24         0.250                   0.016
6545969          262548.91      90.00                    6         0.250                   0.016
6546335          274356.23      84.48                   17         0.250                   0.016
6546871          303779.98      80.00                              0.250                   0.016
6547561          260815.78      71.51                              0.250                   0.016
6547725          239830.61      44.86                              0.250                   0.016
6548265          319774.15      75.62                              0.250                   0.016
6548272          289773.77      69.04                              0.250                   0.016
6548442          355436.02      71.14                              0.250                   0.016
6549188          349733.68      58.72                              0.250                   0.016
6550278          255810.01      80.00                              0.250                   0.016
6550304          599565.74      80.00                              0.250                   0.016
6551344          311785.28      80.00                              0.250                   0.016
6553525           268800        80.00                              0.250                   0.016
6553728          262784.42      73.36                              0.250                   0.016
6554196          242460.71      89.99                   17         0.250                   0.016
6555552          252821.44      54.41                              0.250                   0.016
6555908           234000        90.00                   13         0.250                   0.016
6556375          299788.26      74.07                              0.250                   0.016
6559095          399717.68      36.36                              0.250                   0.016
6560422          274795.91      77.46                              0.250                   0.016
6561776          251476.81      70.00                              0.250                   0.016
6567346          243023.98      80.00                              0.250                   0.016
6567560          249819.06      56.82                              0.250                   0.016

              $264,492,519.74


</TABLE>



<PAGE>




                                   EXHIBIT F-3


            [Schedule of Mortgage Loans Serviced by Other Servicers]

NASCOR
NMI / 1997-21 Exhibit F-3 (Part A)
20 & 30 YEAR FIXED RATE NON RELOCATION LOANS


<TABLE>
<CAPTION>


                                                                                      NET
MORTGAGE                                                               MORTGAGE     MORTGAGE      CURRENT     ORIGINAL    SCHEDULED
LOAN                                               ZIP     PROPERTY    INTEREST     INTEREST      MONTHLY      TERM TO     MATURITY
NUMBER       CITY                      STATE      CODE       TYPE        RATE         RATE        PAYMENT     MATURITY       DATE
- ------       ----                      -----      ----       ----        ----         ----        -------     --------       ----
<S>          <C>                         <C>      <C>        <C>        <C>          <C>         <C>            <C>         <C> 
4633833      TONKA BAY                   MN       55331      SFD        7.625        7.359       $4,600.66       360       1-Oct-27
4634272      NORTHBROOK                  IL       60062      SFD        8.000        7.734       $1,981.17       360       1-Jul-27
4636942      ATLANTA                     GA       30342      SFD        8.375        8.109       $2,347.10       360       1-Aug-27
4637290      GAITHERSBURG                MD       20878      SFD        7.625        7.359       $1,740.82       360       1-Aug-27
4637302      HURRICANE                   UT       84737      SFD        8.375        8.109       $1,945.78       360       1-Aug-27
4637432      MARINA                      CA       93933      SFD        8.000        7.734       $1,965.76       360       1-Aug-27
4640605      OLDSMAR                     FL       34677      SFD        8.250        7.984       $1,957.05       360       1-Aug-27
4640838      WINTER PARK                 FL       32789      SFD        8.000        7.734       $2,201.29       360       1-Aug-27
4641088      HOFFMAN ESTATES             IL       60195      SFD        8.500        8.234       $2,081.84       360       1-Aug-27
4645264      DEERFIELD                   IL       60015      SFD        7.750        7.484       $3,159.38       360       1-Oct-27
4647695      MINNETONKA                  MN       55345      SFD        7.750        7.484       $1,805.36       360       1-Oct-27
4647696      BLOOMINGTON                 MN       55438      SFD        8.000        7.734       $2,971.02       360       1-Oct-27
4647757      MIAMI                       FL       33182      SFD        8.375        8.109       $2,253.99       360       1-Jun-27
4649019      HERNDON                     VA       20171      SFD        7.250        6.984       $2,421.73       360       1-Sep-27
4649310      SYLVANIA                    OH       43560      SFD        8.250        7.984       $2,566.33       360       1-Nov-27
4651688      ST GEORGE ISLAND            FL       32328      SFD        7.875        7.609       $1,653.16       360       1-Sep-27
4651830      PINELLAS PARK               FL       34666      SFD        7.875        7.609       $4,031.47       345       1-Jun-26
4651851      NASHVILLE                   TN       37205      SFD        7.875        7.609       $3,444.08       360       1-Sep-27
4652526      MIRAMAR                     FL       33027      SFD        8.125        7.859       $2,019.22       360       1-Sep-27
4653503      BERKELEY                    CA       94708      SFD        7.875        7.609       $1,653.16       360       1-Sep-27
4654015      WENHAM                      MA       01984      SFD        7.875        7.609       $1,925.06       360       1-Sep-27
4654033      LAGUNA NIGUEL               CA       92677      SFD        7.750        7.484       $2,123.45       360       1-Oct-27
4654046      DANA POINT                  CA       92629      SFD        8.125        7.859       $1,700.32       360       1-Sep-27
4654051      ALPHARETTA                  GA       30022      SFD        7.625        7.359       $1,925.20       360       1-Oct-27
4654068      PARADISE VALLEY             AZ       85253      SFD        8.500        8.234       $4,459.70       360       1-Sep-27
4654086      SEBASTOPOL                  CA       95472      SFD        7.875        7.609       $2,943.78       360       1-Sep-27
4654142      SAN JOSE                    CA       95125      SFD        8.125        7.859       $1,937.92       360       1-Sep-27
4654197      SHINGLE SPRINGS             CA       95682      SFD        7.625        7.359       $1,806.29       360       1-Sep-27
4654630      PAPILLION                   NE       68046      SFD        7.875        7.609       $1,846.76       360       1-Nov-27
4655065      ALBUQUERQUE                 NM       87111      SFD        7.875        7.609       $1,812.67       360       1-Oct-27
4655072      GILROY                      CA       95020      SFD        7.500        7.234       $1,678.11       360       1-Sep-27
4655610      KNOXVILLE                   TX       37909      SFD        7.625        7.359       $1,714.63       360       1-Sep-27
4655766      ATLANTA                     GA       30306      SFD        7.625        7.359       $2,010.14       360       1-Nov-27
4656224      ATLANTA                     GA       30350      SFD        7.375        7.109       $2,078.59       360       1-Oct-27
4656830      ALPHARETTA                  GA       30022      SFD        7.500        7.234       $1,929.84       360       1-Oct-27
4656842      DULUTH                      GA       30155      SFD        7.625        7.359       $1,677.47       360       1-Sep-27
4656875      CORAL SPRINGS               FL       33071      SFD        8.000        7.734       $2,444.17       360       1-Oct-27
4656881      ATLANTA                     GA       30306      SFD        7.625        7.359       $1,732.68       360       1-Oct-27
4656941      FAYETTEVILLE                GA       30215      SFD        7.750        7.484       $1,663.51       360       1-Sep-27
4657043      WHEATON                     IL       60187      SFD        7.875        7.609       $1,914.19       360       1-Sep-27
4657118      MESA                        AZ       85205      SFD        7.750        7.484       $2,223.75       360       1-Oct-27
4657642      BURLINGAME                  CA       94010      SFD        7.875        7.609       $3,068.14       360       1-Oct-27
4657652      PARKLAND                    FL       33076      SFD        8.000        7.734       $1,790.39       360       1-Oct-27
4659017      TAMPA                       FL       33611      SFD        8.125        7.859       $2,041.87       360       1-Nov-27
4664416      MISSION VIEJO               CA       92692      SFD        7.875        7.609       $1,787.30       360       1-Oct-27
4664424      FLAGSTAFF                   AZ       86004      SFD        7.750        7.484       $2,134.91       360       1-Oct-27
4664429      CASTRO VALLEY               CA       94552      SFD        8.125        7.859       $1,930.50       360       1-Oct-27
4664437      EL PASO                     TX       79922      SFD        7.750        7.484       $2,535.75       360       1-Oct-27
4664440      WALNUT CREEK                CA       94598      SFD        7.500        7.234       $1,748.04       360       1-Nov-27
4664458      FORT MYERS BEACH            FL       33931      SFD        8.000        7.734       $1,849.09       360       1-Nov-27
4664467      DENVER                      CO       80204      LCO        7.750        7.484       $2,063.27       360       1-Oct-27
4664478      FOLSOM                      CA       95630      SFD        8.500        8.234       $1,863.85       360       1-Oct-27
4664492      PACIFICA                    CA       94044      SFD        7.875        7.609       $1,943.19       360       1-Oct-27
4664500      MONTE SERENO                CA       95030      SFD        8.250        7.984       $1,968.32       360       1-Jan-27
4664531      GARRISON                    NY       10524      SFD        8.000        7.734       $2,007.57       360       1-Oct-27
4664544      TACOMA                      WA       98465      SFD        7.875        7.609       $1,705.37       360       1-Oct-27
4664554      CAREFREE                    AZ       85377      SFD        7.625        7.359       $1,958.47       360       1-Oct-27
4664574      CUPERTINO                   CA       95014      SFD        7.250        6.984       $2,967.47       360       1-Oct-27
4664588      WADSWORTH                   IL       60083      SFD        7.875        7.609       $1,711.17       360       1-Oct-27
4664598      SAN JOSE                    CA       95120      SFD        8.000        7.734       $1,907.79       360       1-Nov-27
4664609      CHICAGO                     IL       60657      HCO        8.125        7.859       $1,752.30       360       1-Oct-27
4664614      SAN JOSE                    CA       95120      SFD        7.625        7.359       $3,935.33       360       1-Oct-27
4664618      TAMPA                       FL       33611      SFD        8.125        7.859       $2,572.75       360       1-Aug-27
4664635      BATON ROUGE                 LA       70808      SFD        7.500        7.234       $1,762.03       360       1-Oct-27
4664655      ALTADENA AREA               CA       91001      SFD        7.750        7.484       $1,888.46       360       1-Oct-27
4664674      WASHINGTON                  DC       20007      PUD        7.875        7.609       $3,480.33       360       1-Oct-27
4664788      SAN JOSE                    CA       95132      SFD        8.500        8.234       $1,876.15       360       1-Oct-27
4664789      FREMONT                     CA       94539      SFD        7.875        7.609       $2,200.59       360       1-Oct-27
4664791      NASHVILLE                   TN       37221      SFD        8.125        7.859       $2,393.81       360       1-Oct-27
4664792      FREMONT                     CA       94536      SFD        8.125        7.859       $1,819.12       360       1-Oct-27
4664797      HILTON HEAD ISLAND          SC       29928      HCO        7.875        7.609       $2,708.13       360       1-Oct-27
4664803      SAN FRANCISCO               CA       94116      SFD        7.625        7.359       $2,024.30       360       1-Oct-27
4664817      NAPLES                      FL       34109      SFD        8.000        7.734       $1,834.41       360       1-Aug-27
4664820      RESTON                      VA       22094      SFD        7.750        7.484       $1,977.29       360       1-Oct-27
4664825      GILROY                      CA       95020      SFD        7.250        6.984       $1,671.34       360       1-Oct-27
4664826      FREMONT                     CA       94539      SFD        8.000        7.734       $2,348.05       360       1-Oct-27
4664830      SEATTLE                     WA       98155      SFD        7.875        7.609       $1,806.15       360       1-Oct-27
4664836      WINDERMERE                  FL       34786      SFD        7.750        7.484       $3,725.35       360       1-Oct-27
4664840      ALAMEDA                     CA       94501      SFD        8.250        7.984       $1,855.63       360       1-Oct-27
4664885      COLUMBUS                    GA       31904      SFD        7.875        7.609       $2,229.15       240       1-Oct-17
4664961      CHARLOTTE                   NC       28269      SFD        7.750        7.484       $1,812.52       360       1-Oct-27
4664998      SARASOTA                    FL       34236      HCO        7.750        7.484       $1,657.07       360       1-Oct-27
4665004      SAN JOSE                    CA       95135      SFD        8.000        7.734       $2,443.44       360       1-Oct-27
4665010      LIVERMORE                   CA       94550      SFD        7.750        7.484       $2,199.39       360       1-Oct-27
4665083      STONE HARBOR                NJ       08247      LCO        7.875        7.609       $1,885.19       360       1-Oct-27
4665120      BRENTWOOD                   TN       37027      SFD        7.750        7.484       $2,163.56       360       1-Oct-27
4665132      PLEASANTON                  CA       94566      SFD        8.000        7.734       $1,937.14       360       1-Oct-27
4665145      MERRITT ISLAND              FL       32953      SFD        7.875        7.609       $1,667.66       360       1-Oct-27
4665150      OAKLAND                     CA       94705      SFD        8.000        7.734       $3,646.81       360       1-Nov-27
4665187      SAN FRANCISCO               CA       94121      THS        7.375        7.109       $1,837.20       360       1-Oct-27
4665692      LOS GATOS                   CA       95030      SFD        7.625        7.359       $2,565.76       360       1-Oct-27
4665701      MONTE SERENO                CA       95030      SFD        7.250        6.984       $2,387.62       360       1-Nov-27
4665719      MADISON                     NJ       07940      SFD        8.000        7.734       $1,684.72       360       1-Sep-27
4665726      SAN MATEO                   CA       94401      SFD        7.750        7.484       $2,149.24       360       1-Oct-27
4665751      VIRGINIA BEACH              VA       23451      SFD        8.000        7.734       $2,146.26       360       1-Oct-27
4665755      WESTPORT                    CT       06880      SFD        7.500        7.234       $2,447.26       360       1-Oct-27
4665773      SAN JOSE                    CA       95120      SFD        8.000        7.734       $3,204.94       360       1-Oct-27
4665788      SAN JOSE                    CA       95112      HCO        8.125        7.859       $1,897.46       360       1-Oct-27
4665795      BETHANY BEACH               DE       19930      SFD        8.125        7.859       $1,811.70       360       1-Nov-27
4665817      PALO ALTO                   CA       94301      SFD        7.875        7.609       $2,355.03       360       1-Nov-27
4665827      HOLLYWOOD                   FL       33021      SFD        8.000        7.734       $2,751.62       360       1-Oct-27
4665835      WHEATON                     IL       60187      SFD        8.250        7.984       $2,103.55       360       1-Oct-27
4665843      MILLBRAE                    CA       94030      SFD        7.750        7.484       $2,407.15       360       1-Oct-27
4665850      WEST ROXBURY                MA       02132      SFD        8.000        7.734       $2,056.37       360       1-Oct-27
4665860      BROOKFIELD                  CT       06804      SFD        8.000        7.734       $1,783.05       360       1-Oct-27
4665863      WELLESLEY                   MA       02181      SFD        7.875        7.609       $2,566.75       360       1-Oct-27
4665870      SAN JOSE                    CA       95135      SFD        7.750        7.484       $2,415.03       360       1-Oct-27
4666054      SOUTHBOROUGH                MA       01772      SFD        7.750        7.484       $2,368.71       300       1-Oct-22
4666055      ODESSA                      FL       33556      SFD        7.875        7.609       $1,695.94       360       1-Oct-27
4666057      PHOENIX                     AZ       85048      SFD        8.000        7.734       $1,836.62       360       1-Oct-27
4666060      BAINBRIDGE ISLAND           WA       98110      SFD        7.750        7.484       $1,891.33       360       1-Oct-27
4666064      TAMPA                       FL       33629      SFD        7.375        7.109       $1,643.46       360       1-Oct-27
4666066      WESTLAKE VILLAGE            CA       91361      SFD        7.750        7.484       $2,518.19       360       1-Oct-27
4666068      HUNTINGTON BEACH            CA       92648      SFD        8.000        7.734       $4,255.84       360       1-Oct-27
4666069      SAN JOSE                    CA       95131      SFD        7.875        7.609       $1,703.92       360       1-Nov-27
4666072      RIDGEFIELD                  CT       06877      SFD        7.500        7.234       $2,215.12       360       1-Nov-27
4666074      HIGHLAND                    MD       20777      SFD        7.750        7.484       $1,719.39       360       1-Oct-27
4666075      LONGBOAT KEY                FL       34228      HCO        7.875        7.609       $1,674.92       360       1-Oct-27
4666084      STAMFORD                    CT       06903      SFD        7.250        6.984       $1,734.78       360       1-Oct-27
4666362      SAN JOSE                    CA       95135      SFD        7.750        7.484       $2,596.00       360       1-Oct-27
4666407      LAKELAND                    FL       33813      SFD        7.750        7.484       $1,902.07       360       1-Oct-27
4666419      GREENWICH                   CT       06830      SFD        7.500        7.234       $1,608.20       360       1-Oct-27
4666427      OAKLAND                     CA       94611      SFD        8.125        7.859       $2,220.07       360       1-Oct-27
4666437      WOOD RIDGE                  NJ       07481      SFD        8.125        7.859       $2,205.22       360       1-Nov-27
4666448      NORWALK                     CT       06850      SFD        7.875        7.609       $1,831.97       360       1-Oct-27
4666461      KESWICK                     VA       22947      SFD        7.750        7.484       $2,149.23       360       1-Nov-27
4666470      PLEASANTON                  CA       94588      SFD        7.875        7.609       $2,798.77       360       1-Oct-27
4666473      CARMELVALLEY                CA       93924      SFD        8.250        7.984       $2,944.97       360       1-May-27
4666490      SAN JOSE                    CA       95118      SFD        7.750        7.484       $2,299.69       360       1-Oct-27
4666492      SCOTTSDALE                  AZ       85250      SFD        7.500        7.234       $1,838.94       360       1-Oct-27
4666496      CUPERTINO                   CA       95014      SFD        7.250        6.984       $3,138.02       360       1-Nov-27
4666497      SARATOGA                    CA       95070      SFD        7.750        7.484       $3,367.14       360       1-Oct-27
4666502      FOSTER CITY                 CA       94404      SFD        7.750        7.484       $2,865.65       360       1-Oct-27
4666504      ARMONK                      NY       10504      SFD        7.375        7.109       $4,144.05       360       1-Oct-27
4666512      FREMONT                     CA       94539      SFD        7.375        7.109       $3,177.11       360       1-Oct-27
4666516      CHARLOTTE                   NC       28226      SFD        7.625        7.359       $2,831.17       360       1-Oct-27
4666524      BELLEVUE                    WA       98005      SFD        8.000        7.734       $1,834.42       360       1-Oct-27
4667634      CONCORD                     MA       01742      SFD        7.250        6.984       $3,871.36       360       1-Oct-27
4667651      MIDLAND                     GA       31820      SFD        7.625        7.359       $1,875.65       360       1-Oct-27
4667930      OMAHA                       NE       68118      SFD        7.750        7.484       $1,905.66       360       1-Nov-27
4679468      FAYETTEVILLE                GA       30215      SFD        7.375        7.109       $2,188.82       240       1-Nov-17
</TABLE>


COUNT:   141
WAC:       7.826749483
WAM:     355.6437794
WALTV:    75.99028319
<PAGE>
<TABLE>
<CAPTION>
                CUT-OFF
MORTGAGE         DATE                              MORTGAGE                 T.O.P.      MASTER
LOAN           PRINCIPAL                          INSURANCE     SERVICE    MORTGAGE    SERVICE
NUMBER          BALANCE        LTV     SUBSIDY       CODE         FEE        LOAN        FEE
- ------          -------        ---     -------       ----         ---        ----        ---
<S>            <C>            <C>      <C>         <C>           <C>        <C>         <C>
4633833       $649,056.10     44.52                              0.250                  0.016
4634272       $267,498.69     54.00                              0.250                  0.016
4636942       $308,024.19     80.00                              0.250                  0.016
4637290       $245,231.13     94.99                              0.250                  0.016
4637302       $255,356.85     89.82                   06         0.250                  0.016
4637432       $267,173.74     93.34                   01         0.250                  0.016
4640605       $259,828.68     90.00                   12         0.250                  0.016
4640838       $299,186.76     74.63                              0.250                  0.016
4641088       $270,086.88     95.00                   13         0.250                  0.016
4645264       $440,375.47     90.00                   06         0.250                  0.016
4647695       $251,643.13     80.00                              0.250                  0.016
4647696       $404,354.81     80.00                              0.250                  0.016
4647757       $295,424.62     79.72                              0.250                  0.016
4649019       $354,164.16     72.90                              0.250                  0.016
4649310       $341,382.17     80.59                              0.250                  0.016
4651688       $227,526.17     80.00                              0.250                  0.016
4651830       $548,725.40     78.01                              0.250                  0.016
4651851       $474,012.87     65.97                              0.250                  0.016
4652526       $271,412.70     89.99                   11         0.250                  0.016
4653503       $227,526.17     80.00                              0.250                  0.016
4654015       $264,948.24     90.00                   01         0.250                  0.016
4654033       $295,980.25     95.00                   01         0.250                  0.016
4654046       $228,547.56     73.87                              0.250                  0.016
4654051       $271,605.01     80.00                              0.250                  0.016
4654068       $578,938.41     58.00                              0.250                  0.016
4654086       $405,156.28     75.89                              0.250                  0.016
4654142       $260,484.33     82.86                   01         0.250                  0.016
4654197       $254,642.35     80.00                              0.250                  0.016
4654630       $254,474.72     90.00                   06         0.250                  0.016
4655065       $249,654.79     79.87                              0.250                  0.016
4655072       $238,947.75     75.18                              0.250                  0.016
4655610       $241,117.48     85.00                   06         0.250                  0.016
4655766       $283,794.44     51.17                              0.250                  0.016
4656224       $300,412.93     79.20                              0.250                  0.016
4656830       $274,965.16     80.00                              0.250                  0.016
4656842       $236,482.13     79.66                              0.250                  0.016
4656875       $332,651.51     89.99                   06         0.250                  0.016
4656881       $244,444.51     80.00                              0.250                  0.016
4656941       $231,705.16     90.00                   17         0.250                  0.016
4657043       $263,047.40     80.00                              0.250                  0.016
4657118       $309,753.49     80.00                              0.250                  0.016
4657642       $422,565.67     79.99                              0.250                  0.016
4657652       $243,671.47     80.00                              0.250                  0.016
4659017       $274,820.11     76.39                              0.250                  0.016
4664416       $246,159.60     77.03                              0.250                  0.016
4664424       $297,577.98     79.47                              0.250                  0.016
4664429       $259,658.68     78.79                              0.250                  0.016
4664437       $353,448.74     61.56                              0.250                  0.016
4664440       $249,814.46     80.00                              0.250                  0.016
4664458       $251,800.91     88.42                   12         0.250                  0.016
4664467       $287,592.15     65.45                              0.250                  0.016
4664478       $242,105.26     80.00                              0.250                  0.016
4664492       $267,629.91     80.00                              0.250                  0.016
4664500       $260,097.73     32.35                              0.250                  0.016
4664531       $273,231.64     79.30                              0.250                  0.016
4664544       $234,875.20     77.11                              0.250                  0.016
4664554       $276,298.19     77.94                              0.250                  0.016
4664574       $434,253.68     75.00                              0.250                  0.016
4664588       $235,417.89     80.00                              0.250                  0.016
4664598       $259,825.54     61.61                              0.250                  0.016
4664609       $235,690.19     55.28                              0.250                  0.016
4664614       $555,192.62     80.00                              0.250                  0.016
4664618       $345,584.12     66.63                              0.250                  0.016
4664635       $251,624.77     80.00                              0.250                  0.016
4664655       $263,226.72     80.00                              0.250                  0.016
4664674       $479,337.17     80.00                              0.250                  0.016
4664788       $243,679.30     80.00                              0.250                  0.016
4664789       $303,080.89     79.87                              0.250                  0.016
4664791       $321,976.79     78.63                              0.250                  0.016
4664792       $244,596.95     79.55                              0.250                  0.016
4664797       $372,984.24     90.00                              0.250                  0.016
4664803       $285,584.67     79.44                              0.250                  0.016
4664817       $249,322.29     78.13                              0.250                  0.016
4664820       $275,609.16     80.00                              0.250                  0.016
4664825       $244,585.44     47.48                              0.250                  0.016
4664826       $319,166.46     79.01                              0.250                  0.016
4664830       $248,756.01     94.98                   06         0.250                  0.016
4664836       $519,263.61     79.39                              0.250                  0.016
4664840       $246,538.55     74.85                              0.250                  0.016
4664885       $268,069.29     81.52                              0.250                  0.016
4664961       $252,641.73     73.33                              0.250                  0.016
4664998       $230,972.43     90.00                   12         0.250                  0.016
4665004       $332,551.63     66.60                              0.250                  0.016
4665010       $306,565.24     76.75                              0.250                  0.016
4665083       $259,640.95     80.00                              0.250                  0.016
4665120       $301,572.34     67.11                              0.250                  0.016
4665132       $263,610.29     80.00                              0.250                  0.016
4665145       $229,682.40     43.81                              0.250                  0.016
4665150       $496,666.52     54.02                              0.250                  0.016
4665187       $265,593.94     70.00                              0.250                  0.016
4665692       $361,973.59     63.04                              0.250                  0.016
4665701       $349,726.96     34.81                              0.250                  0.016
4665719       $229,134.75     80.00                              0.250                  0.016
4665726       $299,575.15     80.00                              0.250                  0.016
4665751       $292,106.17     84.05                   12         0.250                  0.016
4665755       $349,478.86     62.50                              0.250                  0.016
4665773       $436,191.90     77.31                              0.250                  0.016
4665788       $255,214.52     95.00                   06         0.250                  0.016
4665795       $243,740.38     80.00                              0.250                  0.016
4665817       $324,576.47     80.00                              0.250                  0.016
4665827       $374,495.08     70.75                              0.250                  0.016
4665835       $279,641.67     94.92                   06         0.250                  0.016
4665843       $335,524.17     78.50                              0.250                  0.016
4665850       $279,872.67     95.00                   12         0.250                  0.016
4665860       $242,672.81     89.34                   11         0.250                  0.016
4665863       $353,511.16     66.17                              0.250                  0.016
4665870       $336,622.61     74.91                              0.250                  0.016
4666054       $312,901.18     73.79                              0.250                  0.016
4666055       $233,577.00     83.54                              0.250                  0.016
4666057       $249,962.98     93.75                   12         0.250                  0.016
4666060       $263,626.14     89.49                   06         0.250                  0.016
4666064       $237,586.77     79.32                              0.250                  0.016
4666066       $351,002.22     79.89                              0.250                  0.016
4666068       $577,830.00     79.45                              0.250                  0.016
4666069       $234,788.27     75.81                              0.250                  0.016
4666072       $316,564.88     90.00                              0.250                  0.016
4666074       $239,660.13     80.00                              0.250                  0.016
4666075       $230,680.99     70.00                              0.250                  0.016
4666084       $253,902.04     78.25                              0.250                  0.016
4666362       $361,846.83     79.99                              0.250                  0.016
4666407       $265,124.03     85.65                   11         0.250                  0.016
4666419       $228,456.32     64.79                              0.250                  0.016
4666427       $298,607.49     69.53                              0.250                  0.016
4666437       $296,805.72     90.00                   01         0.250                  0.016
4666448       $252,311.08     79.96                              0.250                  0.016
4666461       $299,788.27     60.19                              0.250                  0.016
4666470       $385,465.96     70.83                              0.250                  0.016
4666473       $390,063.39     80.00                              0.250                  0.016
4666490       $310,072.31     61.73                              0.250                  0.016
4666492       $262,608.40     77.35                              0.250                  0.016
4666496       $459,641.15     69.38                              0.250                  0.016
4666497       $469,334.41     59.64                              0.250                  0.016
4666502       $399,433.54     76.63                              0.250                  0.016
4666504       $599,084.09     53.33                              0.250                  0.016
4666512       $459,297.79     80.00                              0.250                  0.016
4666516       $399,419.16     67.80                              0.250                  0.016
4666524       $249,663.38     79.37                              0.250                  0.016
4667634       $566,611.90     80.00                              0.250                  0.016
4667651       $264,615.19     66.25                              0.250                  0.016
4667930       $265,812.26     93.99                   06         0.250                  0.016
4679468       $273,796.98     92.79                   11         0.250                  0.016

            $43,867,957.28
</TABLE>


<PAGE>
NASCOR
NMI / 1997-21 Exhibit F-3 (Part B)
20 & 30 YEAR FIXED RATE NON RELOCATION LOANS


MORTGAGE                                                      NMI
 LOAN                                                        LOAN
NUMBER               SERVICER                              SELLER
- ------               --------                              ------

4633833    FIRST BANK NATIONAL ASSOC.              FIRST BANK NATIONAL ASSOC.
4634272    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4636942    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4637290    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4637302    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4637432    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4640605    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4640838    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4641088    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4645264    NATIONAL CITY MORTGAGE CO.              NATIONAL CITY MORTGAGE CO.
4647695    FIRST BANK NATIONAL ASSOC.              FIRST BANK NATIONAL ASSOC.
4647696    FIRST BANK NATIONAL ASSOC.              FIRST BANK NATIONAL ASSOC.
4647757    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4649019    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4649310    HUNTINGTON MORTGAGE COMPANY             HUNTINGTON MORTGAGE COMPANY
4651688    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4651830    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4651851    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4652526    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4653503    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654015    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654033    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654046    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654051    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654068    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654086    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654142    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654197    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4654630    FARMERS STATE BANK & TRUST C            FARMERS STATE BANK & TRUST C
4655065    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4655072    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4655610    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4655766    HUNTINGTON MORTGAGE COMPANY             HUNTINGTON MORTGAGE COMPANY
4656224    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4656830    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4656842    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4656875    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4656881    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4656941    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4657043    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4657118    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4657642    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4657652    FT MORTGAGE COMPANIES                   FT MORTGAGE COMPANIES
4659017    HUNTINGTON MORTGAGE COMPANY             HUNTINGTON MORTGAGE COMPANY
4664416    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664424    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664429    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664437    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664440    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664458    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664467    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664478    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664492    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664500    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664531    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664544    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664554    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664574    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664588    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664598    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664609    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664614    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664618    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664635    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664655    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664674    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664788    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664789    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664791    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664792    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664797    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664803    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664817    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664820    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664825    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664826    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664830    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664836    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664840    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664885    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664961    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4664998    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665004    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665010    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665083    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665120    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665132    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665145    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665150    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665187    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665692    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665701    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665719    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665726    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665751    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665755    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665773    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665788    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665795    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665817    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665827    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665835    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665843    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665850    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665860    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665863    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4665870    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666054    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666055    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4666057    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666060    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666064    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4666066    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666068    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666069    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666072    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666074    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666075    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666084    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666362    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666407    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.
4666419    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666427    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666437    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666448    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666461    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666470    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666473    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666490    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666492    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666496    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666497    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666502    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666504    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666512    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666516    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4666524    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4667634    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4667651    FIRST UNION MORTGAGE CORP.              FIRST UNION MORTGAGE CORP.
4667930    FARMERS STATE BANK & TRUST C            FARMERS STATE BANK & TRUST C
4679468    SUNTRUST MORTGAGE, INC.                 SUNTRUST MORTGAGE, INC.


COUNT:                                         141
WAC:                                             7.826749483
WAM:                                           355.6437794
WALTV:                                          75.99028319

<PAGE>

                                    EXHIBIT G


                               REQUEST FOR RELEASE
                       (for Trust Administrator/Custodian)


Loan Information

         Name of Mortgagor:               _____________________________

         Servicer
         Loan No.:                        _____________________________

Custodian/Trust Administrator

         Name:                            _____________________________

         Address:                         _____________________________

                                          -----------------------------
         Custodian/Trust Administrator
         Mortgage File No.:               _____________________________

Seller

         Name:                            _____________________________

         Address:                         _____________________________

                                          -----------------------------

         Certificates:                    Mortgage Pass-Through Certificates,
                                          Series 1997-21


     The undersigned  Master Servicer hereby  acknowledges  that it has received
from First  Union  National  Bank,  as Trust  Administrator  for the  Holders of
Mortgage  Pass-Through  Certificates,  Series 1997-21, the documents referred to
below (the  "Documents").  All capitalized  terms not otherwise  defined in this
Request  for  Release  shall have the  meanings  given them in the  Pooling  and
Servicing  Agreement  dated as of December 23, 1997 (the  "Pooling and Servicing
Agreement") among the Trust  Administrator,  the Seller, the Master Servicer and
United States Trust Company of New York, as Trustee.

     ( ) Promissory Note dated ______________,  199__, in the original principal
sum of $___________,  made by  ____________________,  payable to, or endorsed to
the order of, the Trustee.

     (  )  Mortgage   recorded  on   _____________________   as  instrument  no.
______________   in   the   County   Recorder's   Office   of  the   County   of
____________________,   State  of  _______________________  in  book/reel/docket
____________________ of official records at page/image ____________.

     ( ) Deed of  Trust  recorded  on  ____________________  as  instrument  no.
_________________   in  the   County   Recorder's   Office  of  the   County  of
___________________,    State   of    _________________    in   book/reel/docket
____________________ of official records at page/image ____________.

     ( )  Assignment  of Mortgage or Deed of Trust to the  Trustee,  recorded on
______________________________  as instrument no.  ______________  in the County
Recorder's   Office   of  the   County  of   ______________________,   State  of
_____________________  in  book/reel/docket   ____________________  of  official
records at page/image ____________.

     ( )  Other  documents,  including  any  amendments,  assignments  or  other
assumptions of the Mortgage Note or Mortgage.

     ( ) ---------------------------------------------

     ( ) ---------------------------------------------

     ( ) ---------------------------------------------

     ( ) ---------------------------------------------

     The undersigned Master Servicer hereby acknowledges and agrees as follows:

     (1) The Master  Servicer shall hold and retain  possession of the Documents
in trust for the benefit of the Trustee, solely for the purposes provided in the
Agreement.

     (2) The Master  Servicer  shall not cause or permit the Documents to become
subject to, or encumbered  by, any claim,  liens,  security  interest,  charges,
writs of attachment or other impositions nor shall the Master Servicer assert or
seek to assert any claims or rights of setoff to or against the Documents or any
proceeds thereof.

     (3)  The  Master   Servicer   shall  return  the  Documents  to  the  Trust
Administrator when the need therefor no longer exists,  unless the Mortgage Loan
relating to the Documents has been liquidated and the proceeds thereof have been
remitted  to the  Certificate  Account and except as  expressly  provided in the
Agreement.

     (4) The  Documents  and any  proceeds  thereof,  including  any proceeds of
proceeds,  coming into the possession or control of the Master Servicer shall at
all times be earmarked for the account of the Trust Administrator,  on behalf of
the Trustee,  and the Master  Servicer shall keep the Documents and any proceeds
separate  and  distinct  from  all  other  property  in  the  Master  Servicer's
possession, custody or control.

                                  NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION

                                  By:  __________________________

                                  Title: ________________________
Date: ________________, 19__


<PAGE>

                                    EXHIBIT H

AFFIDAVIT  PURSUANT TO SECTION  860E(e)(4) OF THE INTERNAL REVENUE CODE OF 1986,
AS AMENDED, AND FOR NON-ERISA INVESTORS

STATE OF                   )
                           ) ss:
COUNTY OF                  )

     [NAME OF OFFICER], being first duly sworn, deposes and says:

     1. That he is [Title of Officer] of [Name of Purchaser] (the  "Purchaser"),
a [description  of type of entity] duly organized and existing under the laws of
the [State of ] [United States], on behalf of which he makes this affidavit.

     2. That the Purchaser's Taxpayer Identification Number is [ ].

     3. That the  Purchaser  is not a  "disqualified  organization"  within  the
meaning of Section  860E(e)(5),of  the Internal Revenue Code of 1986, as amended
(the "Code"),  or an ERISA  Prohibited  Holder,  and will not be a "disqualified
organization" or an ERISA Prohibited Holder, as of [date of transfer],  and that
the Purchaser is not acquiring  Norwest Asset  Securities  Corporation  Mortgage
Pass-Through Certificates, Series 1997-21, Class A-R Certificate (the "Class A-R
Certificate") for the account of, or as agent (including a broker,  nominee,  or
other  middleman)  for,  any person or entity from which it has not  received an
affidavit  substantially  in the form of this affidavit.  For these purposes,  a
"disqualified  organization"  means the United  States,  any state or  political
subdivision thereof, any foreign government, any international organization, any
agency or instrumentality of any of the foregoing (other than an instrumentality
if all of its  activities  are  subject  to tax and a  majority  of its board of
directors  is  not  selected  by  such  governmental  entity),  any  cooperative
organization  furnishing  electric  energy or  providing  telephone  service  to
persons  in rural  areas as  described  in Code  Section  1381(a)(2)(C),  or any
organization (other than a farmers'  cooperative  described in Code Section 521)
that is exempt from taxation under the Code unless such  organization is subject
to the tax on unrelated  business  income imposed by Code Section 511. For these
purposes, an "ERISA Prohibited Holder" means an employee benefit plan subject to
the fiduciary provisions of the Employee Retirement Income Security Act of 1974,
as amended  ("ERISA"),  and/or Code Section 4975 or any  governmental  plan,  as
defined in Section  3(32) of ERISA,  subject to any federal,  state or local law
which is, to a material extent,  similar to the foregoing provisions of ERISA or
the Code  (collectively,  a "Plan") or a Person acting on behalf of or investing
the assets of such a Plan.

     4. That the Purchaser historically has paid its debts as they have come due
and  intends to pay its debts as they come due in the  future and the  Purchaser
intends to pay taxes  associated  with holding the Class A-R Certificate as they
become due.

     5. That the Purchaser  understands  that it may incur tax liabilities  with
respect to the Class A-R  Certificate  in excess of cash flows  generated by the
Class A-R Certificate.

     6. That the Purchaser  will not transfer the Class A-R  Certificate  to any
person  or entity  from  which  the  Purchaser  has not  received  an  affidavit
substantially  in the form of this  affidavit  and as to which the Purchaser has
actual  knowledge that the  requirements set forth in paragraph 3, 4 or 7 hereof
are not  satisfied or that the Purchaser has reason to know does not satisfy the
requirements set forth in paragraph 4 hereof.

     7. That the Purchaser (i) is a U.S. Person or (ii) is a person other than a
U.S.  Person (a  "Non-U.S.  Person")  that  holds the Class A-R  Certificate  in
connection  with the conduct of a trade or business within the United States and
has  furnished  the  transferor  and the Trust  Administrator  with an effective
Internal  Revenue  Service  Form 4224 or  successor  form at the time and in the
manner required by the Code or (iii) is a Non-U.S.  Person that has delivered to
both the  transferor  and the Trust  Administrator  an opinion  of a  nationally
recognized  tax  counsel  to the  effect  that the  transfer  of the  Class  A-R
Certificate  to it is in accordance  with the  requirements  of the Code and the
regulations  promulgated  thereunder  and that  such  transfer  of the Class A-R
Certificate  will not be  disregarded  for federal  income tax  purposes.  "U.S.
Person"  means a citizen  or  resident  of the  United  States,  a  corporation,
partnership (except to the extent provided in applicable  Treasury  regulations)
or other entity  created or organized in or under the laws of the United  States
or any political  subdivision thereof, an estate that is subject to U.S. federal
income tax  regardless  of the source of its income or a trust if a court within
the  United   States  is  able  to  exercise   primary   supervision   over  the
administration  of such  trust,  and one or more  such  U.S.  Persons  have  the
authority to control all substantial  decisions of such trust (or, to the extent
provided in  applicable  Treasury  regulations,  certain  trusts in existence on
August 20, 1996 which are eligible to elect to be treated as U.S. Persons).

     8.  That  the  Purchaser  agrees  to such  amendments  of the  Pooling  and
Servicing Agreement as may be required to further effectuate the restrictions on
transfer of the Class A-R Certificate to such a "disqualified  organization," an
agent thereof,  an ERISA Prohibited Holder or a person that does not satisfy the
requirements of paragraph 4, paragraph 5 and paragraph 7 hereof.

     9. That the Purchaser consents to the designation of the Master Servicer as
its agent to act as "tax matters  person" of the REMIC  pursuant to Section 3.01
of the Pooling and Servicing Agreement, and if such designation is not permitted
by the Code and applicable  law, to act as tax matters person if requested to do
so.



<PAGE>



     IN WITNESS WHEREOF, the Purchaser has caused this instrument to be executed
on its behalf, pursuant to authority of its Board of Directors, by its [Title of
Officer] this ___ day of , 19 __.

                                                    [NAME OF PURCHASER]


                                                  By:__________________________
                                                     [Name of Officer]
                                                     [Title of Officer]


     Personally  appeared before me the above-named [Name of Officer],  known or
proved to me to be the same person who executed the foregoing  instrument and to
be the [Title of Officer],  of the  Purchaser,  and  acknowledged  to me that he
[she] executed the same as his [her] free act and deed and the free act and deed
of the Purchaser.


             Subscribed and sworn before me this __ day of , 19 __.

- -----------------------------
NOTARY PUBLIC

COUNTY OF____________________

STATE OF_____________________

My commission expires the __ day of __________, 19__.


<PAGE>






                                    EXHIBIT I





                [Letter from Transferor of Class A-R Certificate]





                                     [Date]




First Union National Bank
230 South Tryon Street
Charlotte, North Carolina  28288

                  Re:      Norwest Asset Securities Corporation,
                           Series 1997-21, Class A-R

Ladies and Gentlemen:
                  
     [Transferor] has reviewed the attached  affidavit of [Transferee],  and has
no actual  knowledge  that such  affidavit is not true and has no reason to know
that the  information  contained in paragraph 4 thereof is not true.  Very truly
yours, [Transferor]

                             ----------------------



<PAGE>

                                    EXHIBIT J





                      NORWEST ASSET SECURITIES CORPORATION


                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1997-21
                 CLASS [A-PO][A-WIO][B-3][B-4][B-5] CERTIFICATES


                               TRANSFEREE'S LETTER



                           ----------------- --, ----

First Union National Bank
230 South Tryon Street
Charlotte, North Carolina  28288


Norwest Asset Securities Corporation
7485 New Horizon Way
Frederick, Maryland 21703

     The  undersigned  (the  "Purchaser")  proposes  to purchase  Norwest  Asset
Securities Corporation Mortgage Pass-Through Certificates, Series 1997-21, Class
[A-PO][A-WIO][B-3][B-4][B-5]          Certificates          (the          "Class
[A-PO][A-WIO][B-3][B-4][B-5]   Certificates")   in  the   principal   amount  of
$___________.  In doing so,  the  Purchaser  hereby  acknowledges  and agrees as
follows:

     Section 1. Definitions. Each capitalized term used herein and not otherwise
defined  herein  shall  have  the  meaning  ascribed  to it in the  Pooling  and
Servicing  Agreement,  dated as of December 23, 1997 (the "Pooling and Servicing
Agreement") among Norwest Asset Securities  Corporation,  as seller  ("NASCOR"),
Norwest Bank Minnesota,  National  Association,  as master servicer (the "Master
Servicer"),  First  Union  National  Bank,  as trust  administrator  (the "Trust
Administrator")  and United  States Trust  Company of New York,  as trustee (the
"Trustee"),  of  Norwest  Asset  Securities  Corporation  Mortgage  Pass-Through
Certificates, Series 1997-21.

     Section 2.  Representations and Warranties of the Purchaser.  In connection
with the proposed transfer, the Purchaser represents and warrants to NASCOR, the
Master Servicer and the Trust Administrator that:

               (a) The Purchaser is duly organized, validly existing and in good
          standing under the laws of the  jurisdiction in which the Purchaser is
          organized,     is     authorized    to    invest    in    the    Class
          [A-PO][A-WIO][B-3][B-4][B-5]  Certificates,  and to  enter  into  this
          Agreement, and duly executed and delivered this Agreement.

               (b)     The      Purchaser     is     acquiring     the     Class
          [A-PO][A-WIO][B-3][B-4][B-5]  Certificates  for  its  own  account  as
          principal and not with a view to the distribution thereof, in whole or
          in part.

               [(c) The  Purchaser  has  knowledge  of  financial  and  business
          matters  and is  capable  of  evaluating  the  merits  and risks of an
          investment in the Class [A-PO][A-WIO][B-3][B-4][B-5] Certificates; the
          Purchaser has sought such  accounting,  legal and tax advice as it has
          considered necessary to make an informed investment decision;  and the
          Purchaser is able to bear the economic  risk of an  investment  in the
          Class  [A-PO][A-WIO][B-3][B-4][B-5]  Certificates  and  can  afford  a
          complete loss of such investment.]

               [(c) The  Purchaser is a "Qualified  Institutional  Buyer" within
          the meaning of Rule 144A of the Act.]

               (d) The Purchaser  confirms that (a) it has received and reviewed
          a copy  of  the  Private  Placement  Memorandum  dated  _____________,
          _______,   relating   to   the   Class    [A-PO][A-WIO][B-3][B-4][B-5]
          Certificates and reviewed,  to the extent it deemed  appropriate,  the
          documents attached thereto or incorporated by reference  therein,  (b)
          it has had the  opportunity  to ask questions of, and receive  answers
          from   NASCOR   concerning   the  Class   [A-PO][A-WIO][B-3][B-4][B-5]
          Certificates  and  all  matters  relating  thereto,   and  obtain  any
          additional  information (including documents) relevant to its decision
          to purchase the Class  [A-PO][A-WIO][B-3][B-4][B-5]  Certificates that
          NASCOR possesses or can possess without unreasonable effort or expense
          and  (c)  it  has  undertaken  its  own  independent  analysis  of the
          investment in the Class [A-PO][A-WIO][B-3][B-4][B-5] Certificates. The
          Purchaser  will not use or  disclose  any  information  it receives in
          connection with its purchase of the Class [A-PO][A-WIO][B-3][B-4][B-5]
          Certificates  other than in connection with a subsequent sale of Class
          [A-PO][A-WIO][B-3][B-4][B-5] Certificates.

               (e) Either (i) the  Purchaser is not an employee  benefit plan or
          other  retirement  arrangement  subject  to  Title  I of the  Employee
          Retirement  Income  Security Act of 1974,  as amended,  ("ERISA"),  or
          Section  4975 of the Internal  Revenue  Code of 1986,  as amended (the
          "Code"), or a governmental plan, as defined in Section 3(32) of ERISA,
          subject to any federal,  state or local law ("Similar  Law") which is,
          to a material extent,  similar to the foregoing provisions of ERISA or
          the Code  (collectively,  a  "Plan"),  an agent  acting on behalf of a
          Plan,  or a person  utilizing  the assets of a Plan or (ii) [for Class
          [B-3][B-4][B-5]  Certificates  only] if the  Purchaser is an insurance
          company,   the   source   of  funds   used  to   purchase   the  Class
          [B-3][B-4][B-5]  Certificate is an "insurance company general account"
          (as such term is  defined in Section  V(e) of  Prohibited  Transaction
          Class  Exemption  95-60 ("PTE  95-60"),  60 Fed. Reg.  35925 (July 12,
          1995) and there is no Plan with  respect  to which the  amount of such
          general account's reserves and liabilities for the contract(s) held by
          or on behalf of such Plan and all other Plans  maintained  by the same
          employer (or  affiliate  thereof as defined in Section  V(a)(1) of PTE
          95-60) or by the same employee  organization  exceeds 10% of the total
          of all  reserves  and  liabilities  of such  general  account (as such
          amounts are determined under Section I(a) of PTE 95-60) at the date of
          acquisition  or (iii) the  Purchaser  has provided (a) a "Benefit Plan
          Opinion"  satisfactory  to NASCOR and the Trust  Administrator  of the
          Trust  Estate  and (b)  such  other  opinions  of  counsel,  officers'
          certificates  and agreements as NASCOR or the Master Servicer may have
          required.  A Benefit  Plan  Opinion  is an  opinion  of counsel to the
          effect  that the  proposed  transfer  will not cause the assets of the
          Trust  Estate to be  regarded  as "plan  assets"  and  subject  to the
          prohibited  transaction  provisions of ERISA,  the Code or Similar Law
          and will not subject the Trust Administrator,  the Trustee, the Seller
          or the  Master  Servicer  to  any  obligation  in  addition  to  those
          undertaken  in the  Pooling and  Servicing  Agreement  (including  any
          liability  for civil  penalties  or excise taxes  imposed  pursuant to
          ERISA, Section 4975 of the Code or Similar Law).

               (f) If the Purchaser is a depository  institution  subject to the
          jurisdiction of the Office of the Comptroller of the Currency ("OCC"),
          the Board of  Governors of the Federal  Reserve  System  ("FRB"),  the
          Federal Deposit Insurance Corporation  ("FDIC"),  the Office of Thrift
          Supervision  ("OTS")  or  the  National  Credit  Union  Administration
          ("NCUA"), the Purchaser has reviewed the "Supervisory Policy Statement
          on  Securities  Activities"  dated  January  28,  1992 of the  Federal
          Financial  Institutions  Examination  Council  and the April 15,  1994
          Interim  Revision  thereto as adopted by the OCC, FRB,  FDIC,  OTS and
          NCUA  (with  modifications  as  applicable),  as  appropriate,   other
          applicable  investment  authority,  rules,  supervisory  policies  and
          guidelines  of these  agencies and, to the extent  appropriate,  state
          banking  authorities  and has concluded that its purchase of the Class
          [A-WIO][B-3][B-4][B-5] Certificates is in compliance therewith.

     Section 3. Transfer of Class [A-PO][A-WIO][B-3][B-4][B-5] Certificates.

               (a)    The     Purchaser     understands     that    the    Class
          [A-PO][A-WIO][B-3][B-4][B-5]  Certificates  have not  been  registered
          under the Securities  Act of 1933 (the "Act") or any state  securities
          laws  and   that  no   transfer   may  be  made   unless   the   Class
          [A-PO][A-WIO][B-3][B-4][B-5] Certificates are registered under the Act
          and applicable  state law or unless an exemption from  registration is
          available.  The Purchaser further understands that neither NASCOR, the
          Master Servicer nor the Trust Administrator is under any obligation to
          register the Class  [A-PO][A-WIO][B-3][B-4][B-5]  Certificates or make
          an  exemption  available.  In the event that such a transfer  is to be
          made in reliance upon an exemption  from the Act or  applicable  state
          securities laws, (i) the Trust  Administrator  shall require, in order
          to assure  compliance  with such  laws,  that the  Certificateholder's
          prospective  transferee certify to NASCOR and the Trust  Administrator
          as  to  the  factual  basis  for  the  registration  or  qualification
          exemption  relied upon, and (ii) unless the transferee is a "Qualified
          Institutional  Buyer"  within the meaning of Rule 144A of the Act, the
          Trust  Administrator  or NASCOR may,  if such  transfer is made within
          three  years  from the later of (a) the  Closing  Date or (b) the last
          date on which  NASCOR  or any  affiliate  thereof  was a holder of the
          Certificates proposed to be transferred, require an Opinion of Counsel
          that such transfer may be made  pursuant to an exemption  from the Act
          and state  securities  laws,  which Opinion of Counsel shall not be an
          expense of the Trust Administrator, the Master Servicer or NASCOR. Any
          such  Certificateholder  desiring to effect such transfer  shall,  and
          does hereby agree to, indemnify the Trustee,  the Trust Administrator,
          the Master  Servicer,  any Paying  Agent acting on behalf of the Trust
          Administrator  and NASCOR against any liability that may result if the
          transfer  is not so  exempt  or is not made in  accordance  with  such
          federal and state laws.

               (b)  No   transfer   of  a   Class   [A-PO][A-WIO][B-3][B-4][B-5]
          Certificate  shall be made unless the transferee  provides  NASCOR and
          the Trust Administrator with a Transferee's  Letter,  substantially in
          the form of this Agreement.

               (c)    The    Purchaser     acknowledges     that    its    Class
          [A-PO][A-WIO][B-3][B-4][B-5]  Certificates bear a legend setting forth
          the applicable restrictions on transfer.



<PAGE>



     IN WITNESS WHEREOF, the undersigned has caused this Agreement to be validly
executed by its duly authorized  representative as of the day and the year first
above written.

                            [PURCHASER]



                            By:  ______________________________

                            Its:  ______________________________


<PAGE>

                                    EXHIBIT K






                      NORWEST ASSET SECURITIES CORPORATION


                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1997-21
                       CLASS [M] [B-1] [B-2] CERTIFICATES


                               TRANSFEREE'S LETTER




                            ---------------- --, ----

First Union National Bank
230 South Tryon Street
Charlotte, North Carolina  28288


Norwest Asset Securities Corporation
7485 New Horizon Way
Frederick, Maryland 21703

     The  undersigned  (the  "Purchaser")  proposes  to purchase  Norwest  Asset
Securities Corporation Mortgage Pass-Through Certificates, Series 1997-21, Class
[M] [B-1] [B-2]  Certificates (the "Class [M] [B-1] [B-2]  Certificates") in the
principal amount of $___________. In doing so, the Purchaser hereby acknowledges
and agrees as follows:

     Section 1. Definitions. Each capitalized term used herein and not otherwise
defined  herein  shall  have  the  meaning  ascribed  to it in the  Pooling  and
Servicing  Agreement,  dated as of December 23, 1997 (the "Pooling and Servicing
Agreement") among Norwest Asset Securities  Corporation,  as seller  ("NASCOR"),
Norwest Bank Minnesota,  National  Association,  as master servicer (the "Master
Servicer"),  First  Union  National  Bank,  as trust  administrator  (the "Trust
Administrator"),  and United  States Trust  Company of New York, as trustee (the
"Trustee")  of  Norwest  Asset  Securities   Corporation  Mortgage  Pass-Through
Certificates, Series 1997-21.

     Section 2.  Representations and Warranties of the Purchaser.  In connection
with the proposed transfer, the Purchaser represents and warrants to the NASCOR,
the Master Servicer and the Trust Administrator that:

               Either (i) the Purchaser is not an employee benefit plan or other
          retirement  arrangement  subject to Title I of the Employee Retirement
          Income Security Act of 1974, as amended, ("ERISA"), or Section 4975 of
          the Internal  Revenue  Code of 1986,  as amended  (the  "Code"),  or a
          governmental  plan, as defined in Section  3(32) of ERISA,  subject to
          any  federal,  state or local  law  ("Similar  Law")  which  is,  to a
          material extent,  similar to the foregoing  provisions of ERISA or the
          Code (collectively, a "Plan"), an agent acting on behalf of a Plan, or
          a person utilizing the assets of a Plan or (ii) if the Purchaser is an
          insurance company,  the source of funds used to purchase the Class [M]
          [B-1] [B-2] Certificate is an "insurance  company general account" (as
          such term is defined in Section V(e) of Prohibited  Transaction  Class
          Exemption 95-60 ("PTE 95-60"),  60 Fed. Reg. 35925 (July 12, 1995) and
          there is no Plan  with  respect  to which the  amount of such  general
          account's  reserves and liabilities for the contract(s)  held by or on
          behalf  of such  Plan  and all  other  Plans  maintained  by the  same
          employer (or  affiliate  thereof as defined in Section  V(a)(1) of PTE
          95-60) or by the same employee  organization,  exceed 10% of the total
          of all  reserves  and  liabilities  of such  general  account (as such
          amounts are determined under Section I(a) of PTE 95-60) at the date of
          acquisition  or (iii) the  Purchaser  has provided (a) a "Benefit Plan
          Opinion"  satisfactory  to NASCOR and the Trust  Administrator  of the
          Trust  Estate  and (b)  such  other  opinions  of  counsel,  officers'
          certificates  and agreements as NASCOR or the Master Servicer may have
          required.  A Benefit  Plan  Opinion  is an  opinion  of counsel to the
          effect  that the  proposed  transfer  will not cause the assets of the
          Trust  Estate to be  regarded  as "plan  assets"  and  subject  to the
          prohibited  transaction  provisions of ERISA,  the Code or Similar Law
          and will not subject the Trust Administrator,  the Trustee, the Seller
          or the  Master  Servicer  to  any  obligation  in  addition  to  those
          undertaken  in the  Pooling and  Servicing  Agreement  (including  any
          liability  for civil  penalties  or excise taxes  imposed  pursuant to
          ERISA, Section 4975 of the Code or Similar Law).

         IN WITNESS  WHEREOF,  the  undersigned  has caused this Agreement to be
validly  executed by its duly  authorized  representative  as of the day and the
year first above written.

                      [PURCHASER]



                      By:  _____________________________

                      Its: _____________________________

                      [Reserved]


<PAGE>


                     

                                    EXHIBIT L


                   Norwest Mortgage, Inc. Servicing Agreement

              First Union Mortgage Corporation Servicing Agreement

                 Farmers State Bank & Trust Servicing Agreement

                   Suntrust Mortgage, Inc. Servicing Agreement

               The Huntington Mortgage Company Servicing Agreement

               First Bank National Association Servicing Agreement

                    FT Mortgage Companies Servicing Agreement

               National City Mortgage Company Servicing Agreement




<PAGE>



                                    EXHIBIT M
                      [FORM OF SPECIAL SERVICING AGREEMENT]

                 SPECIAL SERVICING AND COLLATERAL FUND AGREEMENT

     This SPECIAL  SERVICING AND COLLATERAL FUND AGREEMENT (the  "Agreement") is
made  and  entered  into  as  of ,  between  Norwest  Bank  Minnesota,  National
Association (the "Company" and "Norwest Bank") and (the "Purchaser").

                              PRELIMINARY STATEMENT

     is  the  holder  of  the  entire  interest  in  Norwest  Asset   Securities
Corporation Mortgage Pass-Through Certificates,  Series 1997-21, Class ____ (the
"Class B  Certificates").  The Class B  Certificates  were issued  pursuant to a
Pooling and  Servicing  Agreement  dated as of December  23, 1997 among  Norwest
Asset  Securities  Corporation,  as Seller  ("NASCOR"),  Norwest Bank Minnesota,
National  Association,  as Master  Servicer and First Union  National  Bank,  as
Trustee.

     intends to resell all of the Class B Certificates directly to the Purchaser
on or promptly after the date hereof.

     In  connection  with such sale,  the  parties  hereto  have agreed that the
Company will cause, to the extent that the Company as Master Servicer is granted
such authority in the related Servicing Agreements,  the related servicers (each
a related "Servicer"), which service the Mortgage Loans which comprise the Trust
Estate  related  to the above  referenced  series  under the  related  servicing
agreements (each a related "Servicing Agreement"),  to engage in certain special
servicing  procedures relating to foreclosures for the benefit of the Purchaser,
and that the  Purchaser  will deposit  funds in a  collateral  fund to cover any
losses  attributable  to such  procedures  as well as all  advances and costs in
connection therewith, as set forth herein.

     In consideration of the mutual agreements herein contained, the receipt and
sufficiency  of which are hereby  acknowledged,  the Company  and the  Purchaser
agree that the following  provisions shall become effective and shall be binding
on and enforceable by the Company and the Purchaser:



                                    ARTICLE I

                                   DEFINITIONS

     Section 1.01 Defined Terms

     Whenever used in this Agreement,  the following  words and phrases,  unless
the context otherwise requires, shall have the following meanings:

     Business  Day:  Any day other than (i) a Saturday or a Sunday or (ii) a day
on  which  banking  institutions  in the  State  of New  York  are  required  or
authorized by law or executive order to be closed.

     Collateral  Fund: The fund  established and maintained  pursuant to Section
3.01 hereof.

     Collateral  Fund  Permitted  Investments:  Either  (i)  obligations  of, or
obligations fully guaranteed as to principal and interest by, the United States,
or any agency or instrumentality  thereof,  provided such obligations are backed
by the full faith and  credit of the United  States,  (ii) a money  market  fund
rated in the highest rating  category by a nationally  recognized  rating agency
selected by the Company,  (iii) cash,  (iv) mortgage  pass-through  certificates
issued or guaranteed by Government National Mortgage Association, FNMA or FHLMC,
(v) commercial paper (including both  non-interest-bearing  discount obligations
and interest-bearing  obligations payable on demand or on a specified date), the
issuer of which may be an affiliate  of the Company,  having at the time of such
investment a rating of at least A-1 by Standard  and Poor's  ("S&P") or at least
P-1 by Moody's  Investors  Service,  Inc.  ("Moody's")  or (vi)  demand and time
deposits in,  certificates  of deposit of, any  depository  institution or trust
company (which may be an affiliate of the Company)  incorporated  under the laws
of the United States of America or any state thereof and subject to  supervision
and examination by federal and/or state banking  authorities,  so long as at the
time of such  investment  either  (x) the  long-term  debt  obligations  of such
depository institution or trust company have a rating of at least Aa2 by Moody's
or AA by S&P, (y) the certificate of deposit or other unsecured  short-term debt
obligations of such depository  institution or trust company have a rating of at
least P-1 by Moody's or A-1 by S&P or (z) the  depository  institution  or trust
company is one that is acceptable to either  Moody's or S&P and, for each of the
preceding  clauses (i), (iv),  (v) and (vi),  the maturity  thereof shall be not
later  than the  earlier  to occur of (A) 30 days  from the date of the  related
investment  and (B) the next  succeeding  Distribution  Date as  defined  in the
related Pooling and Servicing Agreement.

     Commencement of Foreclosure: The first official action required under local
law in order to commence foreclosure proceedings or to schedule a trustee's sale
under a deed of trust,  including  (i) in the case of a mortgage,  any filing or
service of process necessary to commence an action to foreclose,  or (ii) in the
case of a deed of trust, posting, the publishing, filing or delivery of a notice
of sale,  but not including in either case (x) any notice of default,  notice of
intent to  foreclose  or sell or any other  action  prerequisite  to the actions
specified  in (i) or  (ii)  above,  (y)  the  acceptance  of a  deed-in-lieu  of
foreclosure  (whether  in  connection  with a sale of the  related  property  or
otherwise) or (z) initiation and completion of a short pay-off.

     Current  Appraisal:  With  respect  to any  Mortgage  Loan as to which  the
Purchaser has made an Election to Delay Foreclosure, an appraisal of the related
Mortgaged  Property  obtained  by the  Purchaser  at its  own  expense  from  an
independent  appraiser  (which  shall  not be an  affiliate  of  the  Purchaser)
acceptable to the Company as nearly contemporaneously as practicable to the time
of  the  Purchaser's  election,   prepared  based  on  the  Company's  customary
requirements for such appraisals.

     Election to Delay  Foreclosure:  Any election by the Purchaser to delay the
Commencement of Foreclosure, made in accordance with Section 2.02(b).

     Election to  Foreclose:  Any election by the  Purchaser to proceed with the
Commencement of Foreclosure, made in accordance with Section 2.03(a).

     Monthly Advances:  Principal and interest  advances and servicing  advances
including costs and expenses of foreclosure.

     Required  Collateral  Fund  Balance:  As of any date of  determination,  an
amount equal to the aggregate of all amounts previously required to be deposited
in the Collateral  Fund pursuant to Section  2.02(d)  (after  adjustment for all
withdrawals and deposits pursuant to Section 2.02(e)) and Section 2.03(b) (after
adjustment for all  withdrawals  and deposits  pursuant to Section  2.03(c)) and
Section  3.02 to be reduced by all  withdrawals  therefrom  pursuant  to Section
2.02(g) and Section 2.03(d).

     Section 1.02 Definitions Incorporated by Reference

     All  capitalized  terms not otherwise  defined in this Agreement shall have
the meanings assigned in the Pooling and Servicing Agreement.



                                   ARTICLE II

                          SPECIAL SERVICING PROCEDURES

     Section 2.01 Reports and Notices

     (a) In connection  with the performance of its duties under the Pooling and
Servicing  Agreement  relating to the realization upon defaulted Mortgage Loans,
the Company as Master  Servicer  shall  provide to the  Purchaser  the following
notices and reports:

               (i) Within five  Business Days after each  Distribution  Date (or
          included  in or with  the  monthly  statements  to  Certificateholders
          pursuant to the Pooling and Servicing Agreement),  the Company,  shall
          provide to the  Purchaser  a report,  using the same  methodology  and
          calculations  in its standard  servicing  reports,  indicating for the
          Trust  Estate the number of Mortgage  Loans that are (A) thirty  days,
          (B)  sixty  days,  (C)  ninety  days  or  more  delinquent  or  (D) in
          foreclosure,  and  indicating  for each  such  Mortgage  Loan the loan
          number and outstanding principal balance.

               (ii) Prior to the  Commencement of Foreclosure in connection with
          any  Mortgage  Loan,  the Company  shall cause (to the extent that the
          Company as Master  Servicer is granted  such  authority in the related
          Servicing  Agreement)  the  Servicer to provide the  Purchaser  with a
          notice (sent by telecopier) of such proposed and imminent foreclosure,
          stating  the loan  number and the  aggregate  amount  owing  under the
          Mortgage  Loan.  Such notice may be provided to the  Purchaser  in the
          form of a copy of a referral  letter from such Servicer to an attorney
          requesting the institution of foreclosure.

     (b) If requested by the Purchaser, the Company shall cause the Servicer (to
the extent that the Company as Master  Servicer is granted such authority in the
related Servicing  Agreement) to make its servicing  personnel available (during
their normal business hours) to respond to reasonable inquiries,  by phone or in
writing  by  facsimile,  electronic,  or  overnight  mail  transmission,  by the
Purchaser in  connection  with any Mortgage  Loan  identified  in a report under
subsection  (a) (i) (B),  (a) (i) (C),  (a) (i) (D),  or (a) (ii) which has been
given to the Purchaser;  provided,  that (1) the related  Servicer shall only be
required to provide  information  that is readily  accessible  to its  servicing
personnel and is  non-confidential  and (2) the related  Servicer  shall respond
within five Business Days orally or in writing by facsimile transmission.

     (c) In addition to the foregoing,  the Company shall cause the Servicer (to
the extent that the Company as Master  Servicer is granted such authority in the
related Servicing Agreement) to provide to the Purchaser such information as the
Purchaser may reasonably  request  provided,  however,  that such information is
consistent with normal reporting  practices,  concerning each Mortgage Loan that
is at least ninety days  delinquent and each Mortgage Loan which has become real
estate owned, through the final liquidation thereof;  provided, that the related
Servicer  shall  only  be  required  to  provide  information  that  is  readily
accessible to its servicing personnel and is non-confidential provided, however,
that the Purchaser will  reimburse the Company and the related  Servicer for any
out of pocket expenses.

     Section 2.02 Purchaser's Election to Delay Foreclosure Proceedings

     (a) The  Purchaser  shall be deemed to direct the Company to direct (to the
extent that the  Company as Master  Servicer is granted  such  authority  in the
related  Servicing  Agreement)  the related  Servicer that in the event that the
Company does not receive written notice of the Purchaser's  election pursuant to
subsection (b) below within 24 hours (exclusive of any intervening  non-Business
Days) of  transmission  of the notice provided by the Company under Section 2.01
(a) (ii)  subject to  extension  as set forth in Section  2.02(b),  the  related
Servicer may proceed with the  Commencement  of  Foreclosure  in respect of such
Mortgage Loan in accordance with its normal foreclosure policies without further
notice  to the  Purchaser.  Any  foreclosure  that  has  been  initiated  may be
discontinued  (i) without  notice to the Purchaser if the Mortgage Loan has been
brought  current or if a refinancing  or  prepayment  occurs with respect to the
Mortgage  Loan  (including  by means of a short  payoff  approved by the related
Servicer) or (ii) if the related Servicer has reached the terms of a forbearance
agreement  with the  borrower.  In the latter  case,  the related  Servicer  may
complete such forbearance agreement unless instructed otherwise by the Purchaser
within two Business Days notification.

     (b) In  connection  with any  Mortgage  Loan with respect to which a notice
under Section  2.01(a)(ii)  has been given to the  Purchaser,  the Purchaser may
elect to instruct the Company to cause, to the extent that the Company as Master
Servicer is granted  such  authority  in the related  Servicing  Agreement,  the
related Servicer to delay the Commencement of Foreclosure until such time as the
Purchaser determines that the related Servicer may proceed with the Commencement
of  Foreclosure.  Such  election  must be evidenced by written  notice  received
within 24 hours (exclusive of any intervening non-Business Days) of transmission
of the notice  provided by the Company under Section  2.01(a)(ii).  Such 24 hour
period shall be extended for no longer than an  additional  four  Business  Days
after the  receipt  of the  information  if the  Purchaser  requests  additional
information related to such foreclosure;  provided,  however, that the Purchaser
will have at least one  Business  Day to  respond  to any  requested  additional
information.  Any such  additional  information  shall be  provided  only to the
extent  it (i) is not  confidential  in  nature  and (ii) is  obtainable  by the
related  Servicer  from  existing  reports,  certificates  or  statements  or is
otherwise readily  accessible to its servicing  personnel.  The Purchaser agrees
that it has no right to deal with the mortgagor during such period.  However, if
such servicing activities include acceptance of a deed-in-lieu of foreclosure or
short  payoff,  the  Purchaser  will be notified and given two Business  Days to
respond.

     (c) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay Foreclosure, the Purchaser shall obtain a Current Appraisal as
soon as practicable,  but in no event more than 15 business days thereafter, and
shall provide the Company with a copy of such Current Appraisal.

     (d) Within two Business  Days of making any Election to Delay  Foreclosure,
the Purchaser  shall remit by wire  transfer to the Company,  for deposit in the
Collateral  Fund, an amount,  as calculated by the Company,  equal to the sum of
(i) 125% of the greater of the unpaid principal balance of the Mortgage Loan and
the value shown in the Current  Appraisal  referred to in  subsection  (c) above
(or, if such Current Appraisal has not yet been obtained, the Company's estimate
thereof,  in which case the  required  deposit  under this  subsection  shall be
adjusted upon obtaining such Current Appraisal), and (ii) three months' interest
on the Mortgage Loan at the applicable  Mortgage  Interest Rate. If any Election
to Delay Foreclosure extends for a period in excess of three months (such excess
period  being  referred to herein as the "Excess  Period"),  within two Business
Days the  Purchaser  shall remit by wire  transfer in advance to the Company for
deposit in the Collateral Fund the amount of each additional  month's  interest,
as  calculated  by the Company,  equal to interest on the  Mortgage  Loan at the
applicable  Mortgage  Interest  Rate for the  Excess  Period.  The terms of this
Agreement  will no longer apply to the  servicing of any Mortgage  Loan upon the
failure of the  Purchaser  to deposit any of the above  amounts  relating to the
Mortgage Loan within two Business Days of the Election to Delay  Foreclosure  or
within two Business Days of the  commencement  of the Excess  Period  subject to
Section 3.01.

     (e) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay Foreclosure, the Company may withdraw from the Collateral Fund
from time to time amounts  necessary to reimburse  the related  Servicer for all
related  Monthly  Advances  and  Liquidation  Expenses  thereafter  made by such
Servicer in accordance with the Pooling and Servicing  Agreement and the related
Servicing  Agreement.  To the  extent  that the  amount of any such  Liquidation
Expenses is determined by the Company based on estimated  costs,  and the actual
costs are  subsequently  determined  to be higher,  the Company may withdraw the
additional  amount from the Collateral Fund. In the event that the Mortgage Loan
is brought current by the mortgagor and the foreclosure  action is discontinued,
the amounts so withdrawn from the Collateral Fund shall be redeposited if and to
the extent that reimbursement therefor from amounts paid by the mortgagor is not
prohibited  pursuant  to the  Pooling  and  Servicing  Agreement  or the related
Servicing  Agreement,  applicable law or the related  mortgage  note.  Except as
provided in the preceding  sentence,  amounts withdrawn from the Collateral Fund
to cover Monthly  Advances and  Liquidation  Expenses  shall not be  redeposited
therein or otherwise reimbursed to the Purchaser.  If and when any such Mortgage
Loan  is  brought  current  by  the  mortgagor,  all  amounts  remaining  in the
Collateral  Fund in respect of such  Mortgage  Loan  (after  adjustment  for all
permitted  withdrawals  and  deposits  pursuant  to this  subsection)  shall  be
released to the Purchaser.

     (f) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay  Foreclosure,  the related  Servicer shall continue to service
the Mortgage Loan in accordance  with its customary  procedures  (other than the
delay in  Commencement  of  Foreclosure  as  provided  herein).  If and when the
Purchaser shall notify the Company that it believes that it is appropriate to do
so, the related  Servicer may proceed with the  Commencement of Foreclosure.  In
any event,  if the Mortgage Loan is not brought  current by the mortgagor by the
time the loan becomes 6 months  delinquent,  the  Purchaser's  election shall no
longer be effective  and at the  Purchaser's  option,  either (i) the  Purchaser
shall  purchase  the Mortgage  Loan from the related  Trust Estate at a purchase
price equal to the fair market  value as shown on the Current  Appraisal,  to be
paid by (x) applying any balance in the Collateral Fund to such to such purchase
price, and (y) to the extent of any deficiency,  by wire transfer of immediately
available  funds from the  Purchaser  to the  Company for deposit in the related
Certificate  Account;  or (ii)  the  related  Servicer  shall  proceed  with the
Commencement of Foreclosure.

     (g) Upon the occurrence of a liquidation  with respect to any Mortgage Loan
as to which the Purchaser made an Election to Delay  Foreclosure and as to which
the  related  Servicer   proceeded  with  the  Commencement  of  Foreclosure  in
accordance with subsection (f) above, the Company shall calculate the amount, if
any, by which the value shown on the Current Appraisal obtained under subsection
(c) exceeds the actual sales price obtained for the related  Mortgaged  Property
(net of  Liquidation  Expenses  and  accrued  interest  related to the  extended
foreclosure  period),  and the Company shall  withdraw the amount of such excess
from the  Collateral  Fund,  shall remit the same to the Trust Estate and in its
capacity as Master  Servicer  shall apply such amount as additional  Liquidation
Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After  making such
withdrawal,  all amounts  remaining  in the  Collateral  Fund in respect of such
Mortgage  Loan (after  adjustment  for all  permitted  withdrawals  and deposits
pursuant to this Agreement) shall be released to the Purchaser.

     Section 2.03 Purchaser's Election to Commence Foreclosure Proceedings

     (a) In  connection  with any  Mortgage  Loan  identified  in a report under
Section 2.01(a)(i)(B), the Purchaser may elect to instruct the Company to cause,
to the extent that the Company as Master  Servicer is granted such  authority in
the  related  Servicing  Agreement,  the related  Servicer  to proceed  with the
Commencement  of  Foreclosure  as soon as  practicable.  Such  election  must be
evidenced by written notice  received by the Company by 5:00 p.m., New York City
time,  on the third  Business  Day  following  the delivery of such report under
Section 2.01(a)(i).

     (b) Within two  Business  Days of making any  Election  to  Foreclose,  the
Purchaser  shall remit to the Company,  for deposit in the  Collateral  Fund, an
amount,  as  calculated  by the  Company,  equal to 125% of the  current  unpaid
principal balance of the Mortgage Loan and three months interest on the Mortgage
Loan at the  applicable  Mortgage  Interest  Rate. If and when any such Mortgage
Loan is brought current by the mortgagor,  all amounts in the Collateral Fund in
respect of such Mortgage Loan (after  adjustment  for all permitted  withdrawals
and deposits  pursuant to this Agreement)  shall be released to the Purchaser if
and to the extent that reimbursement therefor from amounts paid by the mortgagor
is not prohibited pursuant to the Pooling and Servicing Agreement or the related
Servicing  Agreement,  applicable law or the related mortgage note. The terms of
this  Agreement  will no longer apply to the servicing of any Mortgage Loan upon
the  failure of the  Purchaser  to deposit  the above  amounts  relating  to the
Mortgage Loan within two Business  Days of the Election to Foreclose  subject to
Section 3.01.

     (c) With respect to any Mortgage Loan as to which the Purchaser has made an
Election  to  Foreclose,  the  related  Servicer  shall  continue to service the
Mortgage  Loan  in  accordance  with  its  customary   procedures   (other  than
Commencement of Foreclosure as provided herein).  In connection  therewith,  the
Company shall have the same rights to make  withdrawals for Monthly Advances and
Liquidations  Expenses from the  Collateral  Fund as are provided  under Section
2.02(e), and the Company shall make reimbursements thereto to the limited extent
provided under such subsection in accordance with its customary procedures.  The
Company shall not be required to cause, to the extent that the Company as Master
Servicer is granted  such  authority  in the related  Servicing  Agreement,  the
related Servicer to proceed with the Commencement of Foreclosure if (i) the same
is stayed as a result of the  mortgagor's  bankruptcy or is otherwise  barred by
applicable  law, or to the extent that all legal  conditions  precedent  thereto
have not yet been complied with, or (ii) the Company  believes there is a breach
of representations or warranties by the Company, a Servicer,  or a Seller, which
may result in a repurchase or  substitution  of such Mortgage Loan, or (iii) the
Company or related Servicer  reasonably  believes the Mortgaged  Property may be
contaminated with or affected by hazardous wastes or hazardous  substances (and,
without  limiting  the  related   Servicer's  right  not  to  proceed  with  the
Commencement of Foreclosure, the Company supplies the Purchaser with information
supporting  such  belief).  Any  foreclosure  that  has  been  initiated  may be
discontinued  (x) without  notice to the Purchaser if the Mortgage Loan has been
brought  current or if a refinancing  or  prepayment  occurs with respect to the
Mortgage Loan  (including by means of a short payoff  approved by the Purchaser)
or (y) with  notice to the  Purchaser  if the related  Servicer  has reached the
terms of a forbearance  agreement unless  instructed  otherwise by the Purchaser
within two Business Days of such  notification.  Any such  instruction  shall be
based upon a decision that such forbearance  agreement is not in conformity with
reasonable servicing practices.

     (d) Upon the occurrence of a liquidation  with respect to any Mortgage Loan
as to which the  Purchaser  made an  Election to  Foreclose  and as to which the
related  Servicer  proceeded with the  Commencement of Foreclosure in accordance
with subsection (c) above,  the Company shall  calculate the amount,  if any, by
which  the  unpaid  principal  balance  of the  Mortgage  Loan  at the  time  of
liquidation  (plus  all  unreimbursed   interest  and  servicing   advances  and
Liquidation  Expenses  in  connection  therewith  other than those paid from the
Collateral  Fund)  exceeds  the actual  sales  price  obtained  for the  related
Mortgaged  Property,  and the Company  shall  withdraw the amount of such excess
from the  Collateral  Fund,  shall remit the same to the Trust Estate and in its
capacity as Master  Servicer  shall apply such amount as additional  Liquidation
Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After  making such
withdrawal,  all amounts  remaining in the Collateral Fund (after adjustment for
all  withdrawals  and  deposits  pursuant to  subsection  (c) in respect of such
Mortgage Loan shall be released to the Purchaser.

     Section 2.04 Termination

     (a) With respect to all Mortgage  Loans  included in the Trust Estate,  the
Purchaser's  right to make any Election to Delay  Foreclosure or any Election to
Foreclose and the Company's  obligations  under Section 2.01 shall terminate (i)
at such  time as the  Principal  Balance  of the Class B  Certificates  has been
reduced  to  zero,  (ii) if the  greater  of (x) 43% (or such  lower  or  higher
percentage  that  represents  the  related  Servicer's  actual  historical  loss
experience  with respect to the Mortgage Loans in the related pool as determined
by the Company) of the aggregate  principal  balance of all Mortgage  Loans that
are in  foreclosure or are more than 90 days  delinquent on a contractual  basis
and REO  properties  or (y) the  aggregate  amount  that the  Company  estimates
through the normal servicing  practices of the related Servicer will be required
to be withdrawn  from the  Collateral  Fund with respect to Mortgage Loans as to
which the Purchaser has made an Election to Delay  Foreclosure or an Election to
Foreclosure,  exceeds  (z) the  then-current  principal  balance  of the Class B
Certificates,  (iii) upon any transfer by the  Purchaser of any interest  (other
than the minority interest therein,  but only if the transferee provides written
acknowledgment  to the Company of the Purchaser's  right hereunder and that such
transferee will have no rights  hereunder) in the Class B Certificates  (whether
or not such transfer is registered  under the Pooling and Servicing  Agreement),
including any such transfer in connection with a termination of the Trust Estate
or (iv) upon any breach of the terms of this Agreement by the Purchaser.

     (b)  Except as set forth in  2.04(a),  this  Agreement  and the  respective
rights,  obligations  and  responsibilities  of the  Purchaser  and the  Company
hereunder shall  terminate upon the later to occur of (i) the final  liquidation
of the last Mortgage  Loan as to which the Purchaser  made any Election to Delay
Foreclosure  or any Election to Foreclose  and the  withdrawal  of all remaining
amounts in the  Collateral  Fund as provided  herein and (ii) ten Business Days'
notice.  The Purchaser's  right to make an election  pursuant to Section 2.02 or
Section 2.03 hereof with respect to a particular  Mortgage Loan shall  terminate
if the Purchaser fails to make any deposit required  pursuant to Section 2.02(d)
or 2.03(b) or if the Purchaser fails to make any other deposit to the Collateral
Fund pursuant to this Agreement.



                                   ARTICLE III

                       COLLATERAL FUND; SECURITY INTEREST

     Section 3.01. Collateral Fund

     Upon  receipt  from the  Purchaser  of the  initial  amount  required to be
deposited  in the  Collateral  Fund  pursuant to Article  II, the Company  shall
establish and maintain with Bankers Trust Company as a segregated account on its
books and records an account (the  "Collateral  Fund"),  entitled  "Norwest Bank
Minnesota,  National  Association,  as  Master  Servicer,  for  the  benefit  of
registered holders of Norwest Asset Securities Corporation Mortgage Pass-Through
Certificates, Series 1997-16. Amounts held in the Collateral Fund shall continue
to be the  property of the  Purchaser,  subject to the first  priority  security
interest  granted  hereunder  for the benefit of the  Certificateholders,  until
withdrawn from the Collateral Fund pursuant to Section 2.02 or 2.03 hereof.  The
Collateral  Fund shall be an "outside  reserve  fund"  within the meaning of the
REMIC  Provisions,  beneficially  owned by the Purchaser for federal  income tax
purposes.  All income,  gain,  deduction or loss with respect to the  Collateral
Fund shall be that of the Purchaser.  All  distributions  from the Trust Fund to
the  Collateral  Fund shall be treated as  distributed  to the  Purchaser as the
beneficial owner thereof.

     Upon the  termination of this Agreement and the liquidation of all Mortgage
Loans as to which the  Purchaser has made any Election to Delay  Foreclosure  or
any Election to Foreclose  pursuant to Section  2.04 hereof,  the Company  shall
distribute or cause to be distributed to the Purchaser all amounts  remaining in
the Collateral Fund (after adjustment for all deposits and permitted withdrawals
pursuant to this Agreement)  together with any investment  earnings thereon.  In
the  event the  Purchaser  has made any  Election  to Delay  Foreclosure  or any
Election to Foreclose, prior to any distribution to the Purchaser of all amounts
remaining in the Collateral  Fund, funds in the Collateral Fund shall be applied
consistent with the terms of this Agreement.

     Section 3.02. Collateral Fund Permitted Investments.

     The Company shall,  at the written  direction of the Purchaser,  invest the
funds in the  Collateral  Fund in Collateral  Fund Permitted  Investments.  Such
direction shall not be changed more frequently than quarterly. In the absence of
any direction,  the Company shall select such investments in accordance with the
definition of Collateral Fund Permitted Investments in its discretion.

     All income and gain  realized  from any  investment as well as any interest
earned  on  deposits  in  the  Collateral  Fund  (net  of  any  losses  on  such
investments)  and any  payments of principal  made in respect of any  Collateral
Fund  Permitted  Investment  shall be  deposited  in the  Collateral  Fund  upon
receipt.  All costs and realized losses associated with the purchase and sale of
Collateral  Fund Permitted  Investments  shall be borne by the Purchaser and the
amount  of net  realized  losses  shall be  deposited  by the  Purchaser  in the
Collateral Fund promptly upon realization.  The Company shall  periodically (but
not more  frequently  than monthly)  distribute to the Purchaser upon request an
amount of cash,  to the extent cash is  available  therefore  in the  Collateral
Fund,  equal to the amount by which the balance of the  Collateral  Fund,  after
giving effect to all other  distributions to be made from the Collateral Fund on
such  date,  exceeds  the  Required  Collateral  Fund  Balance.  Any  amounts so
distributed  shall be  released  from the lien  and  security  interest  of this
Agreement.

     Section 3.03. Grant of Security Interest

     The  Purchaser  hereby  grants  to  the  Company  for  the  benefit  of the
Certificateholders under the Pooling and Servicing Agreement a security interest
in and lien on all of the  Purchaser's  right,  title and interest,  whether now
owned or hereafter acquired, in and to: (1) the Collateral Fund, (2) all amounts
deposited in the Collateral  Fund and Collateral  Fund Permitted  Investments in
which such  amounts are  invested  (and the  distributions  and proceeds of such
investments)  and (3) all cash and  non-cash  proceeds of any of the  foregoing,
including  proceeds of the  voluntary  conversion  thereof (all of the foregoing
collectively, the "Collateral").

     The  Purchaser  acknowledges  the lien on and the security  interest in the
Collateral for the benefit of the  Certificateholders.  The Purchaser shall take
all actions  requested by the Company as may be reasonably  necessary to perfect
the security  interest  created under this Agreement in the Collateral and cause
it to be  prior  to all  other  security  interests  and  liens,  including  the
execution  and  delivery  to the  Company  for filing of  appropriate  financing
statements in accordance with applicable law. The Company shall file appropriate
continuation  statements,  or  appoint  an  agent  on its  behalf  to file  such
statements, in accordance with applicable law.

     Section 3.04. Collateral Shortfalls.

     In the event that amounts on deposit in the Collateral Fund at any time are
insufficient  to  cover  any  withdrawals  therefrom  that the  Company  is then
entitled to make hereunder, the Purchaser shall be obligated to pay such amounts
to the Company  immediately  upon demand.  Such  obligation  shall  constitute a
general corporate  obligation of the Purchaser.  The failure to pay such amounts
within two Business Days of such demand (except for amounts to cover interest on
a Mortgage  Loan  pursuant  to Sections  2.02(d)  and 2.03 (b)),  shall cause an
immediate  termination  of the  Purchaser's  right to make any Election to Delay
Foreclosure  or Election to Foreclose and the Company's  obligations  under this
Agreement  with  respect to all  Mortgage  Loans to which  such  insufficiencies
relate, without the necessity of any further notice or demand on the part of the
Company.



                                   ARTICLE IV

                            MISCELLANEOUS PROVISIONS


     Section 4.01. Amendment.

     This  Agreement  may be amended  from time to time by the  Company  and the
Purchaser by written agreement signed by the Company and the Purchaser.

     Section 4.02. Counterparts.

     This   Agreement   may  be  executed   simultaneously   in  any  number  of
counterparts,  each of which counterparts shall be deemed to be an original, and
such counterparts shall constitute but one and the same instrument.

     Section 4.03. Governing Law.

     This Agreement  shall be construed in accordance with the laws of the State
of New York and the  obligations,  rights and remedies of the parties  hereunder
shall be determined in accordance with such laws.

     Section 4.04. Notices.

     All  demands,  notices and  direction  hereunder  shall be in writing or by
telecopy and shall be deemed effective upon receipt to:

                  (a)      in the case of the Company,

                           Norwest Bank Minnesota, National Association
                           7485 New Horizon Way
                           Frederick, MD  21703

                           Attention:       Vice President, Master Servicing
                           Phone:           301-696-7800
                           Fax:             301-815-6365


                  (b)      in the case of the Purchaser,





                           Attention:


                  Section 4.05.     Severability of Provisions.

     If any one or more of the covenants, agreements, provision or terms of this
Agreement  shall  be for  any  reason  whatsoever,  including  regulatory,  held
invalid, then such covenants, agreements,  provisions or terms of this Agreement
and  shall  in no way  affect  the  validity  or  enforceability  of  the  other
provisions of this Agreement.

     Section 4.06. Successors and Assigns.

     The  provisions  of this  Agreement  shall be binding upon and inure to the
benefit of the respective  successors and assigns of the parties hereto, and all
such provisions shall inure to the benefit of the Certificateholders;  provided,
however,  that the  rights  under  this  Agreement  cannot  be  assigned  by the
Purchaser without the consent of the Company.

     Section 4.07. Article and Section Headings.

     The article and section  headings  herein are for  convenience of reference
only and shall not limit or otherwise affect the meaning hereof.

     Section 4.08. Confidentiality.

     The Purchaser  agrees that all information  supplied by or on behalf of the
Company  pursuant  to  Sections  2.01  or  2.02,  including  individual  account
information,  is the  property of the Company and the  Purchaser  agrees to hold
such information confidential and not to disclose such information.

     Each party  hereto  agrees  that  neither  it, nor any  officer,  director,
employee,  affiliate or independent  contractor acting at such party's direction
will  disclose  the terms of  Section  4.09 of this  Agreement  to any person or
entity  other  than such  party's  legal  counsel  except  pursuant  to a final,
non-appealable  order of court,  the pendency of such order the other party will
have  received  notice of at least five business days prior to the date thereof,
or pursuant to the other party's prior express written consent.

     Section 4.09. Indemnification.

     The Purchaser  agrees to indemnify  and hold harmless the Company,  NASCOR,
and each  Servicer  and each  person who  controls  the  Company,  NASCOR,  or a
Servicer and each of their respective officers, directors, affiliates and agents
acting at the Company's,  NASCOR's,  or a Servicer's direction (the "Indemnified
Parties")  against any and all losses,  claims,  damages or liabilities to which
they may be subject,  insofar as such losses, claims, damages or liabilities (or
actions in respect  thereof) arise out of, or are based upon,  actions taken by,
or actions not taken by, the Company, NASCOR, or a Servicer, or on their behalf,
in  accordance  with the  provisions  of this  Agreement  and (i) which  actions
conflict with the Company's,  NASCOR's,  or a Servicer's  obligations  under the
Pooling and Servicing Agreement or the related Servicing Agreement, or (ii) give
rise to securities  law liability  under federal or state  securities  laws with
respect to the  Certificates.  The  Purchaser  hereby  agrees to  reimburse  the
Indemnified  Parties for the reasonable legal or other expenses incurred by them
in connection  with  investigating  or defending any such loss,  claim,  damage,
liability or action. The indemnification  obligations of the Purchaser hereunder
shall survive the termination or expiration of this Agreement.

<PAGE>





     IN WITNESS  WHEREOF,  the Company and the Purchaser have caused their names
to be signed hereto by their respective officers thereunto duly authorized,  all
as of the day and year first above written.

                         Norwest Bank Minnesota, National Association


                         By:
                         Name:
                         Title:





                        By:
                        Name:
                        Title:   ________________________





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