STRUCTURED ASSET SECURITIES CORP
8-K, 1998-05-15
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 AND EXCHANGE ACT OF 1934

                Date of Report (Date of earliest event reported)
                                 April 30, 1998

         STRUCTURED ASSET SECURITIES CORPORATION (as depositor under the Trust
         Agreement,  dated as of April 1, 1998,  providing for the issuance of
         Structured Asset Securities Corporation Mortgage Pass-Through
         Certificates, Series 1998-4)

                    Structured Asset Securities Corporation
            ______________________________________________________
            (Exact Name of Registrant as Specified in its Charter)

         Delaware                      333-47499               74-2440805
____________________________         _____________          __________________
(State or Other Jurisdiction         (Commission            (I.R.S. Employer
  of Incorporation)                   File Number)          Identification No.)


     200 Vesey Street
     New York, New York                  10285
____________________________           _________   
  (Address of Principal                (Zip Code)
   Executive Offices)

          Registrant's telephone number, including area code: (212) 526-5594

                                   No Change
          ___________________________________________________________
         (Former Name or Former Address, if Changed Since Last Report)

          Item 5. Other Events

     A. The Registrant  registered  issuances of Structured  Asset  Securities
Corporation  Mortgage  Pass-Through  Certificates  on a delayed or  continuous
basis  pursuant to Rule 415 under the  Securities Act of 1933, as amended (the
"Act"),  by a  Registration  Statement  on Form  S-3  (Registration  File  No.
333-47499)  (the  "Registration  Statement").  Pursuant  to  the  Registration
Statement, the Registrant issued $759,131,000 in aggregate principal amount of
Class A-1, Class A-2,  Class M-1,  Class M-2 and Class B  Certificates  of its
Structured Asset Securities  Corporation Mortgage  Pass-Through  Certificates,
Series  1998-4 on April 30,  1998.  This  Current  Report on Form 8-K is being
filed to satisfy an undertaking,  contained in the definitive Prospectus dated
March 18, 1998, as supplemented by the Prospectus  Supplement  dated April 27,
1998 (the "Prospectus Supplement"),  to file a copy of the Trust Agreement (as
defined below) executed in connection with the issuance of the Certificates, a
form of which was filed as an exhibit to the Registration Statement.

     The  Certificates  were issued  pursuant to a Trust Agreement (the "Trust
Agreement"),  attached hereto as Exhibit 4.1, dated as of March 1, 1998, among
Structured  Asset  Securities  Corporation,  as depositor  (the  "Depositor"),
Norwest Bank  Minnesota,  National  Association,  as master servicer and First
Union National Bank, as trustee (the "Trustee"). The "Certificates" consist of
the following  classes:  Class A-1,  Class A-2, Class M-1, Class M-2, Class B,
Class X and Class R. The  Certificates  evidence all the beneficial  ownership
interest in a trust fund (the "Trust Fund") that consists  primarily of a pool
of fixed and adjustable  rate,  fully  amortizing  and balloon,  conventional,
first lien residential mortgage loans (the "Mortgage Loans") with an aggregate
outstanding principal balance of $769,131,604.23 as of April 1, 1998, together
with certain  other  assets.  Capitalized  terms used herein and not otherwise
defined shall have the meanings assigned to them in the Trust Agreement.

     Item  7.  Financial  Statements;  Pro  Forma  Financial  Information  and
Exhibits

     (a) Not applicable.

     (b) Not applicable.

     (c) Exhibits:

               1.1 Terms Agreement,  dated April 1, 1998,  between  Structured
               Asset Securities Corporation and Lehman Brothers Inc.

               4.1  Trust  Agreement,   dated  as  of  April  1,  1998,  among
               Structured Asset Securities Corporation, as Depositor,  Norwest
               Bank Minnesota,  National  Association,  as Master Servicer and
               First Union National Bank, as Trustee.

               99.1 Mortgage Loan Sale and Assignment  Agreement,  dated as of
               April 1, 1998,  between  Lehman  Capital,  A Division of Lehman
               Brothers  Holdings  Inc.,  as  Seller,   and  Structured  Asset
               Securities Corporation, as Purchaser.

               99.2 Special  Servicing  Agreement,  dated as of April 1, 1998,
               between Lehman Capital,  A Division of Lehman Brothers Holdings
               Inc., and Ocwen Federal Bank FSB, as special servicer.

               99.3*  Servicing  Agreement,  dated  as of  December  1,  1997,
               between Lehman Capital,  A Division of Lehman Brothers Holdings
               Inc., and Ocwen Federal Bank FSB, as special servicer.

               99.4 Servicing  Agreement,  dated as of April 1, 1998,  between
               Lehman Capital,  A Division of Lehman  Brothers  Holdings Inc.,
               and Aurora Loan Services Inc., as servicer.

               99.5* Flow Servicing Agreement,  dated as of September 1, 1997,
               between Lehman Capital,  A Division of Lehman Brothers Holdings
               Inc., and Aurora Loan Services Inc., as servicer.

               99.6 Servicing  Agreement,  dated as of April 1, 1998,  between
               Lehman Capital,  A Division of Lehman  Brothers  Holdings Inc.,
               and Option One Mortgage Corporation, as servicer.

               99.7* Seller's Warranties and Servicing Agreement,  dated as of
               September  30,  1997,  between  Lehman  Capital,  A Division of
               Lehman   Brothers   Holdings  Inc.,  and  Option  One  Mortgage
               Corporation, as servicer.


     *   Incorporated by reference to the  Depositor's  Current Report on Form
         8-K dated March 30,  1998,  filed with the  Securities  and  Exchange
         Commission on April 14, 1998 (File No. 333-47499).



                                   SIGNATURES

     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.

                                               STRUCTURED ASSET SECURITIES
                                               CORPORATION


                                               By: /s/ Stanley P. Labanowski
                                                   __________________________
                                                   Name:  Stanley P. Labanowski
                                                   Title: Authorized Signatory

Dated:  May 14, 1998

EXHIBIT INDEX

Exhibit
No.                                 Description                       Page No.

                 1.1  Terms  Agreement,   dated  April  1,  1998,
                 between Structured Asset Securities  Corporation
                 and Lehman Brothers Inc.

                 4.1 Trust Agreement,  dated as of April 1, 1998,
                 among Structured  Asset Securities  Corporation,
                 as Depositor,  Norwest Bank Minnesota,  National
                 Association,  as Master Servicer and First Union
                 National Bank, as Trustee.

                 99.1   Mortgage   Loan   Sale   and   Assignment
                 Agreement,  dated as of April 1,  1998,  between
                 Lehman  Capital,  A Division of Lehman  Brothers
                 Holdings Inc., as Seller,  and Structured  Asset
                 Securities Corporation, as Purchaser.

                 99.2 Special  Servicing  Agreement,  dated as of
                 April  1,  1998,   between  Lehman  Capital,   A
                 Division of Lehman  Brothers  Holdings Inc., and
                 Ocwen Federal Bank FSB, as special servicer.

                 99.3* Servicing Agreement,  dated as of December
                 1, 1997,  between Lehman Capital,  A Division of
                 Lehman Brothers Holdings Inc., and Ocwen Federal
                 Bank FSB, as special servicer.

                 99.4 Servicing  Agreement,  dated as of April 1,
                 1998,  between  Lehman  Capital,  A Division  of
                 Lehman  Brothers  Holdings Inc., and Aurora Loan
                 Services Inc., as servicer.

                 99.5*  Flow  Servicing  Agreement,  dated  as of
                 September 1, 1997,  between  Lehman  Capital,  A
                 Division of Lehman  Brothers  Holdings Inc., and
                 Aurora Loan Services Inc., as servicer.

                 99.6 Servicing  Agreement,  dated as of April 1,
                 1998,  between  Lehman  Capital,  A Division  of
                 Lehman  Brothers  Holdings  Inc., and Option One
                 Mortgage Corporation, as servicer.

                 99.7*   Seller's    Warranties   and   Servicing
                 Agreement,  dated  as  of  September  30,  1997,
                 between  Lehman  Capital,  A Division  of Lehman
                 Brothers  Holdings Inc., and Option One Mortgage
                 Corporation, as servicer.

     *   Incorporated by reference to the  Depositor's  Current Report on Form
         8-K dated March 30,  1998,  filed with the  Securities  and  Exchange
         Commission on April 14, 1998 (File No. 333-47499).



                                                                      EXECUTION

                    STRUCTURED ASSET SECURITIES CORPORATION
               MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 1998-4



                                TERMS AGREEMENT

                                                     Dated: April 27, 1998

          To: Structured Asset Securities Corporation, as Depositor under the
          Trust Agreement dated as of April 1, 1998 (the "Trust Agreement").

          Re: Underwriting Agreement Standard Terms dated as of April 16, 1996
          (the "Standard Terms," and together with this Terms Agreement, the
          "Agreement").

Series Designation:  Series 1998-4.

Terms of the Series 1998-4 Certificates: Structured Asset Securities
Corporation Series 1998-4 Mortgage Pass-Through Certificates, Class A-1, Class
A-2, Class M-1, Class M-2, Class B, Class X and Class R (the "Certificates")
will evidence, in the aggregate, the entire beneficial ownership interest in a
trust fund (the "Trust Fund"). The primary assets of the Trust Fund will
consist of fixed and adjustable rate, fully amortizing and balloon,
conventional, first lien residential mortgage loans (the "Mortgage Loans").
Only the Class A-1, Class A-2, Class M-1, Class M-2 and Class B Certificates
(the "Offered Certificates") are being sold pursuant to the terms hereof.

Registration Statement:  File Number 333-47499

Certificate Ratings: It is a condition to the issuance of the Class A
Certificates that they be rated "AAA" by Standard & Poor's Rating Services, a
division of The McGraw-Hill Companies, Inc. ("S&P"). It is a condition to the
issuance of the Class M-1 Certificates that they be rated "AA" by S&P, it is a
condition to the issuance of the Class M-2 Certificates that they be rated "A"
by S&P and it is a condition to the issuance of the Class B Certificates that
they be rated "BBB" by S&P.

Terms of Sale of Offered Certificates: The Depositor agrees to sell to Lehman
Brothers Inc. (the "Underwriter") and the Underwriter agrees to purchase from
the Depositor, the Offered Certificates in the principal amounts and prices
set forth on Schedule 1 annexed hereto. The purchase price for the Offered
Certificates shall be the Purchase Price Percentage set forth in Schedule 1
plus accrued interest at the initial interest rate per annum from and
including the Cut-off Date up to, but not including, the Closing Date.

The Underwriter will offer the Offered Certificates to the public from time to
time in negotiated transactions or otherwise at varying prices to be
determined at the time of sale.

Cut-off Date:  April 1, 1998.

Closing Date: 10:00 A.M., New York time, on or about April 30, 1998. On the
Closing Date, the Depositor will deliver the Offered Certificates to the
Underwriter against payment therefor for the account of the Underwriter.


     If the foregoing is in accordance with your understanding of our
agreement, please sign and return to us a counterpart hereof, whereupon this
instrument along with all counterparts will become a binding agreement between
the Depositor and the Underwriter in accordance with its terms.

                                      LEHMAN BROTHERS INC.

                                      By:
           
                                      Name:  Theodore P. Janulis

                                      Title:   Managing Director

Accepted:

STRUCTURED ASSET SECURITIES
  CORPORATION

By:
    _____________________________
    Name:   Stanley P. Labanowski
    Title:  Authorized Signatory


Schedule 1

                     Initial
                    Certificate         Certificate           Purchase
                     Principal            Interest              Price
Class                Amount(1)              Rate              Percentage

Class A-1           $313,331,000            (2)                 100%
Class A-2            313,331,000            (2)                 100%
Class M-1             62,173,000            (2)                 100%
Class M-2             29,454,000            (2)                 100%
Class B               25,810,000            (2)                 100%

- -------------------------
(1)      Approximate.
(2)      Interest will accrue on the Class A-1, Class A-2 Class M-1, Class M-2
         and Class B Certificates at the applicable per annum rate described
         in the Prospectus Supplement.





             STRUCTURED ASSET SECURITIES CORPORATION, as Depositor,

        NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION, as Master Servicer,

                                       and

                      FIRST UNION NATIONAL BANK, as Trustee



                           ---------------------------

                                 TRUST AGREEMENT

                            Dated as of April 1, 1998
                           ---------------------------



                     STRUCTURED ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                  SERIES 1998-4


                                TABLE OF CONTENTS

Section                                                                     Page

                                    ARTICLE I

                                   DEFINITIONS

1.01.  Definitions...........................................................  3
1.02.  Calculations Respecting Mortgage Loans................................ 33
1.03.  Calculations Respecting Accrued Interest.............................. 33

                                   ARTICLE II

                              DECLARATION OF TRUST;
                            ISSUANCE OF CERTIFICATES

2.01.  Creation and Declaration of Trust Fund; Conveyance of Mortgage Loans...33
2.02.  Acceptance of Trust Fund by Trustee:
         Review of Documentation for Trust Fund.............................. 36
2.03.  Representations and Warranties of the Depositor........................37
2.04.  Discovery of Breach....................................................39
2.05.  Repurchase, Purchase or Substitution of Mortgage Loans.................40
2.06.  Grant Clause...........................................................41
2.07.  Purchase of Defaulted Mortgage Loans...................................41

                                   ARTICLE III

                                THE CERTIFICATES

3.01.  The Certificates.......................................................42
3.02.  Registration...........................................................42
3.03.  Transfer and Exchange of Certificates..................................43
3.04.  Cancellation of Certificates...........................................45
3.05.  Replacement of Certificates............................................46
3.06.  Persons Deemed Owners..................................................46
3.07.  Temporary Certificates.................................................46
3.08.  Appointment of Paying Agent............................................47
3.09.  Book-Entry Certificates................................................47

                                   ARTICLE IV

                        ADMINISTRATION OF THE TRUST FUND

4.01.  Collection Account.....................................................49
4.02.  Application of Funds in the Collection Account.........................51
4.03.  Reports to Certificateholders..........................................53
4.04.  Certificate Account....................................................55
4.05.  Determination of LIBOR.................................................56
4.06.  Determination of Fed Funds Average Rate................................57

                                    ARTICLE V

                    DISTRIBUTIONS TO HOLDERS OF CERTIFICATES

5.01.  Distributions Generally................................................59
5.02.  Distributions from the Certificate Account.............................59
5.03.  Allocation of Losses...................................................63
5.04.  Advances by Master Servicer and Trustee................................63
5.05.  Compensating Interest Payments.........................................64
5.06.  REMIC 1, REMIC 2, REMIC 3 and REMIC 4 Allocations......................64
5.07.  Directing Holder Servicing Fee.........................................68
5.08.  Basis Risk Reserve Fund................................................68

                                   ARTICLE VI

                    CONCERNING THE TRUSTEE; EVENTS OF DEFAULT

6.01.  Duties of Trustee......................................................69
6.02.  Certain Matters Affecting the Trustee..................................70
6.03.  Trustee Not Liable for Certificates....................................71
6.04.  Trustee May Own Certificates...........................................72
6.05.  Eligibility Requirements for Trustee...................................72
6.06.  Resignation and Removal of Trustee.....................................72
6.07.  Successor Trustee......................................................73
6.08.  Merger or Consolidation of Trustee.....................................73
6.09.  Appointment of Co-Trustee, Separate Trustee or Custodian...............74
6.10.  Authenticating Agents..................................................75
6.11.  Indemnification of Trustee.............................................76
6.12.  Fees and Expenses of Trustee...........................................77
6.13.  Collection of Monies...................................................77
6.14.  Trustee To Act; Appointment of Successor...............................77
6.15.  Additional Remedies of Trustee Upon Event of Default...................81
6.16.  Waiver of Defaults.....................................................81
6.17.  Notification to Holders................................................81
6.18.  Directions by Certificateholders and
        Duties of Trustee During Event of Default............................ 82
6.19.  Action Upon Certain Failures of the
        Master Servicer and Upon Event of Default............................ 82

                                   ARTICLE VII

                         PURCHASE AND TERMINATION OF THE
                                   TRUST FUND

7.01.  Termination of Trust Fund Upon Repurchase or
         Liquidation of All Mortgage Loans................................... 82
7.02.  Procedure Upon Termination of Trust Fund.............................. 84
7.03.  Additional Trust Fund Termination Requirements........................ 85

                                  ARTICLE VIII

                          RIGHTS OF CERTIFICATEHOLDERS

8.01.  Limitation on Rights of Holders....................................... 86
8.02.  Access to List of Holders............................................. 87
8.03.  Acts of Holders of Certificates....................................... 88

                                   ARTICLE IX

                 ADMINISTRATION AND SERVICING OF MORTGAGE LOANS
                             BY THE MASTER SERVICER

9.01.  Duties of the Master Servicer......................................... 89
9.02.  Master Servicer Fidelity Bond and Master Servicer
         Errors and Omissions Insurance Policy............................... 89
9.03.  Master Servicer's Financial Statements and Related Information........ 90
9.04.  Power to Act; Procedures.............................................. 90
9.05.  Servicing Agreements Between the Master Servicer
         and Servicers; Enforcement of Servicers' Obligations................ 92
9.06.  Collection of Taxes, Assessments and Similar Items.................... 92
9.07.  Termination of Servicing Agreements; Successor Servicers.............. 93
9.08.  Master Servicer Liable for Enforcement................................ 94
9.09.  No Contractual Relationship Between Servicers and
         Trustee or Depositor................................................ 94
9.10.  Assumption of Servicing Agreement by Trustee.......................... 94
9.11.  "Due-on-Sale" Clauses; Assumption Agreements.......................... 95
9.12.  Release of Mortgage Files............................................. 95
9.13.  Documents, Records and Funds in Possession of Master
         Servicer To Be Held for Trustee..................................... 96
9.14.  Representations and Warranties of the Master Servicer................. 97
9.15.  Closing Certificate and Opinion....................................... 99
9.16.  Standard Hazard and Flood Insurance Policies..........................100
9.17.  Presentment of Claims and Collection of Proceeds......................100
9.18.  Maintenance of the Primary Mortgage Insurance Policies................100
9.19.  Trustee To Retain Possession of Certain Insurance
         Policies and Documents..............................................101
9.20.  Realization Upon Defaulted Mortgage Loans.............................101
9.21.  Compensation to the Master Servicer...................................101
9.22.  REO Property..........................................................102
9.23.  Preparation of Tax Returns and Other Reports..........................103
9.24.  Reports to the Trustee................................................104
9.25.  Annual Officer's Certificate as to Compliance.........................104
9.26.  Annual Independent Accountants' Servicing Report......................105
9.27.  Merger or Consolidation...............................................105
9.28.  Resignation of Master Servicer........................................105
9.29.  Assignment or Delegation of Duties by the Master Servicer.............106
9.30.  Limitation on Liability of the Master Servicer and Others.............106
9.31.  Indemnification; Third-Party Claims...................................107
9.32.  Alternative Index.....................................................107

                                    ARTICLE X

                              REMIC ADMINISTRATION

10.01.  REMIC Administration.................................................107
10.02.  Prohibited Transactions and Activities...............................109
10.03.  Indemnification with Respect to Certain Taxes
          and Loss of REMIC Status...........................................110
10.04.  REO Property.........................................................110

                                   ARTICLE XI

                            MISCELLANEOUS PROVISIONS

11.01.  Binding Nature of Agreement; Assignment..............................111
11.02.  Entire Agreement.....................................................112
11.03.  Amendment............................................................112
11.04.  Voting Rights........................................................113
11.05.  Provision of Information.............................................113
11.06.  Governing Law........................................................114
11.07.  Notices..............................................................114
11.08.  Severability of Provisions...........................................114
11.09.  Indulgences; No Waivers..............................................114
11.10.  Headings Not To Affect Interpretation................................114
11.11.  Benefits of Agreement................................................115
11.12.  Special Notices to the Rating Agencies...............................115
11.13.  Counterparts.........................................................116
11.14.  Transfer of Servicing................................................116


ATTACHMENTS

Exhibit A                     Forms of Certificates
Exhibit B-1                   Form of Initial Certification
Exhibit B-2                   Form of Interim Certification
Exhibit B-3                   Form of Final Certification
Exhibit B-4                   Form of Endorsement
Exhibit C                     Request for Release of Documents and Receipt
Exhibit D-l                   Residual Certificate Transfer Affidavit
                              (Transferee)
Exhibit D-2                   Residual Certificate Transfer Affidavit
                              (Transferor)
Exhibit E                     Servicing Agreements
Exhibit F                     Form of Rule 144A Transfer Certificate
Exhibit G                     Form of Purchaser's Letter for Institutional
                              Accredited Investors
Exhibit H                     Form of ERISA Transfer Affidavit
Exhibit I                     Monthly Remittance Advice
Exhibit J                     Monthly Electronic Data Transmission
Exhibit K                     Custodial Agreement
Exhibit L                     Special Servicing Compensation Agreement

Schedule A                    Mortgage Loan Schedule


         This TRUST AGREEMENT,  dated as of April 1, 1998 (the "Agreement"),  is
by and among STRUCTURED ASSET SECURITIES CORPORATION, a Delaware corporation, as
depositor (the "Depositor"),  NORWEST BANK MINNESOTA,  NATIONAL ASSOCIATION,  as
master  servicer  (the  "Master  Servicer"),  and FIRST UNION  NATIONAL  BANK, a
national banking association with its main office in Charlotte,  North Carolina,
as trustee (the "Trustee").

                              PRELIMINARY STATEMENT

         The Depositor has acquired the Mortgage  Loans from Lehman  Capital,  A
Division of Lehman Brothers Holdings Inc. ("Lehman Capital"), and at the Closing
Date is the owner of the Mortgage Loans and the other property being conveyed by
it to the Trustee for  inclusion  in the Trust Fund.  On the Closing  Date,  the
Depositor will acquire the  Certificates  from the Trust Fund, as  consideration
for its transfer to the Trust Fund of the Mortgage  Loans and the other property
constituting the Trust Fund. The Depositor has duly authorized the execution and
delivery of this  Agreement to provide for the  conveyance to the Trustee of the
Mortgage Loans and the other property constituting the Trust Fund. All covenants
and agreements made by the Depositor, the Master Servicer and the Trustee herein
with respect to the Mortgage Loans and the other property constituting the Trust
Fund are for the benefit of the Holders  from time to time of the  Certificates.
The Depositor and the Master Servicer are entering into this Agreement,  and the
Trustee  is  accepting  the Trust Fund  created  hereby,  for good and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged.

         As  provided  herein,  the  Trustee  shall elect that the Trust Fund be
treated for federal  income tax purposes as four separate  real estate  mortgage
investment  conduits (each a "REMIC" or, in the  alternative,  "REMIC 1," "REMIC
2," "REMIC 3," and "REMIC 4,"  respectively,  REMIC 4 also being  referred to as
the "Upper Tier  REMIC").  The Class A-1,  Class A-2,  Class M-1.  Class M-2 and
Class B Certificates and the Class X Certificate  represent  ownership of all of
the  "regular  interests"  in REMIC 4 (the Class T4-1,  Class T4-2,  Class T4-3,
Class T4-4,  Class T4-5,  Class T4-6,  Class T4-7,  Class T4-8,  Class T4-9, and
Class T4-10 Interests),  and the Class R4 Interests  represent the sole class of
"residual interest" in REMIC 4 for purposes of the REMIC Provisions. Each of the
Class  R1,  R2,  and R3  Certificates  represents  the sole  class of  "residual
interest"  in REMIC 1, REMIC 2, and REMIC 3,  respectively,  for purposes of the
REMIC Provisions. There are also three classes of uncertificated REMIC 1 Regular
Interests  issued under this  Agreement  (the Class T1-1,  Class T1-2, and Class
T1-3  Interests),  each of which will constitute  regular  interests in REMIC 1,
four classes of uncertificated  REMIC 2 Regular Interests (the Class T2-1, Class
T2-2,  Class  T2-3,  and Class T2-4  Interests),  each of which will  constitute
regular  interests  in REMIC 2, and  eight  classes  of  uncertificated  REMIC 3
Regular  Interests (the Class T3-1,  Class T3-2,  Class T3-3,  Class T3-4, Class
T3-5,  Class T3-6,  Class T3-7,  and Class T3-8  Interests),  each of which will
constitute  regular  interests in REMIC 3. The REMIC 1 Regular Interests will be
held as assets of REMIC 2, the REMIC 2 Regular  Interests will be held as assets
of REMIC 3, and the REMIC 3 Regular Interests will be held as assets of REMIC 4.

         The following  table sets forth (or describes)  the Class  designation,
Certificate  Interest  Rate,  initial  Class  Certificate  Principal  Amount and
minimum denomination for each Class of Certificates  comprising the interests in
the Trust Fund created hereunder.
<TABLE>
<CAPTION>

    Class Designation        Certificate Interest Rate        Initial Certificate                     Minimum
                                                               Principal Amount                    Denominations

<S>                                     <C>                            <C>                          <C>
        Class A-1                       (1)                            $313,331,000.00              $100,000
        Class A-2                       (2)                             313,331,000.00               100,000
        Class M-1                       (3)                              62,173,000.00               100,000
        Class M-2                       (4)                              29,454,000.00               100,000
        Class B                         (5)                              25,810,000.00               100,000
        Class X                         (6)                                        (6)                   (7)
        Class R                         (6)                                        (6)                   (7)

</TABLE>

- ---------------------------
(1)      The Certificate Interest Rate with respect to any Distribution Date for
         the Class A-1  Certificates  is a per annum  rate equal to the least of
         (i) the Fed Funds Average Rate plus 0.25%, (ii) 9.50% and (iii) the Net
         Funds Cap for such  Distribution  Date;  provided,  that if the Class X
         Certificateholder  does not  exercise its option to purchase the assets
         of the Trust Fund pursuant to Section  7.01(c) or to purchase the Class
         A-1, Class A-2, Class M-1, Class M-2 and Class B Certificates  pursuant
         to Section 7.01(d) on the first  Distribution Date on which it is first
         entitled to do so, with respect to each  subsequent  Distribution  Date
         the per annum rate calculated  pursuant to clause (i) above will be the
         Fed Funds Average Rate plus 0.50%.

(2)      The Certificate Interest Rate with respect to any Distribution Date for
         the Class A-2  Certificates  is a per annum  rate equal to the least of
         (i) LIBOR plus  0.24%,  (ii) 9.50% and (iii) the Net Funds Cap for such
         Distribution Date; provided, that if the Class X Certificateholder does
         not  exercise  its  option to  purchase  the  assets of the Trust  Fund
         pursuant to Section  7.01(c) or to purchase  the Class A-1,  Class A-2,
         Class  M-1,  Class M-2 and Class B  Certificates  pursuant  to  Section
         7.01(d) on the first Distribution Date on which it is first entitled to
         do so, with respect to each subsequent  Distribution Date the per annum
         rate calculated pursuant to clause (i) above will be LIBOR plus 0.48%.

(3)      The Certificate Interest Rate with respect to any Distribution Date for
         the Class M-1  Certificates  is a per annum  rate equal to the least of
         (i) LIBOR plus  0.43%,  (ii) 9.50% and (iii) the Net Funds Cap for such
         Distribution Date; provided, that if the Class X Certificateholder does
         not  exercise  its  option to  purchase  the  assets of the Trust  Fund
         pursuant to Section  7.01(c) or to purchase  the Class A-1,  Class A-2,
         Class  M-1,  Class M-2 and Class B  Certificates  pursuant  to  Section
         7.01(d) on the first Distribution Date on which it is first entitled to
         do so, with respect to each subsequent  Distribution Date the per annum
         rate calculated pursuant to clause (i) above will be LIBOR plus 0.93%.

(4)      The Certificate Interest Rate with respect to any Distribution Date for
         the Class M-2  Certificates  is a per annum  rate equal to the least of
         (i) LIBOR plus  0.75%,  (ii) 9.50% and (iii) the Net Funds Cap for such
         Distribution Date; provided, that if the Class X Certificateholder does
         not  exercise  its  option to  purchase  the  assets of the Trust  Fund
         pursuant to Section  7.01(c) or to purchase  the Class A-1,  Class A-2,
         Class  M-1,  Class M-2 and Class B  Certificates  pursuant  to  Section
         7.01(d) on the first Distribution Date on which it is first entitled to
         do so, with respect to each subsequent  Distribution Date the per annum
         rate calculated pursuant to clause (i) above will be LIBOR plus 1.25%.

(5)      The Certificate Interest Rate with respect to any Distribution Date for
         the Class B Certificates  is a per annum rate equal to the least of (i)
         LIBOR  plus  1.15%,  (ii)  9.50%  and  (iii) the Net Funds Cap for such
         Distribution Date; provided, that if the Class X Certificateholder does
         not  exercise  its  option to  purchase  the  assets of the Trust  Fund
         pursuant to Section  7.01(c) or to purchase  the Class A-1,  Class A-2,
         Class  M-1,  Class M-2 and Class B  Certificates  pursuant  to  Section
         7.01(d) on the first Distribution Date on which it is first entitled to
         do so, with respect to each subsequent  Distribution Date the per annum
         rate calculated pursuant to clause (i) above will be LIBOR plus 1.65%.

(6)      The  Class  X  and  Class  R  Certificates  will be  issued  without  a
         Certificate Principal Amount and will not bear interest.

(7)      The  Class X and Class R  Certificates  will each be issued as a single
         Certificate evidencing the entire Percentage Interest in such Class.


         As of the Cut-off Date, the Mortgage  Loans had an aggregate  Scheduled
Principal Balance of $759,131,604.23.

         In  consideration  of  the  mutual  agreements  herein  contained,  the
Depositor, the Master Servicer and the Trustee hereby agree as follows:


                                   ARTICLE I.

                                   DEFINITIONS

     Section  1.01.  Definitions.  The following  words and phrases,  unless the
context otherwise requires, shall have the following meanings:

         Accepted  Servicing  Practices:  With respect to any Mortgage  Loan, as
applicable,  either (x) those customary mortgage servicing  practices of prudent
mortgage servicing institutions that service or master service mortgage loans of
the same type and quality as such  Mortgage Loan in the  jurisdiction  where the
related Mortgaged  Property is located,  to the extent applicable to the Trustee
or the Master Servicer  (except in its capacity as successor to a Servicer),  or
(y) as provided in the applicable Servicing Agreement,  to the extent applicable
to any Servicer.

     Accountant: A person engaged in the practice of accounting who (except when
this Agreement  provides that an Accountant must be Independent) may be employed
by or affiliated with the Depositor or an Affiliate of the Depositor.

     Accrual  Period:  With  respect to any  Distribution  Date and any Class of
LIBOR Certificates or Fed Funds Certificates,  the one-month period beginning on
the immediately preceding Distribution Date (or on the Closing Date, in the case
of the first  Accrual  Period) and ending on the day  immediately  preceding the
related Distribution Date.

     Additional Collateral: None.

     Adjustable  Rate Mortgage  Loan:  Any Mortgage Loan as to which the related
Mortgage  Note  provides  for the  adjustment  of the Mortgage  Rate  applicable
thereto.

     Adjusted  Overcollateralization  Amount:  With respect to any  Distribution
Date, the amount,  if any, by which (a) the Aggregate Loan Balance as of the end
of the related  Collection Period (reduced to give effect to any Realized Losses
and  Advances of  principal)  exceeds (b) the  aggregate  of the balances of the
Class  T3-4,  Class  T3-5.  Class  T3-6,  and Class  T3-7  Interests  as of such
Distribution  Date (after giving effect to the distribution of principal on such
Regular Interests on such Distribution Date).

     Adjusted   Overcollateralization   Release  Amount:  With  respect  to  any
Distribution  Date, the lesser of (x) the Principal  Remittance  Amount for such
Distribution  Date  and (y)  the  amount,  if any,  by  which  (i) the  Adjusted
Overcollateralization  Amount for such date,  calculated for this purpose on the
basis of the assumption  that 100% of the Principal  Remittance  Amount for such
date is applied on such date in reduction of the principal balances of the Class
T3-4,  Class  T3-5,  Class  T3-6,  and Class T3-7  Interests,  exceeds  (ii) the
Targeted Overcollateralization Amount for such date.

     Advance:  An advance of the aggregate of payments of principal and interest
(net of the Master  Servicing Fee and the  applicable  Servicing  Fee) on one or
more  Mortgage  Loans  that were due on the Due Date in the  related  Collection
Period and not received as of the close of business on the related Determination
Date,  required  to be made  by or on  behalf  of the  Master  Servicer  and any
Servicer (or by the Trustee) pursuant to Section 5.04.

     Affiliate:   With  respect  to  any  specified  Person,  any  other  Person
controlling or controlled by or under common control with such specified Person.
For the  purposes of this  definition,  "control"  when used with respect to any
specified  Person means the power to direct the  management and policies of such
Person,  directly  or  indirectly,  whether  through  the  ownership  of  voting
securities,   by  contract  or  otherwise;   and  the  terms  "controlling"  and
"controlled" have meanings correlative to the foregoing.

     Aggregate Loan Balance:  The aggregate of the Scheduled  Principal Balances
for all Mortgage Loans at the date of determination.

     Aggregate Master Servicing  Compensation:  As to any Distribution Date, the
sum of (x) the  aggregate  of the Master  Servicing  Fees  payable to the Master
Servicer  in  respect  of such  Distribution  Date and (y) all  income  and gain
realized  from the  investment  of funds in the  Collection  Account  during the
period from and  including  the Deposit Date in the calendar  month  immediately
preceding the month in which such Distribution Date occurs, to but excluding the
Deposit Date relating to such Distribution Date.

     Aggregate   Notional  Amount:   With  respect  to  any  Class  of  Notional
Certificates, the applicable aggregate notional amount set forth or described in
the Preliminary Statement hereto.


     Aggregate  Voting  Interests:  The aggregate of the Voting Interests of all
the Certificates under this Agreement.

     Agreement: This Trust Agreement and all amendments and supplements hereto.

     Applied Loss Amount:  With respect to any Distribution Date, the amount, if
any, by which (x) the aggregate Certificate Principal Amount after giving effect
to  distributions  on such date, but before giving effect to any  application of
the Applied Loss Amount on such date,  exceeds (y) the Aggregate Loan Balance as
of the close of the related Collection Period.

     Appraised Value: With respect to any Mortgage Loan, the amount set forth in
an appraisal  made in connection  with the  origination of such Mortgage Loan as
the value of the related Mortgaged Property.

     Aurora:  Aurora  Loan  Services  Inc.,  as  Servicer  under the  applicable
Servicing Agreement.

     Assignment of Mortgage:  An assignment of the Mortgage,  notice of transfer
or equivalent  instrument,  in recordable form, sufficient under the laws of the
jurisdiction  wherein the related  Mortgaged  Property is located to reflect the
sale of the Mortgage to the  Trustee,  which  assignment,  notice of transfer or
equivalent  instrument  may be in the  form of one or more  blanket  assignments
covering the Mortgage Loans secured by Mortgaged  Properties located in the same
jurisdiction, if permitted by law; provided, however, that the Trustee shall not
be  responsible  for  determining  whether any such  assignment is in recordable
form.

     Authenticating  Agent:  Any  authenticating  agent appointed by the Trustee
pursuant to Section 6.10.

     Authorized Officer: Any Person who may execute an Officer's  Certificate on
behalf of the Depositor.

     Balloon  Mortgage  Loan:  Any  Mortgage  Loan  having an  original  term to
maturity that is shorter than its amortization  schedule,  and a final Scheduled
Payment  that is  disproportionately  large in  comparison  to  other  Scheduled
Payments.

     Balloon  Payment:  The final  Scheduled  Payment  in  respect  of a Balloon
Mortgage Loan.

     Bankruptcy:  As to any Person,  the making of an assignment for the benefit
of creditors, the filing of a voluntary petition in bankruptcy,  adjudication as
a bankrupt or  insolvent,  the entry of an order for relief in a  bankruptcy  or
insolvency proceeding, the seeking of reorganization,  arrangement, composition,
readjustment, liquidation, dissolution or similar relief, or seeking, consenting
to or  acquiescing  in the  appointment  of a trustee,  receiver or  liquidator,
dissolution,  or termination, as the case may be, of such Person pursuant to the
provisions of either the United States  Bankruptcy Code of 1986, as amended,  or
any other similar state laws.

     Basis Risk Reserve  Fund: A fund created as part of the Trust Fund pursuant
to  Section  5.08 of this  Agreement  but  which  is not an  asset of any of the
REMICs.

     Basis Risk Shortfall:  With respect to any Distribution  Date and any Class
of LIBOR  Certificates,  the  amount  by which  the  Certificate  Interest  Rate
applicable  to such Class for such date,  determined  without  regard to the Net
Funds Cap for such date, exceeds such Net Funds Cap.

     Benefit Plan Opinion: An Opinion of Counsel  satisfactory to the Trustee to
the effect that any proposed transfer will not (i) cause the assets of the Trust
Fund to be regarded as plan assets for purposes of the Plan Asset Regulations or
(ii)  give  rise to any  fiduciary  duty on the  part  of the  Depositor  or the
Trustee.

     Blanket  Mortgage:  The mortgage or  mortgages  encumbering  a  Cooperative
Property.

     Book-Entry Certificates: Beneficial interests in Certificates designated as
"Book-Entry  Certificates"  in this Agreement,  ownership and transfers of which
shall be  evidenced  or made  through  book  entries  by a  Clearing  Agency  as
described in Section 3.09;  provided,  that after the  occurrence of a condition
whereupon  book-entry  registration  and  transfer are no longer  permitted  and
Definitive  Certificates are to be issued to Certificate Owners, such Book-Entry
Certificates  shall no longer be  "Book-Entry  Certificates."  As of the Closing
Date, the following Classes of Certificates constitute Book-Entry  Certificates:
the Class A-1, Class A-2, Class M-1, Class M-2 and Class B Certificates.

     Business Day: Any day other than (i) a Saturday or a Sunday,  (ii) a day on
which banking institutions in New York, New York or, if other than New York, the
city in which the Corporate Trust Office of the Trustee is located, or the State
of  Maryland,  or (iii) with  respect  to any  Remittance  Date or any  Servicer
reporting date, the States  specified in the definition of "Business Day" in the
applicable Servicing Agreement,  are authorized or obligated by law or executive
order to be closed.

     Carryforward Interest: With respect to any Distribution Date and each Class
of Class A-1, Class A-2, Class M-1, Class M-2 and Class B Certificates,  the sum
of (i) the amount, if any, by which (x) the sum of (A) Current Interest for such
Class  for the  immediately  preceding  Distribution  Date  and  (B) any  unpaid
Carryforward  Interest for such Class from previous  Distribution  Dates exceeds
(y) the  amount  distributed  in  respect  of  interest  on such  Class  on such
immediately  preceding  Distribution  Date, and (ii) interest on such amount for
the related Accrual Period at the applicable Certificate Interest Rate.

     Certificate:  Any one of the certificates  signed and  countersigned by the
Trustee in substantially the forms attached hereto as Exhibit A.

     Certificate  Account:  The account  maintained by the Trustee in accordance
with the provisions of Section 4.04.

     Certificate Interest Rate: With respect to each Class of Certificates,  the
applicable  per annum rate set forth or described in the  Preliminary  Statement
hereto.

     Certificate Owner: With respect to a Book-Entry Certificate, the Person who
is the 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).

     Certificate  Principal Amount: With respect to any Certificate other than a
Class  X or  Class R  Certificate  or a  Notional  Certificate,  at the  time of
determination,  the maximum  specified  dollar  amount of principal to which the
Holder  thereof is then  entitled  hereunder,  such  amount  being  equal to the
initial  principal  amount set forth on the face of such  Certificate,  less the
amount of all  principal  distributions  previously  made with  respect  to such
Certificate  and  all  Applied  Loss  Amounts   previously   allocated  to  such
Certificate.

     Certificate Register and Certificate Registrar: The register maintained and
the registrar appointed pursuant to Section 3.02.

     Certificateholder: The meaning provided in the definition of "Holder."

     Class: All Certificates bearing the same class designation.

     Class B Principal  Distribution  Amount:  With respect to any  Distribution
Date on or after  the  Stepdown  Date  and as long as a  Trigger  Event  has not
occurred with respect to such  Distribution  Date, the amount,  if any, by which
(x) the sum of (i) the Class  Certificate  Principal  Amounts  of the Class A-1,
Class  A-2,  Class  M-1 and  Class  M-2  Certificates  after  giving  effect  to
distributions on such Distribution Date and (ii) the Class Certificate Principal
Amount of the Class B Certificates  immediately  prior to such Distribution Date
exceeds (y) the lesser of (A) the  product of (i) 96.04% and (ii) the  Aggregate
Loan  Balance as of the last day of the  related  Collection  Period and (B) the
amount,  if any, by which (i) the  Aggregate  Loan Balance as of the last day of
the related Collection Period exceeds (ii) $5,693,487.03.

     Class  Certificate   Principal  Amount:  With  respect  to  each  Class  of
Certificates  other than the Class X and Class R  Certificates  and any Class of
Notional Certificates, the aggregate of the Certificate Principal Amounts of all
Certificates of such Class at the date of determination.

     Class M-1 Principal  Distribution  Amount: With respect to any Distribution
Date on or after  the  Stepdown  Date  and as long as a  Trigger  Event  has not
occurred with respect to such  Distribution  Date, the amount,  if any, by which
(x) the sum of (i) the Class  Certificate  Principal Amount of the Class A-1 and
Class A-2 Certificates after giving effect to distributions on such Distribution
Date  and  (ii)  the  Class  Certificate  Principal  Amount  of  the  Class  M-1
Certificates  immediately prior to such Distribution Date exceeds (y) the lesser
of (A) the product of (i) 65.10% and (ii) the  Aggregate  Loan Balance as of the
last day of the related  Collection  Period and (B) the amount, if any, by which
(i) the  Aggregate  Loan  Balance as of the last day of the  related  Collection
Period exceeds (ii) $5,693,487.03.

     Class M-2 Principal  Distribution  Amount: With respect to any Distribution
Date on or after  the  Stepdown  Date  and as long as a  Trigger  Event  has not
occurred with respect to such  Distribution  Date, the amount,  if any, by which
(x) the sum of (i) the Class  Certificate  Principal  Amounts  of the Class A-1,
Class A-2 and Class M-1  Certificates  after giving effect to  distributions  on
such Distribution  Date and (ii) the Class  Certificate  Principal Amount of the
Class M-2 Certificates  immediately  prior to such Distribution Date exceeds (y)
the lesser of (A) the product of (i) 89.24% and (ii) the Aggregate  Loan Balance
as of the last day of the related  Collection Period and (B) the amount, if any,
by which  (i) the  Aggregate  Loan  Balance  as of the  last day of the  related
Collection Period exceeds (ii) $5,693,487.03.

     Class R Certificate:  The Class R Certificate  executed by the Trustee, and
authenticated and delivered by the Certificate  Registrar,  substantially in the
form annexed  hereto as Exhibit A-3 and evidencing the ownership of the Class R1
Interest,  the  Class R2  Interest,  the  Class R3  Interest,  and the  Class R4
Interest.

     Class R1 Interest: The uncertificated Residual Interest in REMIC 1.

     Class R2 Interest: The uncertificated Residual Interest in REMIC 2.

     Class R3 Interest: The uncertificated Residual Interest in REMIC 3.

     Class R4 Interest: The uncertificated Residual Interest in REMIC 4.

     Class  T1-1  Interest:  A regular  interest  in REMIC 1 held as an asset of
REMIC 2 that has an initial  principal  balance equal to 98% of the Cut-off Date
Aggregate  Loan  Balance,  bears  interest  at a per annum rate equal to the Net
Funds Cap and has such other terms as are described in Section 5.06.

     Class  T1-2  Interest:  A regular  interest  in REMIC 1 held as an asset of
REMIC 2 that has an initial  principal  balance  equal to 1% of the Cut-off Date
Aggregate  Loan  Balance,  bears  interest  at a per annum rate equal to the Net
Funds Cap and has such other terms as are described in Section 5.06.

     Class  T1-3  Interest:  A regular  interest  in REMIC 1 held as an asset of
REMIC 2 that has an initial  principal  balance  equal to 1% of the Cut-off Date
Aggregate  Loan  Balance,  bears  interest  at a per annum rate equal to the Net
Funds Cap and has such other terms as are described in Section 5.06.

     Class  T2-1  Interest:  A regular  interest  in REMIC 2 held as an asset of
REMIC 3 that has an initial  principal  balance equal to 98% of the Cut-off Date
Aggregate  Loan  Balance,  bears  interest  at a per annum rate equal to the Net
Funds Cap and has such other terms as are described in Section 5.06.

     Class  T2-2  Interest:  A regular  interest  in REMIC 2 held as an asset of
REMIC 3 that has an initial  principal  balance  equal to 1% of the Cut-off Date
Aggregate Loan Balance, bears interest at a per annum rate equal to the Standard
Rate and has such other terms as are described in Section 5.06.

     Class  T2-3  Interest:  A regular  interest  in REMIC 2 held as an asset of
REMIC 3 that has an initial  principal  balance  equal to 1% of the Cut-off Date
Aggregate  Loan  Balance,  bears  interest  at a per annum rate equal to the Net
Funds Cap and has such other terms as are described in Section 5.06.

     Class  T2-4  Interest:  A regular  interest  in REMIC 2 held as an asset of
REMIC 3 that is  entitled  to 100% of the  interest  accruals  on the Class T1-2
Interest  in  excess  of the  Standard  Rate  and has  such  other  terms as are
described  in Section  5.06  hereof.  The Class T2-4  Interest  shall not have a
principal balance.

     Class T3-1 Distributable  Amount: With respect to any Distribution Date, an
amount  equal to the product of (i) a fraction,  the  numerator  of which is the
number of days in the related  Accrual  Period and the  denominator  of which is
360, (ii) the Class T3-1 Notional Balance immediately prior to such Distribution
Date and (iii) the Class T3-1 Pass-Through Rate.

     Class  T3-1  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that has such terms as are described in Section 5.06.

     Class T3-1 Notional Balance:  A notional  principal balance equal as of any
date to the sum of the principal  balances of the Class T2-1 and T2-3  Interests
for such date.

     Class T3-1 Pass-Through  Rate: With respect to any Distribution Date, a per
annum  rate equal to the excess of (i) the Net Funds Cap for such date over (ii)
the product of (x) two and (y) a fraction, the numerator of which is the product
of the  Standard  Rate and the  principal  balance  of the Class  T2-2  Interest
immediately  prior to such Distribution Date and the denominator of which is the
sum of the  principal  balances  of the  Class  T2-2 and  Class  T2-3  Interests
immediately prior to such Distribution Date.

     Class T3-2 Distributable  Amount: With respect to any Distribution Date, an
amount  equal to the product of (i) a fraction,  the  numerator  of which is the
number of days in the related  Accrual  Period and the  denominator  of which is
360, (ii) the Class T3-2 Notional Balance immediately prior to such Distribution
Date and (iii) the Class T3-2 Pass-Through Rate.

     Class  T3-2  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that has such terms as are described in Section 5.06.

     Class T3-2 Notional Balance:  A notional  principal balance equal as of any
date to the principal balance of the Class T2-2 Interest for such date.

     Class T3-2 Pass-Through  Rate: With respect to any Distribution Date, a per
annum rate equal to the excess of (i) the Standard Rate over (ii) the product of
(x) two and (y) a  fraction,  the  numerator  of  which  is the  product  of the
Standard Rate and the principal  balance of the Class T2-2 Interest  immediately
prior to such  Distribution  Date and the denominator of which is the sum of the
principal balances of the Class T2-2 and Class T2-3 Interests  immediately prior
to such Distribution Date.

     Class T3-3 Distributable  Amount: With respect to any Distribution Date, an
amount equal to the amount  distributable  in respect of the Class T2-4 Interest
for such date.

     Class  T3-3  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that is entitled to the Class T3-3 Distributable Amount.

     Class  T3-4  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that has an initial  principal balance of $313,331,000 as of the Cut-off
Date,  bears  interest  at the  Standard  Rate and has such  other  terms as are
described in Section 5.06.

     Class  T3-5  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that has an initial  principal balance of $313,331,000 as of the Cut-off
Date,  bears  interest  at the  Standard  Rate and has such  other  terms as are
described in Section 5.06.

     Class  T3-6  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that has an initial  principal  balance of $62,173,000 as of the Cut-off
Date,  bears  interest  at the  Standard  Rate and has such  other  terms as are
described in Section 5.06.

     Class  T3-7  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that has an initial  principal  balance of $29,454,000 as of the Cut-off
Date,  bears  interest  at the  Standard  Rate and has such  other  terms as are
described in Section 5.06.

     Class  T3-8  Interest:  A regular  interest  in REMIC 3 held as an asset of
REMIC 4 that has an initial  principal  balance of $25,810,000 as of the Cut-off
Date and bears  interest  at the  Standard  Rate and has such other terms as are
described in Section 5.06.

     Class  T4-1  Interest:  A regular  interest  in REMIC 4 that has an initial
principal  balance of  $313,331,000 as of the Cut-off Date and bears interest at
the Class A-1 Certificate Interest Rate. Ownership of the Class T4-1 Interest is
evidenced by the Class A-1 Certificates.

     Class  T4-2  Interest:  A regular  interest  in REMIC 4 that has an initial
principal  balance of  $313,331,000 as of the Cut-off Date and bears interest at
the Class A-2 Certificate Interest Rate. Ownership of the Class T4-2 Interest is
evidenced by the Class A-2 Certificates.

     Class  T4-3  Interest:  A regular  interest  in REMIC 4 that has an initial
principal  balance of  $62,173,000  as of the Cut-off Date and bears interest at
the Class M-1 Certificate Interest Rate. Ownership of the Class T4-3 Interest is
evidenced by the Class M-1 Certificates.

     Class  T4-4  Interest:  A regular  interest  in REMIC 4 that has an initial
principal  balance of  $29,454,000  as of the Cut-off Date and bears interest at
the Class M-2 Certificate Interest Rate. Ownership of the Class T4-4 Interest is
evidenced by the Class M-2 Certificates.

     Class  T4-5  Interest:  A regular  interest  in REMIC 4 that has an initial
principal  balance of  $25,810,000  as of the Cut-off Date and bears interest at
the Class B Certificate  Interest Rate.  Ownership of the Class T4-4 Interest is
evidenced by the Class B Certificates.

     Class T4-6 Interest: A regular interest in REMIC 4 that is entitled to 100%
of the interest  accruals on the Class T3-4  Interest in excess of the Class A-1
Certificate  Interest  Rate.  The Class T4-6 Interest shall not have a principal
balance.  Ownership  of the Class  T4-6  Interest  is  evidenced  by the Class X
Certificate.

     Class T4-7 Interest: A regular interest in REMIC 4 that is entitled to 100%
of the interest  accruals on the Class T3-5  Interest in excess of the Class A-2
Certificate  Interest  Rate.  The Class T4-7 Interest shall not have a principal
balance.  Ownership  of the Class  T4-7  Interest  is  evidenced  by the Class X
Certificate.

     Class T4-8 Interest: A regular interest in REMIC 4 that is entitled to 100%
of the interest  accruals on the Class T3-6  Interest in excess of the Class M-1
Certificate  Interest  Rate.  The Class T4-8 Interest shall not have a principal
balance.  Ownership  of the Class  T4-8  Interest  is  evidenced  by the Class X
Certificate.

     Class T4-9 Interest: A regular interest in REMIC 4 that is entitled to 100%
of the interest  accruals on the Class T3-7  Interest in excess of the Class M-2
Certificate  Interest  Rate.  The Class T4-9 Interest shall not have a principal
balance.  Ownership  of the Class  T4-9  Interest  is  evidenced  by the Class X
Certificate.

     Class T4-10 Distributable Amount: With respect to any Distribution Date, an
amount equal to the sum of the Class T3-1  Distributable  Amount, the Class T3-2
Distributable Amount and the Class T3-3 Distributable Amount for such date.

     Class  T4-10  Interest:  A regular  interest in REMIC 4 that is entitled to
100% of the T4-10 Distributable Amount. Ownership of the Class T4-10 Interest is
evidenced by the Class X Certificate.

     Class X Distributable  Amount:  With respect to any Distribution  Date, the
aggregate  of the amounts  distributable  on the Class T4-6,  Class T4-7,  Class
T4-8, Class T4-9, and Class T4-10 Interests on such date.

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

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

     Closing Date: April 30, 1998.

     Code:  The  Internal  Revenue  Code of 1986,  as amended,  and as it may be
further  amended  from  time  to  time,  any  successor  statutes  thereto,  and
applicable U.S.  Department of Treasury  regulations  issued pursuant thereto in
temporary or final form.

     Collection  Account:  A separate account  established and maintained by the
Master Servicer pursuant to Section 4.01.

     Collection  Period:  With  respect  to any  Distribution  Date,  the period
commencing  on the second day of the month  immediately  preceding  the month in
which such  Distribution Date occurs and ending on the first day of the month in
which such Distribution Date occurs.

     Compensating  Interest Payment:  With respect to any Distribution  Date, an
amount  equal to the  excess of (x) the  aggregate  of any  Prepayment  Interest
Shortfalls with respect to such  Distribution Date over (y) the aggregate of any
amounts  required to be paid by the Servicers in respect of such  shortfalls but
not paid;  provided,  that such  amount  shall not exceed the  Aggregate  Master
Servicing  Compensation  that would be payable to the Master Servicer in respect
of such  Distribution  Date without giving effect to any  Compensating  Interest
Payment.

     Conventional Loan: A Mortgage Loan that is not insured by the United States
Federal  Housing  Administration  or guaranteed  by the United  States  Veterans
Administration.

     Converted Mortgage Loan: None.

     Convertible Mortgage Loan: None.

     Cooperative Corporation:  The entity that holds title (fee or an acceptable
leasehold  estate)  to the  real  property  and  improvements  constituting  the
Cooperative  Property  and  which  governs  the  Cooperative   Property,   which
Cooperative  Corporation must qualify as a Cooperative Housing Corporation under
Section 216 of the Code.

     Cooperative  Loan:  Any Mortgage Loan secured by  Cooperative  Shares and a
Proprietary Lease.

     Cooperative Loan Documents: As to any Cooperative Loan, (i) the Cooperative
Shares,  together  with a stock  power  in  blank;  (ii) the  original  executed
Security  Agreement  and the  assignment of the Security  Agreement  endorsed in
blank;  (iii) the original executed  Proprietary Lease and the assignment of the
Proprietary  Lease  endorsed in blank;  (iv) the original  executed  Recognition
Agreement  and  the  assignment  of  the  Recognition  Agreement  (or a  blanket
assignment of all Recognition  Agreements)  endorsed in blank;  (v) the executed
UCC-1  financing  statement with evidence of recording  thereon,  which has been
filed in all places required to perfect the security interest in the Cooperative
Shares and the Proprietary  Lease; and (vi) executed UCC-3 financing  statements
(or copies thereof) or other  appropriate UCC financing  statements  required by
state law,  evidencing a complete and  unbroken  line from the  mortgagee to the
Trustee  with  evidence  of  recording  thereon  (or  in  a  form  suitable  for
recordation).

     Cooperative  Property:  The real  property  and  improvements  owned by the
Cooperative  Corporation,  that includes the  allocation of individual  dwelling
units to the holders of the Cooperative Shares of the Cooperative Corporation.

     Cooperative Shares: Shares issued by a Cooperative Corporation.

     Cooperative  Unit:  A  single  family  dwelling  located  in a  Cooperative
Property.

     Corporate Trust Office: The principal corporate trust office of the Trustee
at  which,  at any  particular  time,  its  corporate  trust  business  shall be
administered,  which  office at the date  hereof is located  at 230 South  Tryon
Street NC1179, Charlotte, North Carolina 28288, Attention: Structured Finance.

     Current Interest: With respect to each Class of Class A-1, Class A-2, Class
M-1, Class M-2 and Class B Certificates and any Distribution Date, the aggregate
amount of interest  accrued during the related  Accrual Period at the applicable
Certificate  Interest  Rate on the Class  Certificate  Principal  Amount of such
Class immediately prior to such Distribution Date

     Custodial Agreement:  The custodial agreement attached as Exhibit K hereto,
and any custodial agreement  subsequently  executed by the Trustee substantially
in the form thereof.

     Custodian:  Each custodian appointed by the Trustee pursuant to a Custodial
Agreement, and any successor thereto.

     Cut-off Date: April 1, 1998.

     Cut-off Date Aggregate Loan Balance:  With respect to the Mortgage Loans in
the Trust Fund on the Closing Date, the Aggregate Loan Balance as of the Cut-off
Date.

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

     Deferred Amount:  With respect to any  Distribution  Date and each Class of
Subordinate  Certificates,  the  aggregate of Applied  Loss  Amounts  previously
applied in reduction of the Class Certificate Principal Amount thereof, less any
amounts previously reimbursed in respect thereof.

     Deferred  Interest:  With  respect  to any Class of  Negative  Amortization
Certificates  and any  Distribution  Date,  the  lesser  of (x)  the  applicable
Interest  Distribution  Amount  for such  date  (without  giving  effect  to any
Deferred Interest) and (y) the aggregate Mortgage Loan Negative Amortization, if
any, for the related Collection Period.

     Definitive  Certificate:  A Certificate  of any Class issued in definitive,
fully registered, certificated form.

     Deleted  Mortgage Loan: A Mortgage Loan that is repurchased  from the Trust
Fund  pursuant  to the  terms  hereof  or as to  which  one or  more  Qualifying
Substitute Mortgage Loans are substituted therefor.

     Deposit  Date:  With respect to each  Distribution  Date,  the Business Day
immediately preceding such Distribution Date.

     Depositor:  Structured Asset Securities Corporation, a Delaware corporation
having  its  principal  place of  business  in New York,  or its  successors  in
interest.

     Determination Date: With respect to each Distribution Date, the 18th day of
the month in which such Distribution Date occurs,  or, if such 18th day is not a
Business Day, the next succeeding Business Day.

     Directing Holder: As defined in the Special Servicing Agreement.

     Directing  Holder  Servicing Fee:  Amounts payable to the Directing  Holder
under Section 5.07 of this Agreement.

     Disqualified Organization:  Either (i) the United States, (ii) any state or
political   subdivision  thereof,   (iii)  any  foreign  government,   (iv)  any
international  organization,  (v) any  agency or  instrumentality  of any of the
foregoing,  (vi) any tax-exempt organization (other than a cooperative described
in section 521 of the Code) which is exempt from the tax imposed by Chapter 1 of
the Code unless such  organization  is subject to the tax imposed by section 511
of the Code,  (vii) any organization  described in section  1381(a)(2)(C) of the
Code, or (viii) any other entity  designated as a Disqualified  Organization  by
relevant  legislation amending the REMIC Provisions and in effect at or proposed
to be effective as of the time of the determination.  In addition, a corporation
will not be treated as an  instrumentality  of the United States or of any state
or political  subdivision  thereof if all of its  activities  are subject to tax
and,  with the  exception  of the  Federal  Home Loan  Mortgage  Corporation,  a
majority of its board of directors is not selected by such governmental unit.

     Distribution Date: The 25th day of each month or, if such 25th day is not a
Business Day, the next succeeding Business Day, commencing in May 1998.

     Due Date:  With respect to any Mortgage Loan, the date on which a Scheduled
Payment is due under the related Mortgage Note.

     Eligible  Account:  Either  (i) an account or  accounts  maintained  with a
federal or state chartered depository institution or trust company acceptable to
the Rating  Agencies  or (ii) an account or accounts  the  deposits in which are
insured by the FDIC to the limits established by such corporation, provided that
any  such  deposits  not so  insured  shall be  maintained  in an  account  at a
depository  institution or trust company whose  commercial  paper or other short
term debt  obligations  (or, in the case of a  depository  institution  or trust
company which is the principal  subsidiary of a holding company,  the commercial
paper or other short term debt or deposit obligations of such holding company or
depository  institution,  as the  case may be) have  been  rated by each  Rating
Agency in its highest  short-term  rating category,  or (iii) a segregated trust
account or accounts (which shall be a "special deposit account") maintained with
the Trustee or any other federal or state  chartered  depository  institution or
trust company,  acting in its fiduciary capacity,  in a manner acceptable to the
Trustee and the Rating Agencies. Eligible Accounts may bear interest.

     Eligible  Investments:  Any  one or more of the  following  obligations  or
securities:

          (i) direct  obligations  of, and  obligations  fully  guaranteed as to
          timely  payment of principal  and  interest  by, the United  States of
          America  or any  agency or  instrumentality  of the  United  States of
          America  the  obligations  of which are  backed by the full  faith and
          credit of the United States of America ("Direct Obligations");

          (i) federal  funds,  or demand and time deposits in,  certificates  of
deposits of, or bankers'  acceptances  issued by, any depository  institution or
trust company  (including  U.S.  subsidiaries  of foreign  depositories  and the
Trustee  or any  agent  of the  Trustee,  acting  in its  respective  commercial
capacity)  incorporated  or  organized  under the laws of the  United  States of
America or any state  thereof  and subject to  supervision  and  examination  by
federal or state  banking  authorities,  so long as at the time of investment or
the contractual commitment providing for such investment the commercial paper or
other  short-term  debt  obligations  of such  depository  institution  or trust
company (or, in the case of a depository  institution  or trust company which is
the principal  subsidiary of a holding  company,  the commercial  paper or other
short-term  debt or  deposit  obligations  of such  holding  company  or deposit
institution,  as the case may be) have been rated by each  Rating  Agency in its
highest  short-term  rating category or one of its two highest  long-term rating
categories;

          (ii)  repurchase agreements collateralized by  Direct  Obligations  or
securities  guaranteed by GNMA, FNMA or FHLMC with any registered  broker/dealer
subject to Securities  Investors'  Protection  Corporation  jurisdiction  or any
commercial  bank  insured  by the  FDIC,  if such  broker/dealer  or bank has an
uninsured,  unsecured and unguaranteed obligation rated by each Rating Agency in
its highest  short-term  rating category;

          (iii)  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 have a credit rating from each Rating Agency, at the time of
investment or the contractual commitment providing for such investment, at least
equal to one of the two  highest  long-term  credit  rating  categories  of each
Rating  Agency;  provided,  however,  that  securities  issued by any particular
corporation  will not be  Eligible  Investments  to the extent  that  investment
therein will cause the then outstanding principal amount of securities issued by
such  corporation and held as part of the Trust Fund to exceed 20% of the sum of
the Aggregate  Loan Balance and the aggregate  principal  amount of all Eligible
Investments in the Certificate Account; provided,  further, that such securities
will not be Eligible  Investments  if they are  published  as being under review
with negative  implications  from either Rating  Agency;

     (v) commercial  paper  (including both  non-interest-bearing  discount
     obligations and interest-bearing obligations payable on demand or on a
     specified  date not more  than 180  days  after  the date of  issuance
     thereof) rated by each Rating Agency in its highest  short-term rating
     category;

          (iv) a Qualified GIC;

          (v) certificates  or  receipts representing direct ownership interests
in future interest or principal  payments on obligations of the United States of
America or its agencies or  instrumentalities  (which  obligations are backed by
the full faith and credit of the United  States of America)  held by a custodian
in  safekeeping  on behalf of the holders of such  receipts;  and (vi) any other
demand,  money  market,  common  trust fund or time  deposit or  obligation,  or
interest-bearing  or other  security  or  investment,  (A) rated in the  highest
rating category by each Rating Agency or (B) that would not adversely affect the
then  current  rating  by  either  Rating  Agency  of any  of the  Certificates;

provided,  however,  that no such instrument shall 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  principal  and  interest  payments  with  respect  to such
instrument  provide a yield to  maturity  of  greater  than 120% of the yield to
maturity  at  par  of  such  underlying  obligations,  provided  that  any  such
investment  will be a  "permitted  investment"  within  the  meaning  of Section
860G(a)(5) of the Code.

     ERISA-Restricted Certificate: Any Subordinate Certificate.

     Escrow  Account:  Any account  established and maintained by the applicable
Servicer pursuant to the applicable Servicing Agreement.

     Event of Default: Any one of the conditions or circumstances  enumerated in
Section 6.14(a).

     Extra Principal Distribution Amount: With respect to any Distribution Date,
the lesser of (a) Monthly Excess Interest for such Distribution Date and (b) the
Overcollateralization Deficiency for such date.

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

     Fed Funds Average Rate:  With respect to each Accrual Period other than the
initial Accrual Period, the fraction,  expressed as a percentage,  the numerator
of which will be equal to the sum of each day's Fed Funds  Rate,  determined  as
provided in Section 4.06, during the applicable Fed Funds Calculation Period and
the  denominator  of which will be equal to the number of days in such Fed Funds
Calculation Period.

     Fed Funds Business Day: Any day other than a Saturday or Sunday or a day on
which banking institutions in New York, New York are closed.

     Fed Funds  Calculation  Period:  With respect to each Accrual  Period other
than the  initial  Accrual  Period,  the period  commencing  the 19th day of the
calendar month immediately preceding the month in which the related Distribution
Date  occurs  and  ending  on the 18th day of the  month  in which  the  related
Distribution Date occurs.

     Fed Funds Certificate: Any Class A-1 Certificate.

     FHLMC:   The  Federal   Home  Loan   Mortgage   Corporation,   a  corporate
instrumentality of the United States created and existing under Title III of the
Emergency Home Finance Act of 1970, as amended, or any successor thereto.

     Final Scheduled Distribution Date: June 25, 2028.

     Financial   Intermediary:   A  broker,  dealer,  bank  or  other  financial
institution  or other  Person  that  clears  through or  maintains  a  custodial
relationship with a Clearing Agency Participant.

     FNMA: The Federal National Mortgage Association,  a federally chartered and
privately owned  corporation  organized and existing under the Federal  National
Mortgage Association Charter Act, or any successor thereto.

     GNMA:  The  Government  National  Mortgage  Association,   a  wholly  owned
corporate instrumentality of the United States within HUD.

     Holder or  Certificateholder:  The registered  owner of any  Certificate as
recorded on the books of the Certificate  Registrar except that,  solely for the
purposes of taking any action or giving any consent  pursuant to this Agreement,
any Certificate registered in the name of the Depositor, the Trustee, the Master
Servicer,  any  Servicer  or any  Affiliate  thereof  shall be deemed  not to be
outstanding in determining whether the requisite  percentage necessary to effect
any such consent has been  obtained,  except that,  in  determining  whether the
Trustee shall be protected in relying upon any such consent,  only  Certificates
which a  Responsible  Officer  of the  Trustee  knows  to be so  owned  shall be
disregarded.  The Trustee may request and conclusively rely on certifications by
the Depositor,  the Master Servicer and any Servicer in determining  whether any
Certificates  are  registered  to an  Affiliate  of the  Depositor,  the  Master
Servicer or such Servicer.

     HUD: The United States Department of Housing and Urban Development,  or any
successor thereto.

     Independent:  When used with  respect to any  Accountants,  a Person who is
"independent"  within the meaning of Rule 2-01(b) of the Securities and Exchange
Commission's  Regulation  S-X.  When used with  respect to any other  Person,  a
Person  who (a) is in fact  independent  of  another  specified  Person  and any
Affiliate of such other Person,  (b) does not have any material direct financial
interest in such other Person or any Affiliate of such other Person,  and (c) is
not connected with such other Person or any Affiliate of such other Person as an
officer, employee, promoter,  underwriter,  trustee, partner, director or Person
performing similar functions.

     Index:  The index specified in the related Mortgage Note for calculation of
the Mortgage Rate thereof.

     Initial LIBOR Rate: [[5.75]]%.

     Initial Fed Funds Average Rate: [6.39]%.

     Insurance  Policy:  Any Primary Mortgage  Insurance Policy and any standard
hazard insurance policy, flood insurance policy,  earthquake insurance policy or
title  insurance  policy  relating  to  the  Mortgage  Loans  or  the  Mortgaged
Properties, to be in effect as of the Closing Date or thereafter during the term
of this Agreement.

     Insurance Proceeds: Amounts paid by the insurer under any Insurance Policy,
other  than  amounts  to be  applied  to  restoration  or repair of the  related
Mortgaged  Property or required to be paid over to the Mortgagor pursuant to law
or the related Mortgage Note.

     Interest Distribution Amount: Not applicable.

     Interest  Remittance Amount: With respect to any Distribution Date, the sum
of (i) all interest  collected  (other than Payaheads) or advanced in respect of
Scheduled Payments on the Mortgage Loans,  including any prepayment  premiums or
penalties,  during the related  Collection Period (less (x) the Master Servicing
Fee and the  applicable  Servicing Fee and (y)  unreimbursed  Advances and other
amounts due to the Master Servicer,  the Servicers or the Trustee, to the extent
allocable to interest),  (ii) any amounts paid by the Servicers  with respect to
Prepayment  Interest  Shortfalls  and any  Compensating  Interest  Payment  with
respect to the related Prepayment Period,  (iii) the portion of any Substitution
Amount paid during the related  Prepayment Period allocable to interest and (iv)
all Net Liquidation Proceeds,  Insurance Proceeds and other recoveries collected
during the related  Prepayment  Period, to the extent allocable to interest,  as
reduced in each case by unreimbursed interest Advances and other amounts due the
Master  Servicer,  the  Servicers  or the  Trustee,  to the extent  allocable to
interest.

     Intervening  Assignments:  The  original  intervening  assignments  of  the
Mortgage, notice of transfer or equivalent instrument.

     Latest Possible Maturity Date: June 25, 2030.

     Lehman  Capital:  Lehman Capital,  A Division of Lehman  Brothers  Holdings
Inc., or any successor in interest.

     LIBOR: The per annum rate determined  pursuant to Section 4.05 on the basis
of London interbank offered rate quotations for one-month  Eurodollar  deposits,
as such quotations may appear on the display designated as page "LIUS01M" on the
Bloomberg  Financial Markets Commodities News (or such other page as may replace
such page on that service for the purpose of displaying London interbank offered
quotations of major banks).

     LIBOR  Certificate:  Any  Class  A-2,  Class  M-1,  Class  M-2 or  Class  B
Certificate.

     LIBOR  Determination  Date:  The second  London  Business  Day  immediately
preceding the commencement of each Accrual Period for any LIBOR Certificates.

     Liquidated  Mortgage  Loan:  Any  defaulted  Mortgage  Loan as to which the
Master Servicer or the applicable  Servicer has determined that all amounts that
it  expects  to  recover  on behalf of the Trust Fund from or on account of such
Mortgage Loan have been recovered.

     Liquidation Expenses:  Expenses that are incurred by the Master Servicer or
a Servicer in connection with the liquidation of any defaulted Mortgage Loan and
are not recoverable  under the applicable  Primary  Mortgage  Insurance  Policy,
including,  without limitation,  foreclosure and rehabilitation  expenses, legal
expenses and unreimbursed  amounts  expended  pursuant to Sections 9.06, 9.16 or
9.22.

     Liquidation Proceeds: Cash received in connection with the liquidation of a
defaulted Mortgage Loan, whether through the sale or assignment of such Mortgage
Loan, trustee's sale, foreclosure sale or otherwise,  or the sale of the related
Mortgaged  Property if the Mortgaged Property is acquired in satisfaction of the
Mortgage Loan, including any amounts remaining in the related Escrow Account.

     Loan-to-Value  Ratio:  With respect to any Mortgage  Loan, the ratio of the
principal balance of such Mortgage Loan at origination, or such other date as is
specified, to the Original Value thereof.

     London Business Day: Any day on which banks are open for dealing in foreign
currency and exchange in London, England and New York City.

     Maintenance:  With respect to any Cooperative Unit, the rent or fee paid by
the Mortgagor to the Cooperative Corporation pursuant to the Proprietary Lease.

     Master  Servicer:  Norwest Bank  Minnesota,  National  Association,  or any
successor in interest, or if any successor master servicer shall be appointed as
herein provided, then such successor master servicer.

     Master Servicing Fee: As to any  Distribution  Date and each Mortgage Loan,
an  amount  equal  to the  product  of the  Master  Servicing  Fee  Rate and the
outstanding  principal  balance of such Mortgage Loan as of the first day of the
related  Collection Period. The Master Servicing Fee for any Mortgage Loan shall
be payable in respect of any Distribution  Date solely from the interest portion
of the  Scheduled  Payment or other  payment or  recovery  with  respect to such
Mortgage Loan.

     Master Servicing Fee Rate: 0.0075% per annum.

     Material Defect: As defined in Section 2.02(c) hereof.

     Monthly Excess Cashflow:  With respect to any Distribution Date, the sum of
(x)  Monthly  Excess  Interest  for such date and (y) the  Overcollateralization
Release Amount for such date.

     Monthly Excess Interest:  With respect to any Distribution Date, the amount
of any  Interest  Remittance  Amount  remaining  after  application  pursuant to
clauses (i) through (v) of Section 5.02(b) on such date.

     Mortgage: A mortgage,  deed of trust or other instrument  encumbering a fee
simple  interest  in real  property  securing a  Mortgage  Note,  together  with
improvements thereto.

     Mortgage File: The mortgage  documents listed in Section 2.01(b) pertaining
to a particular  Mortgage Loan required to be delivered to the Trustee  pursuant
to this Agreement.

     Mortgage  Loan:  A Mortgage  and the related  notes or other  evidences  of
indebtedness secured by each such Mortgage conveyed, transferred, sold, assigned
to or  deposited  with the  Trustee  pursuant to Section  2.01 or Section  2.05,
including  without  limitation,  each  Mortgage Loan listed on the Mortgage Loan
Schedule, as amended from time to time.

     Mortgage Loan Negative Amortization: Not applicable.

     Mortgage Loan Sale Agreement: The agreement, dated as of April 1, 1998, for
the sale of the Mortgage Loans by Lehman Capital,  A Division of Lehman Brothers
Holdings Inc., to the Depositor.

     Mortgage Loan Schedule:  The schedule  attached hereto as Schedule A, which
shall  identify each Mortgage Loan, as such schedule may be amended from time to
time to reflect the  addition of Mortgage  Loans to, or the deletion of Mortgage
Loans from, the Trust Fund.

     Mortgage  Note:  The  note  or  other  evidence  of the  indebtedness  of a
Mortgagor secured by a Mortgage under a Mortgage Loan.

     Mortgage  Rate:  As to any  Mortgage  Loan,  the per  annum  rate at  which
interest accrues on such Mortgage Loan.

     Mortgaged Property: Either of (x) the fee simple interest in real property,
together with  improvements  thereto  including any exterior  improvements to be
completed within 120 days of disbursement of the related Mortgage Loan proceeds,
or (y) in the case of a Cooperative  Loan,  the related  Cooperative  Shares and
Proprietary Lease,  securing the indebtedness of the Mortgagor under the related
Mortgage Loan.

     Mortgagor: The obligor on a Mortgage Note.

     Negative Amortization Certificate: None.

     Net Excess  Spread:  With respect to any  Distribution  Date, the fraction,
expressed as a  percentage,  the  numerator of which is equal to the amount,  if
any, by which (a) the product of (i) the Aggregate Loan Balance as of the end of
the  related  Collection  Period and (ii) the  weighted  average  (by  Scheduled
Principal Balance) of the Net Mortgage Rates exceeds (b) the Interest Remittance
Amount for such  Distribution  Date, and the denominator of which is the product
of (x) the  Aggregate  Loan  Balance  and (y) the  actual  number of days in the
related Accrual Period divided by 360.

     Net Funds Cap: The weighted average (by Scheduled Principal Balance) of the
Net  Mortgage  Rates of the  Mortgage  Loans as of the first day of the  related
Accrual Period.

     Net Liquidation Proceeds: With respect to any Liquidated Mortgage Loan, the
related Liquidation Proceeds net of unreimbursed expenses incurred in connection
with liquidation or foreclosure and unreimbursed  Advances, if any, received and
retained in connection with the liquidation of such Mortgage Loan.

     Net Mortgage  Rate:  With respect to any Mortgage  Loan,  the Mortgage Rate
thereof  reduced by the sum of the  applicable  Servicing  Fee Rate,  the Master
Servicing Fee Rate and the Trustee Fee Rate.

     Net Prepayment Interest  Shortfall:  With respect to any Distribution Date,
the excess, if any, of any Prepayment Interest Shortfalls for such date over the
sum of any amounts paid by the Servicers with respect to such shortfalls and any
amount  that is  required  to be paid by the Master  Servicer in respect of such
shortfalls pursuant to this Agreement.

     Non-Book-Entry  Certificate:   Any  Certificate  other  than  a  Book-Entry
Certificate.

     Notional  Amount:  With  respect  to  any  Notional   Certificate  and  any
Distribution  Date,  such  Certificate's  Percentage  Interest of the  Aggregate
Notional  Amount  of such  Class of  Certificates  for such  Distribution  Date.
Notional Certificate: None.

     Offering Document: The Prospectus.

     Officer's  Certificate:  A certificate signed by the Chairman of the Board,
any Vice  Chairman,  the  President,  any Vice  President or any Assistant  Vice
President of a Person, and in each case delivered to the Trustee.

     Opinion of Counsel: A written opinion of counsel,  reasonably acceptable in
form and substance to the Trustee, and who may be in-house or outside counsel to
the Depositor,  the Master  Servicer or a Servicer but which must be Independent
outside  counsel  with  respect to any such  opinion of counsel  concerning  the
transfer of any Residual  Certificate or concerning certain matters with respect
to the Employee Retirement Income Security Act of 1974, as amended ("ERISA"), or
the taxation, or the federal income tax status, of each REMIC.

     Option  One:  Option  One  Mortgage  Corporation,  as  Servicer  under  the
applicable Servicing Agreement.

     Original  Value:  The  lesser  of (a) the  Appraised  Value of a  Mortgaged
Property at the time the related  Mortgage  Loan was  originated  and (b) if the
Mortgage  Loan was made to finance  the  acquisition  of the  related  Mortgaged
Property, the purchase price paid for the Mortgaged Property by the Mortgagor at
the time the related Mortgage Loan was originated.

     Overcollateralization  Amount:  With respect to any Distribution  Date, the
amount,  if any, by which (x) the  Aggregate  Loan Balance as of the last day of
the related  Collection Period exceeds (y) the aggregate  Certificate  Principal
Amount  of the  Certificates  after  giving  effect  to  distributions  on  such
Distribution Date.

     Overcollateralization  Deficiency:  With respect to any Distribution  Date,
the amount, if any, by which (x) the Targeted  Overcollateralization  Amount for
such  Distribution  Date exceeds (y) the  Overcollateralization  Amount for such
Distribution  Date,  calculated  for this  purpose  after  giving  effect to the
reduction  on such  Payment  Date of the  Certificate  Principal  Amounts of the
Certificates  resulting from the distribution of the Principal Remittance Amount
(but not the Extra Principal Distribution Amount) on such Distribution Date, but
prior to allocation of any Applied Loss Amount on such Distribution Date.

     Overcollateralization  Release  Amount:  With  respect to any  Distribution
Date, the lesser of (x) the Principal  Remittance  Amount for such  Distribution
Date and (y) the amount, if any, by which (i) the  Overcollateralization  Amount
for such date,  calculated for this purpose on the basis of the assumption  that
100% of the Principal Remittance Amount for such date is applied on such date in
reduction of the Certificate Principal Amounts of the Certificates, exceeds (ii)
the Targeted Overcollateralization Amount for such date.

     Payahead:  With respect to any Mortgage Loan and any Due Date therefor, any
Scheduled  Payment  received by the  applicable  Servicer  during any Collection
Period in addition to the  Scheduled  Payment due on such Due Date,  intended by
the related Mortgagor to be applied on a subsequent Due Date.

     Paying Agent: Any paying agent appointed pursuant to Section 3.08.

     Percentage  Interest:  With  respect  to any  Certificate,  its  percentage
interest  in the  undivided  beneficial  ownership  interest  in the Trust  Fund
evidenced  by all  Certificates  of the  same  Class as such  Certificate.  With
respect to any Certificate other than the Class X and Class R Certificates,  the
Percentage  Interest  evidenced  thereby  shall  equal the  initial  Certificate
Principal  Amount  thereof  divided by the initial Class  Certificate  Principal
Amount of all  Certificates  of the same Class.  With respect to the Class X and
Class R Certificates, the Percentage Interest evidenced thereby shall be 100%.

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

     Placement Agent: Lehman Brothers Inc.

     Plan Asset Regulations: The Department of Labor regulations set forth in 29
C.F.R. 2510.3-101.

     Pool Delinquency Rate: With respect to any Collection Period, the fraction,
expressed as a percentage,  the numerator of which is the aggregate  outstanding
principal  balance of all Mortgage Loans 60 or more days  delinquent  (including
all foreclosures and REO Properties) as of the close of business on the last day
of such  Collection  Period,  and the denominator of which is the Aggregate Loan
Balance as of the close of business on the last day of such Collection Period.

     Premium Mortgage Loan: None.

     Prepayment  Interest  Shortfall:  With  respect  to  any  full  or  partial
Principal  Prepayment of a Mortgage Loan,  the  difference  between (i) one full
month's  interest  at  the  applicable  Mortgage  Rate  (giving  effect  to  any
applicable  Relief Act Reduction),  as reduced by the Master  Servicing Fee Rate
and the applicable  Servicing Fee Rate, on the outstanding  principal balance of
such Mortgage Loan  immediately  prior to such prepayment and (ii) the amount of
interest actually received with respect to such Mortgage Loan in connection with
such Principal Prepayment.

     Prepayment  Period:  The  applicable  period  specified  in the  applicable
Servicing  Agreement  (whether  or not  specifically  defined  as a  "Prepayment
Period") during which amounts required to be remitted by the related Servicer in
respect of Mortgage Loan prepayments on the applicable  Servicer Remittance Date
are received by such Servicer.

     Primary Mortgage Insurance Policy:  Mortgage guaranty insurance, if any, on
an individual Mortgage Loan, as evidenced by a policy or certificate.

     Principal  Distribution  Amount: With respect to any Distribution Date, the
sum of (i) the Principal  Remittance Amount for such date minus, with respect to
each Distribution  Date, the  Overcollateralization  Release Amount, if any, for
such date and (ii) the Extra  Principal  Distribution  Amount,  if any, for such
date.

     Principal Only Certificate: None.

     Principal  Prepayment:  Any  Mortgagor  payment of principal  (other than a
Balloon  Payment) or other  recovery  of  principal  on a Mortgage  Loan that is
recognized  as having been received or recovered in advance of its scheduled Due
Date and  applied  to reduce  the  principal  balance  of the  Mortgage  Loan in
accordance  with the  terms of the  Mortgage  Note or the  applicable  Servicing
Agreement.

     Principal Remittance Amount: With respect to any Distribution Date, the sum
of (i) all principal  collected (other than Payaheads) or advanced in respect of
Scheduled  Payments on the Mortgage Loans during the related  Collection  Period
(less amounts due to the Master Servicer,  the Servicers or the Trustee,  to the
extent allocable to principal),  (ii) the outstanding  principal balance of each
Mortgage  Loan  that was  purchased  from the  Trust  Fund  during  the  related
Prepayment Period,  (iii) the portion of any Substitution Amount paid during the
related  Prepayment Period allocable to principal,  and (iv) all Net Liquidation
Proceeds,  Insurance Proceeds and other recoveries  collected during the related
Prepayment Period, to the extent allocable to principal, as reduced in each case
by  unreimbursed  Advances  and other  amounts due to the Master  Servicer,  the
Servicers or the Trustee, to the extent allocable to principal.

     Proceeding:  Any  suit  in  equity,  action  at law or  other  judicial  or
administrative proceeding.

     Proprietary  Lease:  With  respect  to any  Cooperative  Unit,  a lease  or
occupancy  agreement  between a Cooperative  Corporation and a holder of related
Cooperative Shares.

     Prospectus:  The prospectus  supplement dated April 27, 1998, together with
the  accompanying  prospectus  dated March 18, 1998,  relating to the Class A-1,
Class A-2, Class M-1, Class M-2 and Class B Certificates.

     Purchase Price:  With respect to the repurchase of a Mortgage Loan pursuant
to Article II of this Agreement or the Special  Servicing  Agreement,  an amount
equal to the sum of (a) 100% of the unpaid  principal  balance of such  Mortgage
Loan, (b) accrued  interest  thereon at the Mortgage  Rate,  from the date as to
which  interest was last paid to (but not  including)  the Due Date  immediately
preceding  the related  Distribution  Date and (c) any  amounts  advanced by the
Master Servicer or any Servicer (or the Trustee) and not previously  reimbursed,
together with any unpaid Master  Servicing  Fees and Servicing  Fees. The Master
Servicer or the applicable  Servicer (or the Trustee,  if  applicable)  shall be
reimbursed from the Purchase Price for any Mortgage Loan or related REO Property
for any Advances made with respect to such  Mortgage Loan that are  reimbursable
to the Master  Servicer or the  applicable  Servicer under this Agreement or the
applicable Servicing Agreement (or to the Trustee hereunder).

     Qualified  GIC: A guaranteed  investment  contract or surety bond providing
for the investment of funds in the Collection Account or the Certificate Account
and insuring a minimum,  fixed or floating rate of return on investments of such
funds, which contract or surety bond shall:

     (b) be an obligation  of an insurance  company or other  corporation  whose
long-term  debt is rated by each Rating Agency in one of its two highest  rating
categories or, if such  insurance  company has no long-term  debt,  whose claims
paying  ability is rated by each Rating Agency in one of its two highest  rating
categories,  and whose  short-term  debt is rated by each  Rating  Agency in its
highest rating category;

     (c)  provide  that the Trustee may  exercise  all of the rights  under such
contract or surety bond without the  necessity of taking any action by any other
Person;  (d) provide that if at any time the then current credit standing of the
obligor  under  such  guaranteed  investment  contract  is such  that  continued
investment  pursuant to such contract of funds would result in a downgrading  of
any rating of the  Certificates,  the  Trustee  shall  terminate  such  contract
without penalty and be entitled to the return of all funds  previously  invested
thereunder, together with accrued interest thereon at the interest rate provided
under such  contract to the date of delivery of such funds to the  Trustee;  (e)
provide  that  the  Trustee's  interest  therein  shall be  transferable  to any
successor  trustee  hereunder:   and  (f)  provide  that  the  funds  reinvested
thereunder and accrued interest thereon be returnable to the Collection  Account
or the Certificate  Account, as the case may be, not later than the Business Day
prior to any Distribution  Date.  Qualified  Insurer:  An insurance company duly
qualified  as such under the laws of the states in which the  related  Mortgaged
Properties are located,  duly authorized and licensed in such states to transact
the applicable  insurance business and to write the insurance provided and whose
claims  paying  ability is rated by each  Rating  Agency in its  highest  rating
category or whose  selection as an insurer will not adversely  affect the rating
of the Certificates.

     Qualifying  Substitute  Mortgage  Loan:  In the  case  of a  Mortgage  Loan
substituted  for a Deleted  Mortgage  Loan, a Mortgage Loan that, on the date of
substitution,  (i) has a Scheduled  Principal Balance (together with that of any
other mortgage loan  substituted  for the same Deleted  Mortgage Loan) as of the
Due Date in the month in which  such  substitution  occurs  not in excess of the
Scheduled  Principal  Balance of the related  Deleted  Mortgage Loan,  provided,
however,  that,  to the  extent  that the  Scheduled  Principal  Balance of such
Mortgage  Loan is less  than the  Scheduled  Principal  Balance  of the  related
Deleted Mortgage Loan, then such differential in principal amount, together with
interest thereon at the applicable Mortgage Rate net of the Master Servicing Fee
and the  applicable  Servicing  Fee from the date as to which  interest was last
paid through the end of the Collection Period in which such substitution  occurs
(such amount,  a  "Substitution  Amount"),  shall be paid by the party effecting
such substitution to the Trustee for deposit into the Certificate  Account,  and
shall be treated as a Principal  Prepayment  hereunder;  (ii) has a Net Mortgage
Rate not lower than the Net Mortgage Rate of the related Deleted  Mortgage Loan;
(iii) if the total principal balance of Qualifying  Substitute Mortgage Loans in
the Trust is less  than 5% of the  initial  principal  balance  of the  Mortgage
Loans,  has a remaining  stated term to maturity not longer  than,  and not more
than one year shorter than, the remaining term to stated maturity of the related
Deleted  Mortgage Loan;  (iv) has a  Loan-to-Value  Ratio as of the date of such
substitution  not greater than that of the related  Deleted  Mortgage  Loan; (v)
will comply with all of the  representations and warranties relating to Mortgage
Loans set forth  herein,  as of the date as of which such  substitution  occurs;
(vi) is not a Cooperative  Loan unless the related  Deleted  Mortgage Loan was a
Cooperative  Loan;  (vii) if applicable,  has the same index as and a margin not
less than that of the  related  Deleted  Mortgage  Loan and  (viii) has not been
delinquent  for a period  of more than 30 days  more  than  twice in the  twelve
months immediately preceding such date of substitution. In the event that either
one mortgage loan is substituted for more than one Deleted Mortgage Loan or more
than one mortgage loan is substituted  for one or more Deleted  Mortgage  Loans,
then (a) the Scheduled  Principal  Balance referred to in clause (i) above shall
be determined on a loan-by-loan  basis,  (b) the rate referred to in clause (ii)
above shall be determined on a loan-by-loan  basis and (c) the remaining term to
stated  maturity  referred to in clause  (iii) above  shall be  determined  on a
weighted average basis,  provided that the final scheduled  maturity date of any
Qualifying  Substitute  Mortgage  Loan  shall not  exceed  the  Final  Scheduled
Distribution Date of any Class of Certificates. Whenever a Qualifying Substitute
Mortgage  Loan is  substituted  for a Deleted  Mortgage  Loan  pursuant  to this
Agreement,   the  party   effecting   such   substitution   shall  certify  such
qualification in writing to the Trustee.

     Rating Agency: S&P.

     Realized  Loss:  With respect to each  Liquidated  Mortgage Loan, an amount
equal to (i) the unpaid  principal  balance of such Mortgage Loan as of the date
of  liquidation,  minus  (ii)  Liquidation  Proceeds  received,  to  the  extent
allocable to principal,  net of amounts that are  reimbursable  therefrom to the
Master  Servicer or any Servicer  with respect to such Mortgage Loan (other than
Advances of principal) including expenses of liquidation. In determining whether
a Realized Loss is a Realized Loss of principal,  Liquidation  Proceeds shall be
allocated,  first, to payment of expenses  related to such  Liquidated  Mortgage
Loan,  then to accrued  unpaid  interest  and  finally  to reduce the  principal
balance of the Mortgage Loan.

     Recognition  Agreement:  With respect to any Cooperative Loan, an agreement
between the related Cooperative  Corporation and the originator of such Mortgage
Loan to  establish  the rights of such  originator  in the  related  Cooperative
Property.

     Record Date: With respect to any  Distribution  Date, the close of business
on the Business Day immediately preceding such Distribution Date.

     Reference Banks: As defined in Section 4.05.

     Reimbursement Amount: As defined in Section 5.02.

     REMIC: Each pool of assets in the Trust Fund designated as a REMIC pursuant
to Section 10.01(a)  hereof.  REMIC 1 Regular  Interest:  Any of the Class T1-1,
Class T1-2 and T1-3 Interests.

     REMIC 2 Regular Interest: Any of the Class T2-1, Class T2-2, Class T2-3 and
Class T2-4 Interests.

     REMIC 3 Regular  Interest:  Any of the Class T3-1,  Class T3-2, Class T3-3,
Class T3-4, Class T3-5, Class T3-6 and Class T3-7 Interests.

     REMIC 4 Regular  Interest:  Any of the Class T4-1,  Class T4-2, Class T4-3,
Class T4-4, Class T4-5, Class T4-6, Class T4-7 and Class T4-8 Interests.

     REMIC Provisions:  The provisions of the federal income tax law relating to
real estate mortgage investment conduits,  which appear at sections 860A through
86OG of  Subchapter  M of Chapter 1 of the Code,  and  related  provisions,  and
regulations,  including  proposed  regulations and rulings,  and  administrative
pronouncements  promulgated  thereunder,  as the foregoing may be in effect from
time to time.

     Remittance  Date:  The day in each month on which each Servicer is required
to remit payments to the account maintained by the Master Servicer, as specified
in the related Servicing Agreement.

     REO  Property:  A Mortgaged  Property  acquired  by the Trust Fund  through
foreclosure  or  deed-in-lieu  of  foreclosure  in  connection  with a defaulted
Mortgage Loan or otherwise treated as having been acquired pursuant to the REMIC
Provisions.

     Required  Reserve Fund Deposit:  With respect to any  Distribution  Date on
which the Net Excess Spread is less than 0.25%, the amount,  if any by which (a)
the product of 0.50% and the  Aggregate  Loan  Balance for such date exceeds (b)
the amount on deposit in the Basis Risk Reserve Fund  immediately  prior to such
date.  With respect to any  Distribution  Date on which the Net Excess Spread is
equal to or greater than 0.25%, the amount,  if any, by which (i) $1,000 exceeds
(ii) the amount on deposit in the Basis Risk Reserve Fund  immediately  prior to
such date.

     Reserve Interest Rate: As defined in Section 4.05.

     Residual Certificate: Any Class R Certificate.

     Responsible  Officer:  When  used with  respect  to the  Trustee,  any Vice
President, Assistant Vice President, the Secretary, any assistant secretary, the
Treasurer,   or  any  assistant  treasurer,   working  in  its  corporate  trust
department,  or any other  officer of the  Trustee to whom a matter is  referred
because of such  officer's  knowledge  of and  familiarity  with the  particular
subject.

     Restricted Certificate: Any Class X or Class R Certificate.

     Reuters  Screen NYAA Page: The display  designated as page "Reuters  Screen
NYAA  Page" on the  Reuters  Monitor  Money  Rates  Service  (or such other page
selected by the  Trustee as may  replace  the NYAA page on that  service for the
purpose of displaying Federal Funds rates).

     Rolling  Three Month  Delinquency  Rate:  With respect to any  Distribution
Date, the fraction,  expressed as a percentage, equal to the average of the Pool
Delinquency  Rates  for each of the  three  (or one and two,  in the case of the
first and second Distribution Dates) immediately preceding Collection Periods.

     S&P:  Standard & Poor's  Rating  Services,  a division  of The  McGraw-Hill
Companies, Inc., or any successor in interest.

     Scheduled Payment:  Each scheduled payment of principal and interest (or of
interest only, if applicable) to be paid by the Mortgagor on a Mortgage Loan, as
reduced (except where otherwise  specified  herein) by the amount of any related
Debt Service  Reduction  (excluding  all amounts of principal  and interest that
were due on or before the Cut-off Date whenever received) and, in the case of an
REO Property, an amount equivalent to the Scheduled Payment that would have been
due on the  related  Mortgage  Loan  if  such  Mortgage  Loan  had  remained  in
existence.  In the case of any bi-weekly payment Mortgage Loan, all payments due
on such Mortgage Loan during any Collection Period shall be deemed  collectively
to constitute the Scheduled Payment due on such Mortgage Loan in such Collection
Period.

     Scheduled  Principal  Balance:  With respect to (i) any Mortgage Loan as of
any Distribution  Date, the principal balance of such Mortgage Loan at the close
of business on the Cut-off Date,  after giving effect to principal  payments due
on or before the Cut-off Date, whether or not received,  less an amount equal to
principal  payments  due after the Cut-off Date and on or before the Due Date in
the related  Collection  Period,  whether or not received  from the Mortgagor or
advanced  by the Master  Servicer,  and all  amounts  allocable  to  unscheduled
principal  payments  (including  Principal  Prepayments,  Liquidation  Proceeds,
Insurance  Proceeds  and  condemnation  proceeds,  in each  case  to the  extent
identified  and applied  prior to or during the related  Prepayment  Period) and
(ii) any REO  Property as of any  Distribution  Date,  the  Scheduled  Principal
Balance of the related Mortgage Loan on the Due Date  immediately  preceding the
date of acquisition of such REO Property by or on behalf of the Trustee (reduced
by any amount  applied as a reduction of principal on the Mortgage  Loan).  With
respect to any Mortgage  Loan and the Cut-off Date, as specified in the Mortgage
Loan Schedule.

     Security  Agreement:  With respect to any  Cooperative  Loan, the agreement
between the owner of the related  Cooperative  Shares and the  originator of the
related  Mortgage  Note that defines the terms of the security  interest in such
Cooperative Shares and the related Proprietary Lease.

     Senior Enhancement  Percentage:  With respect to any Distribution Date, the
fraction,  expressed as a  percentage,  the numerator of which is the sum of the
aggregate Certificate  Principal Amount of the Subordinate  Certificates and the
Overcollateralization  Amount, in each case after giving effect to distributions
on such  Distribution  Date, and the  denominator of which is the Aggregate Loan
Balance as of the last day of the related Collection Period.

     Senior Principal Distribution Amount: With respect to any Distribution Date
(a) prior to the  Stepdown  Date or with  respect  to which a Trigger  Event has
occurred with respect to such  Distribution  Date,  the  Principal  Distribution
Amount and (b) on or after the Stepdown  Date and as long as a Trigger Event has
not occurred  with respect to such  Distribution  Date,  the amount,  if any, by
which (x) the aggregate  Certificate Principal Amount of the Senior Certificates
immediately  prior to such  Distribution  Date exceeds (y) the lesser of (A) the
product of (i) 65.10% and (ii) the Aggregate  Loan Balance as of the last day of
the  related  Collection  Period and (B) the  amount,  if any,  by which (i) the
Aggregate  Loan  Balance  as of the last day of the  related  Collection  Period
exceeds (ii) $5,693,487.03.

     Servicer:  Any Servicer,  including the Special Servicer,  that has entered
into any of the  Servicing  Agreements  attached  as  Exhibit E  hereto,  or any
successor in interest.

     Servicing  Agreement:  Each  Servicing  Agreement,  including  the  Special
Servicing  Agreement,  among a Servicer and Lehman  Capital  attached  hereto as
Exhibit E.

     Servicing  Fee: The Servicing Fee or, in the case of the Special  Servicer,
the Base Servicing Fee, specified in the applicable Servicing Agreement.

     Servicing  Fee Rate:  With  respect to any  Servicer,  as  specified in the
applicable Servicing Agreement.

     Servicing  Officer:  Any  officer of the  Master  Servicer  involved  in or
responsible  for the  administration  and  servicing or master  servicing of the
Mortgage Loans whose name appears on a list of servicing  officers  furnished by
the  Master  Servicer  to the  Trustee,  as such  list may from  time to time be
amended.

     Special  Servicer:  Ocwen Federal Bank FSB, as special  servicer  under the
Special Servicing Agreement.

     Special Servicing Agreement: The Special Servicing Agreement between Lehman
Capital and the Special Servicer dated as of April 1, 1998,  attached as part of
Exhibit E hereto.

     Special Servicing Compensation Agreement: The agreement attached as Exhibit
L hereto  specifying the compensation to which the Special Servicer is entitled,
in  addition to the Basic Fee,  for its  services  under the  Special  Servicing
Agreement.

     Standard Rate: With respect to any Distribution Date, the higher of (x) the
rate at which interest accrues on the Class A-1 Certificates and (y) the rate at
which  interest  accrues on the Class B  Certificates,  in each case  during the
related Accrual Period.

     Startup  Day:  The day  designated  as such  pursuant  to Section  10.01(b)
hereof.

     Stepdown Date: The later to occur of (x) the Distribution  Date in May 2001
and (y) the first Distribution Date on which the Senior  Enhancement  Percentage
(calculated for this purpose after giving effect to payments or other recoveries
in respect of the Mortgage Loans during the related Collection Period but before
giving effect to distributions on the Certificates on such Distribution Date) is
greater than to equal to 34.90%.

     Subordinate  Certificate:  Any Class  M-1,  Class  M-2,  Class B or Class X
Certificate.

     Substitution Amount: As defined in the definition of Qualifying  Substitute
Mortgage Loan.

     Targeted  Overcollateralization  Amount:  With respect to any  Distribution
Date,  (x) prior to the Stepdown  Date,  the product of 1.98% and the  Aggregate
Loan Balance as of the Cut-Off Date and (y) on and after the Stepdown  Date, the
greater of (i) the  product of 3.96% and the  Aggregate  Loan  Balance as of the
last day of the related Collection Period and (ii) $5,693,487.03.

     Tax Matters  Person:  The "tax  matters  person" as  specified in the REMIC
Provisions.

     Telerate  Page 120: The display  designated  as "Page 120" on the Dow Jones
Telerate Service (or such other page selected by the Trustee as may replace Page
120 on that service for the purpose of displaying daily Federal Funds rates).

     Termination Price: As defined in Section 7.01 hereof.

     Title Insurance Policy: A title insurance policy maintained with respect to
a Mortgage Loan.

     Total Distribution  Amount:  With respect to any Distribution Date, the sum
of the Interest  Remittance  Amount for such date and the  Principal  Remittance
Amount for such date.

     Transfer Agreement: As defined in the Mortgage Loan Sale Agreement.

     Transferor:  Each seller of Mortgage Loans to Lehman Capital  pursuant to a
Transfer Agreement.

     Trigger  Event:  A Trigger  Event will have  occurred  with  respect to any
Distribution Date if the Rolling Three Month Delinquency Rate as of the last day
of the  immediately  preceding  Collection  Period  equals or exceeds 50% of the
Senior Enhancement Percentage for such Distribution Date.

     Trust Fund:  The corpus of the trust  created  pursuant to this  Agreement,
consisting of the Mortgage Loans, the assignment of the Depositor's rights under
the  Mortgage  Loan Sale  Agreement,  such amounts as shall from time to time be
held in the Collection Account,  the Certificate Account and any Escrow Account,
the Insurance Policies, any REO Property and the other items referred to in, and
conveyed to the Trustee under, Section 2.01(a).

     Trustee: First Union National Bank, or any successor in interest, or if any
successor trustee or any co-trustee shall be appointed as herein provided,  then
such successor trustee and such co-trustee, as the case may be.

     Trustee Fee: As to any Distribution Date, an amount equal to the product of
the Trustee Fee Rate and the  Aggregate  Loan Balance as of the first day of the
related Collection Period.

     Trustee Fee Rate: 0.00175% per annum.

     Unpaid Basis Risk Shortfall:  With respect to any Distribution Date and any
Class of LIBOR  Certificates,  the aggregate of all Basis Risk  Shortfalls  with
respect to such Class remaining unpaid from previous  Distribution  Dates,  plus
interest accrued thereon at the applicable Certificate Interest Rate (calculated
without giving effect to the Net Funds Cap).

     Upper Tier REMIC: REMIC 4.

     Voting Interests:  The portion of the voting rights of all the Certificates
that is allocated to any  Certificate  for purposes of the voting  provisions of
this  Agreement.  At all times  during  the term of this  Agreement,  93% of all
Voting Interests shall be allocated to the  Certificates  other than the Class X
Certificate,  and 7% of all Voting  Interests  shall be allocated to the Class X
Certificate.  Voting  Interests  shall be allocated  among the other  Classes of
Certificates  (and among the Certificates  within each such Class) in proportion
to their Class Certificate Principal Amounts (or Certificate Principal Amounts).

     Section 1.02. Calculations Respecting Mortgage Loans. Calculations required
to be made pursuant to this  Agreement  with respect to any Mortgage Loan in the
Trust Fund shall be made based upon current  information  as to the terms of the
Mortgage  Loans and  reports of payments  received  from the  Mortgagor  on such
Mortgage Loans and payments to be made to the Trustee as supplied to the Trustee
by the Master Servicer.  The Trustee shall not be required to recompute,  verify
or recalculate the information supplied to it by the Master Servicer.

     Section 1.03. Calculations  Respecting Accrued Interest.  Accrued interest,
if any, on any Certificate shall be calculated based upon a 360-day year and the
actual number of days in each Accrual Period.

                                   ARTICLE II.

                              DECLARATION OF TRUST;
                            ISSUANCE OF CERTIFICATES

     Section  2.01.  Creation  and  Declaration  of Trust  Fund;  Conveyance  of
Mortgage  Loans.  (a)  Concurrently  with the  execution  and  delivery  of this
Agreement,  the Depositor does hereby transfer,  assign,  set over, deposit with
and otherwise convey to the Trustee,  without recourse, in trust, all the right,
title  and  interest  of  the  Depositor  in and to  the  Mortgage  Loans.  Such
conveyance  includes,  without  limitation,  the right to all  distributions  of
principal and interest  received on or with respect to the Mortgage Loans on and
after the Cut-off Date (other than  payments of principal and interest due on or
before such date),  and all such payments due after such date but received prior
to such date and  intended by the related  Mortgagors  to be applied  after such
date,  together with all of the Depositor's  right, title and interest in and to
the  Collection  Account and all amounts  from time to time  credited to and the
proceeds of the Collection Account, the Certificate Account and all amounts from
time to time credited to and the proceeds of the Certificate Account, any Escrow
Account established pursuant to Section 9.06 hereof and all amounts from time to
time credited to and the proceeds of any such Escrow  Account,  any REO Property
and the proceeds thereof,  the Depositor's  rights under any Insurance  Policies
related  to  the  Mortgage  Loans,  the  Depositor's  security  interest  in any
collateral  pledged  to secure  the  Mortgage  Loans,  including  the  Mortgaged
Properties and any Additional Collateral,  and any proceeds of the foregoing, to
have and to hold, in trust; and the Trustee declares that, subject to the review
provided for in Section  2.02, it has received and shall hold the Trust Fund, as
trustee,  in trust,  for the benefit and use of the Holders of the  Certificates
and for the purposes and subject to the terms and  conditions  set forth in this
Agreement,  and,  concurrently  with such  receipt,  has caused to be  executed,
authenticated  and delivered to or upon the order of the Depositor,  in exchange
for the Trust Fund, Certificates in the authorized  denominations evidencing the
entire ownership of the Trust Fund.

         Concurrently  with the  execution and delivery of this  Agreement,  the
Depositor does hereby assign to the Trustee all of its rights and interest under
the Mortgage Loan Sale  Agreement,  including all rights of Lehman Capital under
the Servicing  Agreements  and the Transfer  Agreements  to the extent  assigned
thereunder, and delegates its obligations thereunder. The Trustee hereby accepts
such assignment and delegation,  and shall be entitled to exercise all rights of
the Depositor under the Mortgage Loan Sale Agreement as if, for such purpose, it
were the Depositor.

     (b) In connection  with such transfer and  assignment,  the Depositor  does
hereby  deliver to, and deposit  with, or cause to be delivered to and deposited
with,  the Trustee,  and/or any  custodian  acting on the Trustee's  behalf,  if
applicable, the following documents or instruments with respect to each Mortgage
Loan (each a "Mortgage File") so transferred and assigned:

     (i) ______ with respect to each Mortgage Loan,  the original  Mortgage Note
     endorsed without recourse in proper form to the order of the Trustee, or in
     blank  (in  each  case,  with all  necessary  intervening  endorsements  as
     applicable);

          (i) the  original of any  guarantee  executed in  connection  with the
Mortgage Note, assigned to the Trustee;

          (ii) with respect to any Mortgage Loan other than a Cooperative  Loan,
the original recorded Mortgage with evidence of recording indicated thereon. If,
in connection with any Mortgage Loan, the Depositor  cannot deliver the Mortgage
with evidence of recording  thereon on or prior to the Closing Date because of a
delay  caused by the  public  recording  office  where  such  Mortgage  has been
delivered for  recordation or because such Mortgage has been lost, the Depositor
shall deliver or cause to be delivered to the Trustee (or its custodian), in the
case of a delay due to recording, a true copy of such Mortgage, pending delivery
of the original thereof, together with an Officer's Certificate of the Depositor
certifying  that the copy of such  Mortgage  delivered  to the  Trustee  (or its
custodian)  is a true  copy and  that the  original  of such  Mortgage  has been
forwarded to the public recording office, or, in the case of a Mortgage that has
been lost,  a copy  thereof  (certified  as  provided  for under the laws of the
appropriate  jurisdiction)  and a written  Opinion of Counsel  acceptable to the
Trustee and the Depositor that an original  recorded Mortgage is not required to
enforce the Trustee's  interest in the Mortgage Loan; 

          (iii) The original of each  assumption,  modification  or substitution
agreement,  if any,  relating to the Mortgage  Loans,  or, as to any assumption,
modification or substitution  agreement which cannot be delivered on or prior to
the Closing Date because of a delay caused by the public  recording office where
such assumption,  modification or substitution  agreement has been delivered for
recordation,  a  photocopy  of such  assumption,  modification  or  substitution
agreement,  pending delivery of the original thereof, together with an Officer's
Certificate  of the  Depositor  certifying  that  the  copy of such  assumption,
modification  or  substitution  agreement  delivered  to  the  Trustee  (or  its
custodian)  is a true  copy and that the  original  of such  agreement  has been
forwarded  to the  public  recording  office;

          (v)       with respect to any Mortgage  Loan other than a  Cooperative
                    Loan, the original  Assignment of Mortgage for each Mortgage
                    Loan;

          (iv) If  applicable,  such  original  intervening  assignments  of the
Mortgage,  notice of transfer or equivalent  instrument  (each,  an "Intervening
Assignment"),  as may be necessary to show a complete  chain of assignment  from
the originator, or, in the case of an Intervening Assignment that has been lost,
a written  Opinion of  Counsel  acceptable  to the  Trustee  that such  original
Intervening  Assignment is not required to enforce the Trustee's interest in the
Mortgage Loans;

          (v) the original Primary Mortgage Insurance Policy or certificate,  if
private  mortgage  guaranty  insurance  is  required;  (vi) with  respect to any
Mortgage  Loan other than a  Cooperative  Loan,  the  original  mortgagee  title
insurance policy or attorney's opinion of title and abstract of title; (vii) the
original of any security  agreement,  chattel mortgage or equivalent executed in
connection with the Mortgage or as to any security  agreement,  chattel mortgage
or their  equivalent  that cannot be  delivered  on or prior to the Closing Date
because of a delay caused by the public recording office where such document has
been delivered for recordation,  a photocopy of such document,  pending delivery
of the original thereof, together with an Officer's Certificate of the Depositor
certifying that the copy of such security  agreement,  chattel mortgage or their
equivalent  delivered to the Trustee (or its  custodian) is a true copy and that
the original of such document has been forwarded to the public recording office;
(x) with respect to any Cooperative Loan, the Cooperative Loan Documents; and

          (viii) in  connection  with any pledge of Additional  Collateral,  the
original  additional  collateral  pledge  and  security  agreement  executed  in
connection therewith, assigned to the Trustee.

     The  parties  hereto  acknowledge  and agree  that the form of  endorsement
attached  hereto as  Exhibit  B-4 is  intended  to effect  the  transfer  to the
Trustee,  for the benefit of the  Certificateholders,  of the Mortgage Notes and
the Mortgages.

          (c) Assignments of Mortgage shall be recorded; provided, however, that
such  Assignments need not be recorded if, in the Opinion of Counsel (which must
be  Independent  counsel)  acceptable  to the Trustee  and the Rating  Agencies,
recording  in such states is not required to protect the  Trustee's  interest in
the  related  Mortgage  Loans.  Subject to the  preceding  sentence,  as soon as
practicable  after  the  Closing  Date,  the  Trustee,  at  the  expense  of the
Depositor,  shall cause to be properly  recorded in each public recording office
where the  Mortgages are recorded  each  Assignment  of Mortgage  referred to in
subsection (b)(v) above.

          (d) In  instances  where a Title  Insurance  Policy is  required to be
delivered to the Trustee under clause  (b)(viii)  above and is not so delivered,
the Depositor will provide a copy of such Title Insurance  Policy to the Trustee
as promptly as practicable  after the execution and delivery hereof,  but in any
case within 180 days of the Closing Date.

          (e) For  Mortgage  Loans (if any) that have been prepaid in full after
the  Cut-off  Date and prior to the  Closing  Date,  the  Depositor,  in lieu of
delivering the above  documents,  herewith  delivers to the Trustee an Officer's
Certificate  which  shall  include a  statement  to the effect  that all amounts
received in connection with such prepayment that are required to be deposited in
the  applicable  Collection  Account  pursuant  to  Section  4.01  have  been so
deposited. All original documents that are not delivered to the Trustee shall be
held by the Master Servicer or the applicable  Servicer in trust for the benefit
of the  Trustee  and the  Certificateholders.

     Section 2.02. Acceptance of Trust Fund by Trustee:  Review of Documentation
for Trust Fund. (a) The Trustee, by execution and delivery hereof,  acknowledges
receipt of the Mortgage  Files  pertaining  to the Mortgage  Loans listed on the
Mortgage  Loan  Schedule,  subject to review  thereof by the Trustee,  or by the
applicable  Custodian on behalf of the Trustee,  under this  Section  2.02.  The
Trustee, or the applicable Custodian on behalf of the Trustee,  will execute and
deliver on the Closing Date to the Depositor and the Master  Servicer an Initial
Certification in the form annexed hereto as Exhibit B-1.

          (b) Within 45 days after the Closing Date,  the  applicable  Custodian
will,  on  behalf  of  the  Trustee  and  for  the  benefit  of  Holders  of the
Certificates, review each Mortgage File to ascertain that all required documents
set forth in Section 2.01 have been received and appear on their face to contain
the requisite  signatures by or on behalf of the respective parties thereto, and
shall deliver to the Depositor,  the Master Servicer and the Special Servicer an
Interim  Certification  in the form annexed  hereto as Exhibit B-2 to the effect
that, as to each Mortgage Loan listed in the Mortgage Loan Schedule  (other than
any Mortgage Loan prepaid in full or any Mortgage Loan  specifically  identified
in such  certification  as not  covered by such  certification),  (i) all of the
applicable documents specified in Section 2.01(b) are in its possession and (ii)
such  documents  have been  reviewed by it and appear to relate to such Mortgage
Loan. The Trustee, or the applicable  Custodian on behalf of the Trustee,  shall
make sure that the documents  are executed and  endorsed,  but shall be under no
duty  or  obligation  to  inspect,   review  or  examine  any  such   documents,
instruments,  certificates or other papers to determine that the same are valid,
binding,  legally  effective,   properly  endorsed,   genuine,   enforceable  or
appropriate for the represented purpose or that they have actually been recorded
or are in recordable form or that they are other than what they purport to be on
their face.  Neither the Trustee nor any Custodian shall have any responsibility
for verifying the genuineness or the legal effectiveness of or authority for any
signatures of or on behalf of any party or endorser.

          (c) If in the course of the review  described in  paragraph  (b) above
the Trustee or any Custodian discovers any document or documents  constituting a
part of a Mortgage  File that is  missing,  does not appear  regular on its face
(i.e., is mutilated,  damaged, defaced, torn or otherwise physically altered) or
appears to be unrelated to the Mortgage  Loans  identified  in the Mortgage Loan
Schedule (each, a "Material Defect"),  the Trustee, or the applicable  Custodian
on behalf of the Trustee,  shall  promptly  identify the Mortgage  Loan to which
such  Material  Defect  relates  in the  Interim  Certificate  delivered  to the
Depositor or the Master  Servicer  (and to the  Trustee).  Within 90 days of its
receipt of such notice, the applicable  Transferor,  or, if such Transferor does
not do so, the Depositor shall be required to cure such Material Defect (and, in
such  event,   the  Depositor  shall  provide  the  Trustee  with  an  Officer's
Certificate  confirming  that such cure has been  effected).  If the  applicable
Transferor  or the  Depositor,  as  applicable,  does not so cure such  Material
Defect,  the applicable  Transferor,  or, if such Transferor does not do so, the
Depositor, shall repurchase the related Mortgage Loan from the Trust Fund at the
Purchase  Price.  Within the two year period  following  the Closing  Date,  the
Depositor may, in lieu of  repurchasing a Mortgage Loan pursuant to this Section
2.02,  substitute for such Mortgage Loan a Qualifying  Substitute  Mortgage Loan
subject to the  provisions  of Section  2.05.  The failure of the Trustee or the
applicable Custodian to give the notice contemplated herein within 45 days after
the Closing Date shall not affect or relieve the Depositor of its  obligation to
repurchase  any Mortgage Loan pursuant to this Section 2.02 or any other Section
of this  Agreement  requiring the  repurchase  of Mortgage  Loans from the Trust
Fund.  (d) Within 180 days  following  the Closing  Date,  the  Trustee,  or the
applicable  Custodian,  shall deliver to the Depositor,  the Master Servicer and
the Special  Servicer a Final  Certification  substantially  in the form annexed
hereto as Exhibit B-3 evidencing the  completeness  of the Mortgage Files in its
possession  or control.  (e) Nothing in this  Agreement  shall be  construed  to
constitute   an   assumption   by  the   Trust   Fund,   the   Trustee   or  the
Certificateholders  of any  unsatisfied  duty,  claim or other  liability on any
Mortgage  Loan  or to  any  Mortgagor.

     Section 2.03.  Representations  and  Warranties of the  Depositor.  (a) The
Depositor  hereby  represents  and warrants to the  Trustee,  for the benefit of
Certificateholders,  and to the Master Servicer,  as of the Closing Date or such
other date as is specified, that:

     (i) the Depositor is a corporation  duly organized,  validly  existing
     and in good  standing  under  the  laws  governing  its  creation  and
     existence  and has  full  corporate  power  and  authority  to own its
     property,  to carry on its business as presently  conducted,  to enter
     into and perform its obligations  under this Agreement,  and to create
     the trust pursuant hereto;

          (i) the execution and delivery by the Depositor of this Agreement have
been  duly  authorized  by all  necessary  corporate  action  on the part of the
Depositor;  neither  the  execution  and  delivery  of this  Agreement,  nor the
consummation of the transactions  herein  contemplated,  nor compliance with the
provisions hereof,  will conflict with or result in a breach of, or constitute a
default under, any of the provisions of any law, governmental rule,  regulation,
judgment,  decree or order  binding on the  Depositor or its  properties  or the
certificate of incorporation or bylaws of the Depositor;

          (ii) the execution,  delivery and performance by the Depositor of this
Agreement and the  consummation of the transactions  contemplated  hereby do not
require the consent or  approval  of, the giving of notice to, the  registration
with,  or the taking of any other  action in respect  of, any state,  federal or
other governmental authority or agency, except such as has been obtained, given,
effected or taken prior to the date hereof;  

          (iii) this  Agreement  has been duly  executed  and  delivered  by the
Depositor and, assuming due authorization, execution and delivery by the Trustee
and the Master  Servicer,  constitutes  a valid and  binding  obligation  of the
Depositor  enforceable  against it in  accordance  with its terms except as such
enforceability  may be subject to (A) applicable  bankruptcy and insolvency laws
and other  similar laws  affecting  the  enforcement  of the rights of creditors
generally  and (B)  general  principles  of equity  regardless  of whether  such
enforcement is considered in a proceeding in equity or at law;

          (v) there are no  actions,  suits or  proceedings  pending  or, to the
          knowledge  of the  Depositor,  threatened  or  likely  to be  asserted
          against  or  affecting  the   Depositor,   before  or  by  any  court,
          administrative  agency,  arbitrator  or  governmental  body  (A)  with
          respect to any of the  transactions  contemplated by this Agreement or
          (B) with  respect to any other  matter  which in the  judgment  of the
          Depositor  will be  determined  adversely to the Depositor and will if
          determined  adversely to the Depositor materially and adversely affect
          it or its business,  assets,  operations  or  condition,  financial or
          otherwise,  or adversely affect its ability to perform its obligations
          under this Agreement; and

          (iv) immediately  prior to the transfer and assignment of the Mortgage
Loans to the Trustee,  the  Depositor was the sole owner of record and holder of
each Mortgage Loan, and the Depositor had good and marketable title thereto, and
had full right to transfer and sell each  Mortgage  Loan to the Trustee free and
clear,  subject only to (1) liens of current real property taxes and assessments
not yet due and payable and, if the related Mortgaged  Property is a condominium
unit,  any  lien  for  common  charges  permitted  by  statute,  (2)  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  related  Mortgaged
Property is located and specifically referred to in the lender's Title Insurance
Policy or  attorney's  opinion of title and  abstract of title  delivered to the
originator  of such  Mortgage  Loan,  and (3) 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,  of any  encumbrance,  equity,  participation  interest,  lien,
pledge,  charge,  claim or security interest,  and had full right and authority,
subject to no interest or participation  of, or agreement with, any other party,
to sell and assign each Mortgage Loan pursuant to this Agreement.

          (b) The representations and warranties of each Transferor with respect
to the related Mortgage Loans in the applicable Transfer  Agreement,  which have
been assigned to the Trustee  hereunder,  were made as of the date  specified in
the applicable  Transfer  Agreement (or underlying  agreement,  if such Transfer
Agreement is in the form of an assignment of a prior  agreement).  To the extent
that any fact,  condition or event with respect to a Mortgage Loan constitutes a
breach of both (i) a  representation  or warranty of the  applicable  Transferor
under the applicable Transfer Agreement and (ii) a representation or warranty of
Lehman Capital under the Mortgage Loan Sale Agreement,  the only right or remedy
of the  Trustee  or of any  Certificateholder  shall be the  Trustee's  right to
enforce  the  obligations  of the  applicable  Transferor  under any  applicable
representation  or  warranty  made by it.  The  Trustee  acknowledges  that  the
representations  and  warranties  of Lehman  Capital in  Section  1.04(b) of the
Mortgage Loan Sale  Agreement are  applicable  only to facts or conditions  that
arise  or  events   that  occur   subsequent   to  the  date  as  of  which  the
representations and warranties with respect to the related Mortgage Loans in the
Transfer  Agreements  were  made,  and which do not  constitute  a breach of any
representation  or warranty made by the applicable  Transferor in the applicable
Transfer Agreement.  The Trustee  acknowledges that Lehman Capital shall have no
obligation  or  liability  with  respect  to any breach of a  representation  or
warranty made by it with respect to the Mortgage Loans if the fact, condition or
event  constituting such breach also constitutes a breach of a representation or
warranty made by the applicable Transferor in the applicable Transfer Agreement,
without regard to whether such Transferor  fulfills its contractual  obligations
in respect of such representation or warranty.  The Trustee further acknowledges
that the Depositor  shall have no  obligation  or liability  with respect to any
breach of any  representation  or warranty  with respect to the  Mortgage  Loans
(except as set forth in Section 2.03(a)(vi)) under any circumstances.

     Section 2.04.  Discovery of Breach.  It is  understood  and agreed that the
representations  and  warranties  (i) set forth in Section 2.03,  (ii) of Lehman
Capital  set forth in the  Mortgage  Loan Sale  Agreement  and  assigned  to the
Trustee  by the  Depositor  hereunder  and  (iii)  of each  Transferor  and each
Servicer,  assigned by Lehman Capital to the Depositor  pursuant to the Mortgage
Loan Sale Agreement and assigned to the Trustee by the Depositor hereunder shall
each survive  delivery of the Mortgage  Files and the  Assignment of Mortgage of
each Mortgage Loan to the Trustee and shall continue throughout the term of this
Agreement.  Upon discovery by either the Depositor,  the Master  Servicer or the
Trustee of a breach of any of such representations and warranties that adversely
and  materially  affects  the  value of the  related  Mortgage  Loan,  the party
discovering  such breach shall give prompt  written notice to the other parties.
Within 90 days of the  discovery of a breach of any  representation  or warranty
given to the Trustee by the Depositor or given by Lehman Capital and assigned to
the Trustee,  the Depositor or Lehman Capital,  as applicable,  shall either (a)
cure such breach in all material respects,  (b) repurchase such Mortgage Loan or
any property  acquired in respect thereof from the Trustee at the Purchase Price
or (c) within the two year period  following  the  Closing  Date,  substitute  a
Qualifying Substitute Mortgage Loan for the affected Mortgage Loan. In the event
of discovery of a breach of any  representation  and warranty of any  Transferor
assigned  to the  Trustee,  the  Trustee  shall  enforce  its  rights  under the
applicable Transfer Agreement for the benefit of Certificateholders.

     Section 2.05.  Repurchase,  Purchase or Substitution of Mortgage Loans. (a)
With respect to any Mortgage Loan repurchased by the Depositor  pursuant to this
Article II, by Lehman Capital pursuant to the Mortgage Loan Sale Agreement or by
any Transferor  pursuant to the  applicable  Transfer  Agreement,  the principal
portion of the funds received by the Trustee in respect of such  repurchase of a
Mortgage Loan will be considered a Principal  Prepayment  and shall be deposited
in the Collection Account.  The Trustee,  upon receipt of the full amount of the
Purchase Price for a Deleted Mortgage Loan, or upon receipt of the Mortgage File
for a Qualifying  Substitute  Mortgage Loan  substituted for a Deleted  Mortgage
Loan (and any  applicable  Substitution  Amount),  shall  release or cause to be
released  and  reassign  to the  Depositor,  Lehman  Capital  or the  applicable
Transferor,  as applicable,  the related  Mortgage File for the Deleted Mortgage
Loan and shall execute and deliver such  instruments  of transfer or assignment,
in each case without recourse, representation or warranty, as shall be necessary
to vest in such party or its designee or assignee title to any Deleted  Mortgage
Loan released pursuant hereto, free and clear of all security  interests,  liens
and other  encumbrances  created by this Agreement,  which  instruments shall be
prepared  by the  Trustee  (or its  custodian),  and the  Trustee  shall have no
further  responsibility  with  respect to the  Mortgage  File  relating  to such
Deleted Mortgage Loan.

     (b)  With  respect  to  each  Qualifying  Substitute  Mortgage  Loan  to be
delivered  to the  Trustee  (or its  custodian)  pursuant  to the  terms of this
Article II in exchange  for a Deleted  Mortgage  Loan:  (i) the  Depositor,  the
applicable  Transferor or Lehman  Capital,  as  applicable,  must deliver to the
Trustee (or its  custodian)  the  Mortgage  File for the  Qualifying  Substitute
Mortgage Loan containing the documents set forth in Section 2.01(b) along with a
written  certification  certifying  as to the delivery of such Mortgage File and
containing  the  granting  language set forth in Section  2.01(a);  and (ii) the
Depositor will be deemed to have made, with respect to such Qualified Substitute
Mortgage  Loan,  each  of the  representations  and  warranties  made by it with
respect to the related Deleted  Mortgage Loan. As soon as practicable  after the
delivery of any Qualifying Substitute Mortgage Loan hereunder, the Trustee shall
cause the  Assignment  of Mortgage  with respect to such  Qualifying  Substitute
Mortgage  Loan to be  recorded if  required  pursuant  to the first  sentence of
Section 2.01(c).

     (c)  Notwithstanding  any other provision of this  Agreement,  the right to
substitute  Mortgage  Loans  pursuant to this Article II shall be subject to the
additional  limitations that no substitution of a Qualifying Substitute Mortgage
Loan for a Deleted  Mortgage  Loan shall be made unless the Trustee has received
an  Opinion  of  Counsel  (at the  expense  of the  party  seeking  to make  the
substitution)  that,  under current law, such  substitution  will not (A) affect
adversely the status of any REMIC  established  hereunder as a REMIC,  or of the
related  "regular  interests" as "regular  interests" in any such REMIC,  or (B)
cause any such  REMIC to  engage in a  "prohibited  transaction"  or  prohibited
contribution  pursuant to the REMIC  Provisions.  Section 2. It is intended that
the conveyance of the Depositor's  right,  title and interest in and to property
constituting  the Trust Fund pursuant to this Agreement  shall  constitute,  and
shall be  construed  as, a sale of such  property  and not a grant of a security
interest  to  secure a loan.  However,  if such  conveyance  is  deemed to be in
respect of a loan, it is intended  that:  (1) the rights and  obligations of the
parties shall be established  pursuant to the terms of this  Agreement;  (2) the
Depositor  hereby  grants to the  Trustee  for the benefit of the Holders of the
Certificates a first priority security interest in all of the Depositor's right,
title and  interest in, to and under,  whether now owned or hereafter  acquired,
the Trust Fund and all proceeds of any and all property  constituting  the Trust
Fund to  secure  payment  of the  Certificates;  and (3)  this  Agreement  shall
constitute a security  agreement  under  applicable  law. If such  conveyance is
deemed  to be in  respect  of a loan and the  Trust  created  by this  Agreement
terminates  prior to the  satisfaction  of the claims of any Person  holding any
Certificate,  the security  interest created hereby shall continue in full force
and effect and the Trustee  shall be deemed to be the  collateral  agent for the
benefit  of such  Person,  and all  proceeds  shall  be  distributed  as  herein
provided.

     Section  2.06.  Grant  Clause.  (a) The  initial  Holder  (other  than  the
Placement  Agent or any nominee  thereof) of the Class X Certificate  shall have
the right to purchase defaulted Mortgage Loans from the Trust Fund as and to the
extent  provided  in the  Special  Servicing  Agreement.  Such  right  shall  be
transferable to and exercisable by subsequent Holders of the Class X Certificate
only upon  satisfaction  of the  conditions  set forth in the Special  Servicing
Agreement.

     (b) In addition to the purchase option provided under subsection (a) above,
the Special  Servicer and the initial Holder (other than the Placement  Agent or
any nominee thereof) of the Class X Certificate shall have the right to purchase
Severely  Delinquent  Loans from the Trust Fund as and to the extent provided in
the Special  Servicing  Agreement.  Such right of such  initial  Holder shall be
transferable to and exercisable by subsequent Holders of the Class X Certificate
only upon  satisfaction  of the  conditions  set forth in the Special  Servicing
Agreement.  The aggregate of any such  purchases of Mortgage  Loans  pursuant to
this  Section  2.07(b)  shall not exceed 5% of the Cut-off Date  Aggregate  Loan
Balance.

                                  ARTICLE III.

                                THE CERTIFICATES

     Section 3.01. The Certificates.  (a) The Certificates  shall be issuable in
registered  form only and shall be  securities  governed by Article 8 of the New
York Uniform  Commercial Code. The Book-Entry  Certificates will be evidenced by
one or more  certificates,  beneficial  ownership  of which  will be held in the
dollar  denominations in Certificate  Principal  Amount or Notional  Amount,  as
applicable,  or in the Percentage  Interests,  specified  herein.  Each Class of
Book-Entry   Certificates  will  be  issued  in  the  minimum  denominations  in
Certificate  Principal Amount specified in the Preliminary  Statement hereto and
in  integral  multiples  of $1 in  excess  thereof.  The  Class  X and  Class  R
Certificates  will each be  issued as a single  Certificate  and  maintained  in
definitive,  fully  registered  form  in a  denomination  equal  to  100% of the
Percentage Interest of such Class. The Certificates may be issued in the form of
typewritten certificates.

     (b) The Certificates shall be executed by manual or facsimile  signature on
behalf of the Trustee by an  authorized  officer.  Each  Certificate  shall,  on
original issue, be  authenticated by the Trustee upon the order of the Depositor
upon receipt by the Trustee of the Mortgage Files  described in Section 2.01. No
Certificate  shall be entitled to any benefit under this Agreement,  or be valid
for any purpose,  unless there  appears on such  Certificate  a  certificate  of
authentication  substantially  in the form  provided for herein,  executed by an
authorized officer of the Trustee or the Authenticating Agent, if any, by manual
signature,  and such  certification  upon any  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.  At any time and from time to time after the execution
and delivery of this Agreement,  the Depositor may deliver Certificates executed
by the Depositor to the Trustee or the  Authenticating  Agent for authentication
and the Trustee or the Authenticating  Agent shall authenticate and deliver such
Certificates as in this Agreement provided and not otherwise.

     Section 3.02.  Registration.  The Trustee is hereby  appointed,  and hereby
accepts its appointment as, Certificate Registrar in respect of the Certificates
and  shall  maintain  books  for  the  registration  and  for  the  transfer  of
Certificates  (the  "Certificate  Register").  The Trustee may appoint a bank or
trust company to act as  Certificate  Registrar.  A  registration  book shall be
maintained for the  Certificates  collectively.  The  Certificate  Registrar may
resign or be  discharged  or removed and a new  successor  may be  appointed  in
accordance with the procedures and  requirements  set forth in Sections 6.06 and
6.07 hereof with respect to the resignation, discharge or removal of the Trustee
and the  appointment  of a successor  Trustee.  The  Certificate  Registrar  may
appoint,  by a  written  instrument  delivered  to the  Holders  and the  Master
Servicer, any bank or trust company to act as co-registrar under such conditions
as  the  Certificate  Registrar  may  prescribe;  provided,  however,  that  the
Certificate   Registrar   shall  not  be  relieved  of  any  of  its  duties  or
responsibilities hereunder by reason of such appointment.

     Section  3.03.  Transfer and Exchange of  Certificates.  (a) A  Certificate
(other  than  Book-Entry  Certificates  which  shall be subject to Section  3.09
hereof) may be  transferred  by the Holder  thereof only upon  presentation  and
surrender of such  Certificate at the office of the  Certificate  Registrar duly
endorsed or  accompanied  by an  assignment  duly executed by such Holder or his
duly  authorized  attorney  in  such  form  as  shall  be  satisfactory  to  the
Certificate  Registrar.  Upon the transfer of any Certificate in accordance with
the  preceding  sentence,  the  Trustee  shall  execute,  and the Trustee or any
Authenticating  Agent shall  authenticate and deliver to the transferee,  one or
more new  Certificates of the same Class and evidencing,  in the aggregate,  the
same  aggregate   Certificate   Principal   Amount  as  the  Certificate   being
transferred.  No service  charge  shall be made to a  Certificateholder  for any
registration  of transfer of  Certificates,  but 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 registration of transfer of Certificates.

          (b) A  Certificate  may be  exchanged  by the Holder  thereof  for any
number of new  Certificates  of the same  Class,  in  authorized  denominations,
representing  in the  aggregate  the same  Certificate  Principal  Amount as the
Certificate  surrendered,  upon surrender of the  Certificate to be exchanged at
the office of the  Certificate  Registrar  duly  endorsed  or  accompanied  by a
written  instrument  of  transfer  duly  executed  by such  Holder  or his  duly
authorized  attorney  in  such  form  as  is  satisfactory  to  the  Certificate
Registrar.  Certificates delivered upon any such exchange will evidence the same
obligations,  and will be  entitled to the same  rights and  privileges,  as the
Certificates surrendered. No service charge shall be made to a Certificateholder
for any exchange of  Certificates,  but 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  exchange  of   Certificates.   Whenever  any
Certificates are so surrendered for exchange, the Trustee shall execute, and the
Trustee or the  Authenticating  Agent shall  authenticate,  date and deliver the
Certificates  which the  Certificateholder  making the  exchange  is entitled to
receive.

          (c) By acceptance of a Restricted  Certificate,  whether upon original
issuance or subsequent transfer, each Holder of such a Certificate  acknowledges
the  restrictions  on the  transfer of such  Certificate  set forth  thereon and
agrees that it will  transfer such a Certificate  only as provided  herein.  The
following restrictions shall apply with respect to the transfer and registration
of transfer of a Restricted  Certificate to a transferee  that takes delivery in
the form of a Definitive Certificate:

                    (i) The Certificate Registrar shall register the transfer of
                    a Restricted Certificate if the requested transfer is (x) to
                    the  Depositor or the  Placement  Agent,  an  affiliate  (as
                    defined  in  Rule  144(a)(1)  under  the  1933  Act)  of the
                    Depositor  or the  Placement  Agent or (y)  being  made to a
                    "qualified  institutional  buyer"  as  defined  in Rule 144A
                    under the  Securities Act of 1933, as amended (the "Act") by
                    a transferor who has provided the Trustee with a certificate
                    in the form of Exhibit F hereto; and

          (i)  The  Certificate  Registrar  shall  register  the  transfer  of a
Restricted Certificate if the requested transfer is being made to an "accredited
investor"  under Rule  501(a)(1),  (2), (3) or (7) under the Act by a transferor
who  furnishes to the Trustee a letter of the  transferee  substantially  in the
form of Exhibit G hereto.

          (d)(i) No transfer of an ERISA-Restricted Certificate in the form of a
Definitive  Certificate  shall be made to any  Person  unless  the  Trustee  has
received (A) a  certificate  substantially  in the form of Exhibit H hereto from
such transferee or (B) an Opinion of Counsel satisfactory to the Trustee and the
Depositor to the effect that the purchase and holding of such a Certificate will
not  constitute  or result in the assets of the Trust  Fund  being  deemed to be
"plan  assets"  subject to the  prohibited  transactions  provisions of ERISA or
Section  4975 of the Code and will not subject the Trustee or the  Depositor  to
any  obligation  in addition to those  undertaken  in the  Agreement;  provided,
however,  that the Trustee will not require such  certificate  or opinion in the
event that, as a result of a change of law or otherwise, counsel satisfactory to
the Trustee has  rendered an opinion to the effect that the purchase and holding
of an  ERISA-Restricted  Certificate by a Plan or a Person that is purchasing or
holding  such a  Certificate  with the assets of a Plan will not  constitute  or
result in a prohibited  transaction under ERISA or Section 4975 of the Code. The
preparation and delivery of the certificate and opinions referred to above shall
not  be  an  expense  of  the  Trust  Fund,   the  Trustee  or  the   Depositor.
Notwithstanding  the foregoing,  no opinion or certificate shall be required for
the initial issuance of the ERISA-Restricted Certificates.

     (e) As a  condition  of the  registration  of  transfer  or exchange of any
Certificate,  the  Certificate  Registrar  may  require the  certified  taxpayer
identification  number of the owner of the  Certificate and the payment of a sum
sufficient to cover any tax or other  governmental  charge imposed in connection
therewith;  provided,  however,  that the  Certificate  Registrar  shall have no
obligation  to require such payment or to determine  whether or not any such tax
or  charge  may  be  applicable.   No  service  charge  shall  be  made  to  the
Certificateholder for any registration, transfer or exchange of Certificate. (f)
Notwithstanding   anything  to  the  contrary   contained  herein,  no  Residual
Certificate may be owned, pledged or transferred,  directly or indirectly, by or
to a Disqualified Organization.  Prior to and as a condition of the registration
of any  transfer,  sale or other  disposition  of a  Residual  Certificate,  the
proposed  transferee  shall deliver to the Trustee an affidavit in substantially
the form attached hereto as Exhibit D-1 representing and warranting, among other
things, that such transferee is neither a Disqualified Organization nor an agent
or nominee acting on behalf of a Disqualified Organization (any such transferee,
a "Permitted  Transferee"),  and the proposed  transferor  shall  deliver to the
Trustee an affidavit in  substantially  the form attached hereto as Exhibit D-2.
In addition, the Trustee may (but shall have no obligation to) require, prior to
and as a condition of any such transfer, the delivery by the proposed transferee
of  an  Opinion  of  Counsel,   addressed  to  the  Depositor  and  the  Trustee
satisfactory  in  form  and  substance  to the  Depositor,  that  such  proposed
transferee or, if the proposed  transferee is an agent or nominee,  the proposed
beneficial  owner,  is  not a  Disqualified  Organization.  Notwithstanding  the
registration  in the  Certificate  Register  of any  transfer,  sale,  or  other
disposition of a Residual Certificate to a Disqualified Organization or an agent
or nominee acting on behalf of a Disqualified  Organization,  such  registration
shall  be  deemed  to be  of no  legal  force  or  effect  whatsoever  and  such
Disqualified Organization (or such agent or nominee) shall not be deemed to be a
Certificateholder for any purpose hereunder,  including, but not limited to, the
receipt of distributions on such Residual Certificate.  The Trustee shall not be
under any liability to any person for any registration or transfer of a Residual
Certificate to a Disqualified  Organization  or for the maturity of any payments
due on such Residual  Certificate  to the Holder thereof or for taking any other
action with respect to such Holder under the  provisions  of the  Agreement,  so
long as the  transfer  was effected in  accordance  with this  Section  3.03(f),
unless the Trustee  shall have actual  knowledge at the time of such transfer or
the time of such payment or other action that the  transferee is a  Disqualified
Organization (or an agent or nominee thereof).  The Trustee shall be entitled to
recover  from any  Holder  of a  Residual  Certificate  that was a  Disqualified
Organization  (or an agent or nominee thereof) at the time it became a Holder or
any subsequent time it became a Disqualified  Organization  all payments made on
such  Residual  Certificate  at and after  either  such times (and all costs and
expenses,  including but not limited to attorneys' fees,  incurred in connection
therewith). Any payment (not including any such costs and expenses) so recovered
by the Trustee shall be paid and delivered to the last preceding  Holder of such
Residual Certificate.

     If any purported  transferee shall become a registered Holder of a Residual
Certificate  in violation of the provisions of this Section  3.03(f),  then upon
receipt of written  notice to the Trustee that the  registration  of transfer of
such Residual Certificate was not in fact permitted by this Section 3.03(f), the
last preceding  Permitted  Transferee  shall be restored to all rights as Holder
thereof  retroactive  to the  date  of such  registration  of  transfer  of such
Residual Certificate.  The Trustee shall be under no liability to any Person for
any  registration  of  transfer  of a Residual  Certificate  that is in fact not
permitted  by  this  Section  3.03(f),  for  making  any  payment  due  on  such
Certificate to the registered Holder thereof or for taking any other action with
respect to such Holder  under the  provisions  of this  Agreement so long as the
transfer was registered upon receipt of the affidavit described in the preceding
paragraph of this Section 3.03(f).

     (g) Each  Holder of a Residual  Certificate,  by such  Holder's  acceptance
thereof, shall be deemed for all purposes to have consented to the provisions of
this section.

     Section 3.04. Cancellation of Certificates. Any Certificate surrendered for
registration  of  transfer  or  exchange  shall be  cancelled  and  retained  in
accordance with normal retention policies with respect to cancelled certificates
maintained by the Trustee or the Certificate Registrar.

     Section  3.05.  Replacement  of  Certificates.  If (i) any  Certificate  is
mutilated and is surrendered to the Trustee or any Authenticating  Agent or (ii)
the Trustee or any Authenticating Agent receives evidence to its satisfaction of
the destruction, loss or theft of any Certificate, and there is delivered to the
Trustee  or the  Authenticating  Agent  such  security  or  indemnity  as may be
required by them to save each of them  harmless,  then, in the absence of notice
to the  Depositor  and any  Authenticating  Agent that such  destroyed,  lost or
stolen Certificate has been acquired by a bona fide purchaser, the Trustee shall
execute  and the Trustee or any  Authenticating  Agent  shall  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 Certificate  Principal
Amount.  Upon the issuance of any new  Certificate  under this Section 3.05, the
Trustee and Authenticating  Agent 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  expenses  (including the fees and expenses of the Trustee
or the Authenticating  Agent) connected therewith.  Any replacement  Certificate
issued pursuant to this Section 3.05 shall constitute  complete and indefeasible
evidence of ownership in the  applicable  Trust Fund, as if  originally  issued,
whether or not the lost,  stolen or destroyed  Certificate shall be found at any
time.

     Section 3.06.  Persons Deemed Owners.  Subject to the provisions of Section
3.09  with  respect  to  Book-Entry  Certificates,  the  Depositor,  the  Master
Servicer,  the Trustee,  the Certificate  Registrar and any agent of any of them
may treat the Person in whose name any  Certificate is registered upon the books
of the Certificate Registrar as the owner of such Certificate for the purpose of
receiving  distributions  pursuant to  Sections  5.01 and 5.02 and for all other
purposes  whatsoever,  and  neither  the  Depositor,  the Master  Servicer,  the
Trustee,  the  Certificate  Registrar  nor any  agent  of any of them  shall  be
affected by notice to the contrary.

     Section  3.07.  Temporary  Certificates.  (a)  Pending the  preparation  of
definitive  Certificates,  upon the order of the  Depositor,  the Trustee  shall
execute and shall  authenticate  and  deliver  temporary  Certificates  that are
printed, lithographed,  typewritten,  mimeographed or otherwise produced, in any
authorized   denomination,   substantially   of  the  tenor  of  the  definitive
Certificates  in lieu of which they are issued and with such  variations  as the
authorized  officers executing such Certificates may determine,  as evidenced by
their execution of such Certificates.

     (b)  If  temporary  Certificates  are  issued,  the  Depositor  will  cause
definitive  Certificates to be prepared without  unreasonable  delay.  After the
preparation  of definitive  Certificates,  the temporary  Certificates  shall be
exchangeable  for  definitive  Certificates  upon  surrender  of  the  temporary
Certificates  at the  office  or  agency of the  Trustee  without  charge to the
Holder.   Upon  surrender  for   cancellation  of  any  one  or  more  temporary
Certificates, the Trustee shall execute and authenticate and deliver in exchange
therefor  a  like   aggregate   Certificate   Principal   Amount  of  definitive
Certificates  of the  same  Class  in the  authorized  denominations.  Until  so
exchanged,  the temporary  Certificates shall in all respects be entitled to the
same benefits under this Agreement as definitive Certificates of the same Class.

     Section 3.08. Appointment of Paying Agent. The Trustee may appoint a Paying
Agent  (which may be the  Trustee)  for the purpose of making  distributions  to
Certificateholders  hereunder.  The Trustee  shall  cause such  Paying  Agent to
execute  and  deliver to the Trustee an  instrument  in which such Paying  Agent
shall agree with the Trustee  that such Paying  Agent will hold all sums held by
it for the payment to Certificateholders in an Eligible Account in trust for the
benefit of the Certificateholders entitled thereto until such sums shall be paid
to the Certificateholders.  All funds remitted by the Trustee to any such Paying
Agent   for   the   purpose   of   making   distributions   shall   be  paid  to
Certificateholders  on each  Distribution Date and any amounts not so paid shall
be returned on such Distribution Date to the Trustee. If the Paying Agent is not
the  Trustee,  the Trustee  shall cause to be remitted to the Paying Agent on or
before the Business Day prior to each  Distribution  Date,  by wire  transfer in
immediately  available funds,  the funds to be distributed on such  Distribution
Date.  Any Paying  Agent  shall be either a bank or trust  company or  otherwise
authorized under law to exercise corporate trust powers.

     Section  3.09.  Book-Entry  Certificates.  (a)  Each  Class  of  Book-Entry
Certificates, upon original issuance, shall be issued in the form of one or more
typewritten  Certificates  representing  the  Book-Entry  Certificates,   to  be
delivered to The Depository Trust Company,  the initial Clearing Agency,  by, or
on behalf of, the Depositor.  The  Book-Entry  Certificates  shall  initially be
registered  on the  Certificate  Register  in the  name  of the  nominee  of the
Clearing Agency, and no Certificate Owner will receive a definitive  certificate
representing such Certificate  Owner's interest in the Book-Entry  Certificates,
except as provided in Section 3.09(c).  Unless Definitive Certificates have been
issued to  Certificate  Owners of  Book-Entry  Certificates  pursuant to Section
3.09(c):

     (i) the provisions of this Section 3.09 shall be in full force and effect;

          (i)  the  Depositor,  the  Master  Servicer,  the  Paying  Agent,  the
Registrar  and the Trustee may deal with the  Clearing  Agency for all  purposes
(including the making of  distributions  on the Book-Entry  Certificates) as the
authorized  representatives  of the  Certificate  Owners and the Clearing Agency
shall be  responsible  for  crediting  the amount of such  distributions  to the
accounts of such  Persons  entitled  thereto,  in  accordance  with the Clearing
Agency's normal procedures;

          (ii) to the extent that the  provisions  of this Section 3.09 conflict
with any other provisions of this Agreement, the provisions of this Section 3.09
shall  control;  and (iii) the rights of  Certificate  Owners shall be exercised
only through the Clearing Agency and the Clearing Agency  Participants and shall
be limited to those  established by law and agreements  between such Certificate
Owners and the Clearing Agency and/or the Clearing Agency  Participants.  Unless
and until Definitive  Certificates  are issued pursuant to Section 3.09(c),  the
initial Clearing Agency will make book-entry transfers among the Clearing Agency
Participants and receive and transmit distributions of principal of and interest
on the  Book-Entry  Certificates  to  such  Clearing  Agency  Participants.  (b)
Whenever notice or other  communication  to the  Certificateholders  is required
under this Agreement,  unless and until Definitive  Certificates shall have been
issued to Certificate Owners pursuant to Section 3.09(c), the Trustee shall give
all such notices and  communications  specified herein to be given to Holders of
the Book-Entry Certificates to the Clearing Agency.

     (c) If (i) (A) the  Depositor  advises  the  Trustee  in  writing  that the
Clearing  Agency  is no  longer  willing  or  able  to  discharge  properly  its
responsibilities  with  respect  to the  Book-Entry  Certificates,  and  (B) the
Trustee or the  Depositor  is unable to locate a qualified  successor,  (ii) the
Depositor,  at its  option,  advises  the  Trustee in writing  that it elects to
terminate the book-entry  system through the Clearing  Agency or (iii) after the
occurrence of an Event of Default,  Certificate Owners  representing  beneficial
interests  aggregating  not less  than 50% of the  Class  Certificate  Principal
Amount of a Class of Book-Entry  Certificates  identified as such to the Trustee
by an Officer's  Certificate from the Clearing Agency advise the Trustee and the
Clearing  Agency through the 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  Certificate  Owners  of  a  Class  of  Book-Entry
Certificates,  the Trustee  shall notify or cause the  Certificate  Registrar to
notify the Clearing Agency to effect  notification  to all  Certificate  Owners,
through the  Clearing  Agency,  of the  occurrence  of any such event and of the
availability  of Definitive  Certificates to Certificate  Owners  requesting the
same.  Upon  surrender  to the  Trustee of the  Book-Entry  Certificates  by the
Clearing  Agency,  accompanied by  registration  instructions  from the Clearing
Agency for  registration,  the Trustee shall issue the Definitive  Certificates.
Neither the  Depositor nor the Trustee shall be liable for any delay in delivery
of such  instructions  and may  conclusively  rely on, and shall be protected in
relying on, such instructions.  Upon the issuance of Definitive Certificates all
references herein to obligations imposed upon or to be performed by the Clearing
Agency shall be deemed to be imposed upon and  performed by the Trustee,  to the
extent applicable,  with respect to such Definitive Certificates and the Trustee
shall recognize the holders of the Definitive Certificates as Certificateholders
hereunder.

                                   ARTICLE IV.

                        ADMINISTRATION OF THE TRUST FUND

     Section  4.01.  Collection  Account.  (a) On the Closing  Date,  the Master
Servicer shall open and shall thereafter  maintain an account held in trust (the
"Collection Account"),  entitled "Norwest Bank Minnesota,  National Association,
as Master Servicer,  in trust for the benefit of the Holders of Structured Asset
Securities Corporation Mortgage Pass-Through  Certificates,  Series 1998-4." The
Collection  Account shall relate solely to the Certificates  issued by the Trust
Fund  hereunder,  and funds in such  Collection  Account shall not be commingled
with any other monies.

     (b) The  Collection  Account shall be an Eligible  Account.  If an existing
Collection  Account ceases to be an Eligible Account,  the Master Servicer shall
establish a new  Collection  Account that is an Eligible  Account within 30 days
and transfer all funds on deposit in such existing  Collection Account into such
new Collection Account.

     (c) The Master  Servicer will give to the Trustee  prior written  notice of
the name and  address  of the  depository  institution  at which the  Collection
Account is maintained and the account  number of such  Collection  Account.  The
Master Servicer shall take such actions as are necessary to cause the depository
institution  holding the Collection  Account to hold such account in the name of
the Trustee  (subject to such Master  Servicer's  right to direct  payments  and
investments and its rights of withdrawal)  under this Agreement.  On the Deposit
Date,  the entire  amount on  deposit  in the  Collection  Account  (subject  to
permitted  withdrawals  set forth in  Section  4.02),  other  than  amounts  not
included in the Total  Distribution  Amount for such Distribution Date, shall be
remitted  to the  Trustee  for  deposit  into the  Certificate  Account  by wire
transfer in immediately available funds. The Master Servicer, at its option, may
choose to make daily remittances from the Collection  Account to the Trustee for
deposit into the Certificate  Account.  (d) The Master Servicer shall deposit or
cause to be deposited  into the Collection  Account,  no later than the Business
Day following the Closing Date, any amounts  representing  Scheduled Payments on
the  Mortgage  Loans due after  the  Cut-off  Date and  received  by the  Master
Servicer on or before the Closing Date.  Thereafter,  the Master  Servicer shall
deposit or cause to be deposited  in the  Collection  Account on the  applicable
Remittance  Date the  following  amounts  received or payments made by it (other
than in respect of principal  of and  interest on the  Mortgage  Loans due on or
before the Cut-Off  Date):

          (i)  all  payments  on  account  of  principal,   including  Principal
          Prepayments and late collections, on the Mortgage Loans;

          (i) all payments on account of interest on the  Mortgage  Loans (other
than payments due prior to the Cut-off Date),  including  prepayment premiums or
penalties,  net of the  Servicing  Fee and Master  Servicing Fee with respect to
each such Mortgage  Loan,  but only to the extent of the amount  permitted to be
withdrawn or withheld from the  Collection  Account in accordance  with Sections
5.04 and 9.21;

          (ii) any  unscheduled  payment  or other  recovery  with  respect to a
Mortgage  Loan not  otherwise  specified in this  paragraph  (d),  including all
Liquidation  Proceeds with respect to the Mortgage  Loans and REO Property,  and
all amounts  received in connection with the operation of any REO Property,  net
of any unpaid  Servicing  Fees and Master  Servicing  Fees with  respect to such
Mortgage  Loans (but only to the extent of the amount  permitted to be withdrawn
or withheld from the  Collection  Account in  accordance  with Sections 5.04 and
9.21);

          (iii) all  Insurance  Proceeds;

                    (v) all Advances made by the Master Servicer or any Servicer
                    pursuant to Section 5.04; and

          (iv) all proceeds of any Mortgage Loan  repurchased  by the Depositor,
Lehman Capital, the Master Servicer or any other Person.

     (e) Funds in the Collection Account may be invested in Eligible Investments
(selected by and at the written  direction of the Master  Servicer)  which shall
mature not later than the earlier of (a) the Deposit  Date  (except that if such
Eligible  Investment is an  obligation  of the Trustee or the Paying  Agent,  if
other than the  Trustee,  and such  Collection  Account is  maintained  with the
Trustee  or the Paying  Agent,  if other than the  Trustee,  then such  Eligible
Investment shall mature not later than such applicable Distribution Date) or (b)
the day on which  the  funds  in such  Collection  Account  are  required  to be
remitted to the Trustee for deposit into the Certificate  Account,  and any such
Eligible Investment shall not be sold or disposed of prior to its maturity.  All
such  Eligible  Investments  shall  be made in the name of the  Trustee  (in its
capacity as such) or its  nominee.  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, subject to Section 5.05, and shall
not be part of the Trust Fund.  The amount of any losses  incurred in respect of
any such investments shall be deposited in such Collection Account by the Master
Servicer  out of its own funds,  without  any right of  reimbursement  therefor,
immediately  as  realized.   The  foregoing  requirements  for  deposit  in  the
Collection  Account are exclusive,  it being understood and agreed that, without
limiting the generality of the  foregoing,  payments of interest on funds in the
Collection  Account  and  payments  in  the  nature  of  late  payment  charges,
assumption fees and other  incidental fees and charges  relating to the Mortgage
Loans (other than prepayment premiums or penalties) need not be deposited by the
Master  Servicer  in the  Collection  Account  and may be retained by the Master
Servicer or the applicable Servicer as additional servicing compensation. If the
Master Servicer deposits in the Collection Account any amount not required to be
deposited therein,  it may at any time withdraw such amount from such Collection
Account.

     Section 4.02.  Application of Funds in the Collection  Account.  The Master
Servicer may, from time to time, make, or cause to be made, withdrawals from the
Collection Account for the following purposes:

                    (i) to reimburse itself or any Servicer for Advances made by
                    it or by such Servicer  pursuant to Section 5.04; the Master
                    Servicer's  right  to  reimburse  itself  pursuant  to  this
                    subclause  (i)  is  limited  to  amounts  received  on or in
                    respect of particular  Mortgage Loans  (including,  for this
                    purpose,   Liquidation  Proceeds  and  amounts  representing
                    Insurance  Proceeds with respect to the property  subject to
                    the related  Mortgage)  which represent late recoveries (net
                    of the  applicable  Servicing  Fee and the Master  Servicing
                    Fee) of payments of principal or interest  respecting  which
                    any such Advance was made, it being understood,  in the case
                    of any such  reimbursement,  that the Master  Servicer's  or
                    Servicer's right thereto shall be prior to the rights of the
                    Certificateholders;

          (i) to reimburse itself or any Servicer, following a final liquidation
of a Mortgage Loan,  for any amounts  advanced by it or by such Servicer that it
determines in good faith will not be recoverable from amounts  representing late
recoveries  of  payments of  principal  or interest  respecting  the  particular
Mortgage Loan as to which such Advance was made or from Liquidation  Proceeds or
Insurance  Proceeds with respect to such Mortgage Loan, it being understood,  in
the case of any such  reimbursement,  that such Master  Servicer's or Servicer's
right thereto shall be prior to the rights of the Certificateholders;

          (ii) to reimburse  itself from  Liquidation  Proceeds for  Liquidation
Expenses and for amounts expended by it pursuant to Sections 9.20 and 9.22(a) in
good faith in connection  with the  restoration of damaged  property and, to the
extent that  Liquidation  Proceeds  after such  reimbursement  exceed the unpaid
principal balance of the related Mortgage Loan, together with accrued and unpaid
interest thereon at the applicable  Mortgage Rate less the applicable  Servicing
Fee and the Master  Servicing  Fee for such  Mortgage  Loan to the Due Date next
succeeding  the date of its  receipt  of such  Liquidation  Proceeds,  to pay to
itself out of such excess the amount of any unpaid assumption fees, late payment
charges or other  Mortgagor  charges on the related  Mortgage Loan and to retain
any excess remaining thereafter as additional servicing  compensation,  it being
understood,  in the case of any such reimbursement or payment,  that such Master
Servicer's right thereto shall be prior to the rights of the Certificateholders;


          (iii)  in the  event  it has  elected  not to pay  itself  the  Master
Servicing  Fee out of any  Mortgagor  payment on account  of  interest  or other
recovery with respect to a particular Mortgage Loan prior to the deposit of such
Mortgagor  payment or recovery in the Collection  Account,  to pay to itself the
Master Servicing Fee for each  Distribution Date and any unpaid Master Servicing
Fees for prior Distribution Dates, as reduced pursuant to Section 5.05, from any
Mortgagor  payment as to interest or such other  recovery  with  respect to that
Mortgage Loan, as is permitted by this Agreement;

                    (v)  to  reimburse  itself  for  expenses  incurred  by  and
                    recoverable  by  or  reimbursable  to it  or  such  Servicer
                    pursuant to Section  9.04,  9.06,  9.16 or  9.22(a),  and to
                    reimburse  itself  for  any  expenses   reimbursable  to  it
                    pursuant to Section 10.01(c);

          (iv)  to  pay  to  the  Depositor,   Lehman  Capital,  the  applicable
Transferor,  the Special Servicer or the Directing Holder,  as applicable,  with
respect to each Mortgage Loan or REO Property  acquired in respect  thereof that
has been purchased pursuant to this Agreement,  all amounts received thereon and
not distributed on the date on which the related repurchase was effected, and to
pay to the  applicable  Person  any  Advances  to the  extent  specified  in the
definition of Purchase Price;

          (v) subject to Section  5.04,  to pay to itself  income  earned on the
investment of funds deposited in the Collection  Account;  

          (vi) to make payments to the Trustee for deposit into the  Certificate
Account in the amounts and in the manner provided for in Section 4.04;  

          (vii) to make payment to itself and others  pursuant to any  provision
of this  Agreement;  

                    (x) to withdraw  funds  deposited in error in the Collection
                    Account;

          (viii) to clear and  terminate  any  Collection  Account  pursuant  to
Section 7.02;

          (ix) to reimburse a successor  Master Servicer (solely in its capacity
as  successor  Master  Servicer),  for  any  fee  or  advance  occasioned  by  a
termination  of the Master  Servicer,  and the  assumption of such duties by the
Trustee or a successor  Master  Servicer  appointed  by the Trustee  pursuant to
Section 6.14, in each case to the extent not reimbursed by the terminated Master
Servicer, it being understood, in the case of any such reimbursement or payment,
that the right of the Master  Servicer or the Trustee  thereto shall be prior to
the rights of the Certificateholders; and

          (x) to  reimburse  any  Servicer  for such  amounts as are due thereto
under the applicable  Servicing  Agreement and have not been retained by or paid
to such  Servicer,  to the  extent  provided  in such  Servicing  Agreement. 

     In connection with  withdrawals  pursuant to subclauses  (i), (ii),  (iii),
(iv) and (vi) above, the Master Servicer's or Servicer's  entitlement thereto is
limited to  collections  or other  recoveries on the related  Mortgage Loan. The
Master Servicer shall therefore keep and maintain a separate accounting for each
Mortgage Loan it master  services for the purpose of justifying  any  withdrawal
from the Collection  Account it maintains  pursuant to such subclause (i), (ii),
(iii), (iv) and (vi).

     Section 4.03. Reports to Certificateholders. (a) On each Distribution Date,
the Trustee  shall  deliver or cause to be delivered by first class mail to each
Certificateholder  a written  report  setting forth the  following  information,
which   information  the  Master  Servicer  will  determine  (on  the  basis  of
information  obtained  from the  Servicers)  and deliver to the Trustee no later
than one Business Day prior to such Distribution Date:

                    (i) the aggregate  amount of the  distribution to be made on
                    such  Distribution  Date to the  Holders  of each  Class  of
                    Certificates,   to  the  extent  applicable,   allocable  to
                    principal  on  the  Mortgage  Loans,  including  Liquidation
                    Proceeds and  Insurance  Proceeds,  stating  separately  the
                    amount  attributable  to  scheduled  principal  payments and
                    unscheduled payments in the nature of principal;

          (i)  the  aggregate  amount  of the  distribution  to be  made on such
Distribution  Date to the Holders of each Class of Certificates  (other than any
Class of Principal Only Certificates) allocable to interest;

          (ii) the  amount,  if any, of any  distribution  to the Holders of the
Class X Certificate and the Residual Certificate;

          (iii) (A) the aggregate amount of any Advances  required to be made by
or on behalf of the  Master  Servicer  or any  Servicer  (or the  Trustee)  with
respect to such  Distribution  Date,  (B) the aggregate  amount of such Advances
actually made, and (C) the amount, if any, by which (A) above exceeds (B) above;

                    (v) the  Aggregate  Loan Balance as of the close of business
                    on the  last day of the  related  Collection  Period,  after
                    giving  effect to payments  allocated to principal  reported
                    under clause (i) above;

          (iv) the Class  Certificate  Principal  Amount (or Aggregate  Notional
Amount) of each Class of  Certificates,  to the  extent  applicable,  as of such
Distribution  Date  after  giving  effect to  payments  allocated  to  principal
reported under clause (i) above,  separately identifying any reduction of any of
the foregoing Certificate Principal Amounts due to Applied Loss Amounts:

          (v) any Realized  Losses  realized with respect to the Mortgage  Loans
(x) in the  applicable  Prepayment  Period  and (y) in the  aggregate  since the
Cut-off Date;

          (vi) the  amount of the  Master  Servicing  Fees,  Servicing  Fees and
Trustee  Fee paid  during  the  Collection  Period  to which  such  distribution
relates;

          (vii) the number and aggregate Scheduled Principal Balance of Mortgage
Loans,  as  reported  to the  Trustee  by the  Master  Servicer,  (a)  remaining
outstanding (b) delinquent 30 to 59 days on a contractual  basis, (c) delinquent
60 to 89  days on a  contractual  basis,  (d)  delinquent  90 or more  days on a
contractual  basis,  and  (e) as to  which  foreclosure  proceedings  have  been
commenced  as of the close of business on the last  Business Day of the calendar
month  immediately  preceding the month in which such  Distribution Date occurs;

                    (x) the deemed principal  balance of each REO Property as of
                    the  close  of  business  on the  last  Business  Day of the
                    calendar month immediately preceding the month in which such
                    Distribution Date occurs;

          (viii) with respect to any  Mortgage  Loan that became an REO Property
during the preceding calendar month, the principal balance of such Mortgage Loan
and the  number  of such  Mortgage  Loans  as of the  close of  business  on the
Distribution Date in such preceding month;

          (ix) with respect to  substitution  of Mortgage Loans in the preceding
calendar month, the Scheduled  Principal  Balance of each Deleted Mortgage Loan,
and of each Qualifying  Substitute Mortgage Loan; (x) the aggregate  outstanding
Carryforward Interest, Net Prepayment Interest Shortfalls, Basis Risk Shortfalls
and  Unpaid  Basis  Risk  Shortfalls,   if  any,  if  any,  for  each  Class  of
Certificates,  after giving effect to the distribution made on such Distribution
Date;

          (xi) the  Certificate  Interest Rate  applicable to such  Distribution
Date with respect to each Class of Certificates;

          (xii) if applicable, the amount of any shortfall (i.e., the difference
between the aggregate amounts of principal and interest which Certificateholders
would  have  received  if  there  were  sufficient   available  amounts  in  the
Certificate Account and the amounts actually distributed); and

          (xiii) any other "loan-level"  information for any Mortgage Loans that
are delinquent 90 or more days on a contractual  basis and any REO Property held
by the Trust that is reported by the Master Servicer to the Trustee.

     In the case of information  furnished  pursuant to subclauses (i), (ii) and
(viii)  above,  the amounts  shall be expressed as a dollar amount per $1,000 of
original principal amount of Certificates.

     In preparing or furnishing the foregoing  information  to the Trustee,  the
Master  Servicer shall be entitled to rely  conclusively  on the accuracy of the
information  or data  regarding the Mortgage  Loans and the related REO Property
that has been provided to the Master  Servicer by each Servicer,  and the Master
Servicer shall not be obligated to verify,  recompute,  reconcile or recalculate
any such information or data.

     On each  Distribution  Date,  the Trustee shall also deliver or cause to be
delivered  by first class mail to the  Depositor  a copy of the  above-described
written  report,  to the  following  address:  Mortgage  Finance  Group,  Lehman
Brothers Inc.,  Three World Financial  Center,  200 Vesey Street,  New York, New
York,  10285,  Attention:  Stanley  Labanowski,  or to such other address as the
Depositor may designate.

          (b)   Upon   the   reasonable   advance   written   request   of   any
Certificateholder  that is a savings and loan, bank or insurance company,  which
request,  if received by the Trustee,  will be promptly  forwarded to the Master
Servicer,  the Master Servicer shall provide,  or cause to be provided,  (or, to
the extent that such information or documentation is not required to be provided
by a Servicer under the  applicable  Servicing  Agreement,  shall use reasonable
efforts to obtain such  information and  documentation  from such Servicer,  and
provide) to such  Certificateholder  such reports and access to information  and
documentation  regarding  the  Mortgage  Loans  as  such  Certificateholder  may
reasonably deem necessary to comply with applicable regulations of the Office of
Thrift Supervision or its successor or other regulatory authorities with respect
to investment in the Certificates;  provided,  however, that the Master Servicer
shall be entitled to be  reimbursed  by such  Certificateholder  for such Master
Servicer's actual expenses incurred in providing such reports and access.

          (c)  Within 90 days,  or such  shorter  period as may be  required  by
statute or  regulation,  after the end of each calendar  year, the Trustee shall
send  to  each  Person  who  at  any  time  during  the  calendar   year  was  a
Certificateholder   of  record,   and  make  available  to  Certificate   Owners
(identified  as such by the  Clearing  Agency)  in  accordance  with  applicable
regulations,  a report  summarizing  the items  provided  to  Certificateholders
pursuant to Section 4.03(a) on an annual basis as may be required to enable such
Holders to prepare  their federal  income tax returns.  Such  information  shall
include  the  amount  of  original  issue  discount  accrued  on each  Class  of
Certificates  and  information  regarding  the  expenses of the Trust Fund.  The
Master Servicer shall provide the Trustee with such  information as is necessary
for the  Trustee to prepare  such  reports.

     Section 4.04.  Certificate  Account.  (a) The Trustee  shall  establish and
maintain  in its  name,  as  trustee,  a  special  deposit  trust  account  (the
"Certificate   Account"),   to  be  held  in  trust  for  the   benefit  of  the
Certificateholders  until disbursed pursuant to the terms of this Agreement. The
Certificate  Account shall be an Eligible Account.  If the existing  Certificate
Account  ceases to be an Eligible  Account,  the Trustee  shall  establish a new
Certificate  Account  that is an Eligible  Account  within 20 Business  Days and
transfer all funds on deposit in such existing Certificate Account into such new
Certificate  Account.  The  Certificate  Account  shall  relate  solely  to  the
Certificates issued hereunder and funds in the Certificate Account shall be held
separate  and  apart  from and  shall not be  commingled  with any other  monies
including,  without  limitation,  other  monies of the  Trustee  held under this
Agreement.

          (b) The  Trustee  shall  cause to be  deposited  into the  Certificate
Account on the day on which, or, if such day is not a Business Day, the Business
Day  immediately  following  the day on which,  any monies are  remitted  by the
Master  Servicer  to the  Trustee,  all such  amounts.  The  Trustee  shall make
withdrawals from the Certificate Account only for the following purposes:

          (i)       to withdraw amounts deposited in the Certificate  Account in
                    error;

          (ii)      to pay itself any  investment  income earned with respect to
                    funds  in  the  Certificate  Account  invested  in  Eligible
                    Investments  as set forth in  subsection  (c) below,  and to
                    make payment to itself and others  pursuant to any provision
                    of this Agreement;

          (i) to make  payments of the Master  Servicing  Fee (to the extent not
already  withheld  or  withdrawn  from  the  Collection  Account  by the  Master
Servicer) to the Master Servicer;

          (ii) to  make  distributions  to the  Certificateholders  pursuant  to
Article V; and

                    (v) to clear and terminate the Certificate  Account pursuant
                    to Section 7.02.

          (c) The Trustee shall invest,  or cause to be invested,  funds held in
the Certificate Account in Eligible Investments (which may be obligations of the
Trustee).  All such investments must mature no later than the next  Distribution
Date,  and shall not be sold or  disposed of prior to their  maturity.  All such
Eligible Investments will be made in the name of the Trustee (in its capacity as
such) or its  nominee.  All income and gain  realized  from any such  investment
shall be compensation  for the Trustee and shall be subject to its withdrawal on
order from time to time.  The amount of any  losses  incurred  in respect of any
such  investments  shall be paid by the Trustee  for deposit in the  Certificate
Account  out of its own  funds,  without  any right of  reimbursement  therefor,
immediately as realized.

     Section 4.05.  Determination of LIBOR. (a) If the outstanding  Certificates
include  any  LIBOR  Certificates,  then on each  LIBOR  Determination  Date the
Trustee shall  determine  LIBOR on the basis of the offered LIBOR  quotations of
the  Reference  Banks as of 11:00 a.m.  London time on such LIBOR  Determination
Date as follows:

                    (i) If on any  LIBOR  Determination  Date two or more of the
                    Reference Banks provide such offered  quotations,  LIBOR for
                    the next Accrual Period will be the arithmetic  mean of such
                    offered   quotations   (rounding  such  arithmetic  mean  if
                    necessary to the nearest five decimal places;

          (i) If on any  LIBOR  Determination  Date  only  one  or  none  of the
Reference  Banks  provides such offered  quotations,  LIBOR for the next Accrual
Period  will be  whichever  is the  higher  of (x)  LIBOR as  determined  on the
previous LIBOR Determination Date or (y) the Reserve Interest Rate. The "Reserve
Interest  Rate"  will be  either  (A) the  rate  per  annum  which  the  Trustee
determines to be the arithmetic mean (rounding such arithmetic mean if necessary
to the nearest five decimal  places) of the one-month  Eurodollar  lending rates
that New York City banks  selected by the Trustee are  quoting,  on the relevant
LIBOR  Determination  Date,  to the  principal  London  offices  of at least two
leading  banks in the  London  interbank  market  or (B) in the  event  that the
Trustee can determine no such arithmetic mean, the lowest  one-month  Eurodollar
lending rate that the New York City banks selected by the Trustee are quoting on
such LIBOR Determination Date to leading European banks; and

          (ii) If on any LIBOR Determination Date the Trustee is required but is
unable  to  determine  the  Reserve  Interest  Rate in the  manner  provided  in
paragraph  (ii)  above,  LIBOR  for the  next  Accrual  Period  will be LIBOR as
determined on the previous LIBOR Determination Date or, in the case of the first
LIBOR Determination Date, the Initial LIBOR Rate. 

     (b) The establishment of LIBOR by the Trustee and the Trustee's  subsequent
calculation of the  Certificate  Interest Rate or Rates  applicable to the LIBOR
Certificates for the relevant Accrual Period,  in the absence of manifest error,
will be final and binding.  In all cases, the Trustee may  conclusively  rely on
quotations of LIBOR for the  Reference  Banks as such  quotations  appear on the
display  designated  "LIUS01M" on the Bloomberg  Financial  Markets  Commodities
News.

     (c) As used herein, "Reference Banks" shall mean four leading banks engaged
in transactions in Eurodollar deposits in the international  Eurocurrency market
(i) with an  established  place of  business  in  London,  England,  (ii)  whose
quotations  appear on the "Bloomberg Screen LIUS01M Index Page" (as described in
the definition of LIBOR) on the applicable  LIBOR  Determination  Date and (iii)
which have been  designated  as such by the  Trustee and are able and willing to
provide such  quotations to the Trustee on each LIBOR  Determination  Date.  The
Reference  Banks  initially  shall be:  Barclay's  plc, Bank of Tokyo,  National
Westminster  Bank and Trust  Company and Bankers  Trust  Company.  If any of the
initial  Reference  Banks should be removed from the  Bloomberg  Screen  LIUS01M
Index Page or in any other way fail to meet the  qualifications  of a  Reference
Bank,  the Trustee shall use its best efforts to designate  alternate  Reference
Banks.

     (d) If (i) with respect to any LIBOR Determination Date LIBOR is determined
pursuant  to clause  (a)(iii) of this  Section  and (ii) on the next  succeeding
LIBOR  Determination  Date LIBOR would,  without giving effect to this paragraph
(d), be  determined  pursuant to such clause  (a)(iii),  then the Trustee  shall
select an alternative  interest rate index over which the Trustee has no control
that is used for  determining  Eurodollar  lending rates and is  calculated  and
published (or otherwise made available) by an independent  third party, and such
alternative  interest rate index shall constitute LIBOR for all purposes hereof.

     Section  4.06.  Determination  of  Fed  Funds  Average  Rate.  (a)  If  the
outstanding  Certificates include any Fed Funds Certificates,  then with respect
to each Fed Funds  Calculation  Period the Trustee shall determine the Fed Funds
Average Rate for such Fed Funds Calculation  Period by determining the Fed Funds
Rate for each related Fed Funds Business Day as follows:

     The Fed Funds Rate will reset on each Fed Funds  Business Day (each, a "Fed
Funds  Interest  Reset Date").  The Fed Funds Rate in effect on each day of each
Fed Funds  Calculation  Period  will be (a) if such day is a Fed Funds  Interest
Reset Date,  the Fed Funds Rate  determined  as of such Fed Funds  Business  Day
(each a "Fed Funds Interest  Determination  Date"),  or (b) if such day is not a
Fed Funds Interest  Reset Date, the Fed Funds Rate in effect on the  immediately
preceding Fed Funds Interest Reset Date.

                    (i) the rate with respect to the related Fed Funds  Interest
                    Determination  Date  (expressed  as a percentage  per annum)
                    that appears  opposite the caption "Federal Funds Effective"
                    on Telerate Page 120 (as defined below) as of 11:00 a.m. New
                    York City time on such Fed Funds Interest Reset Date;

          (i) if such rate does not appear on Telerate Page 120 as of 11:00 a.m.
New York City time on such Fed Funds  Interest  Reset  Date,  then the Fed Funds
Rate with  respect to such Fed Funds  Interest  Reset Date will be the rate with
respect to the related Fed Funds  Interest  Determination  Date  (expressed as a
percentage  per annum)  that  appears on Reuters  Screen  NYAA Page (as  defined
below) as of 11:00  a.m.  New York City  time on such Fed Funds  Interest  Reset
Date;

          (ii) if such rate does not  appear on Reuters  Screen  NYAA Page as of
11:00 a.m. New York City time on such Fed Funds Interest Reset Date, the Trustee
will request three leading  brokers of Federal  Funds  transactions  in New York
City to provide  the rate  (expressed  as a  percentage  per annum) for the last
transaction  in overnight  Federal Funds  arranged by such broker on the related
Fed Funds  Interest  Determination  Date.  If rates are  provided  by such three
brokers,  then the Fed Funds Rate with respect to such Fed Funds  Interest Reset
Date will be the arithmetic mean (rounded to the nearest one  hundred-thousandth
of one percentage point) of such rates; and

          (iii) if fewer than three such rates are provided,  then the Fed Funds
rate with  respect to such Fed Funds  Interest  Reset Date will be the Fed Funds
Rate for the  preceding  Fed Funds  Interest  Reset Date (or, in the case of the
first Fed  Funds  Interest  Reset  Date,  the  immediately  preceding  Fed Funds
Business Day on which a rate  appeared on Telerate  Page 120 as described in (a)
above).

     If a rate that initially appears on Telerate Page 120 or the Reuters Screen
NYAA  Page,  as the case may be,  as of 11:00  a.m.  New York  City  time on the
applicable  Fed Funds  Interest Reset Date is superseded on Telerate Page 120 or
the  Reuters  Screen NYAA Page,  as the case may be, by a corrected  rate before
12:00  noon New York City  time on such Fed  Funds  Interest  Reset  Date,  such
corrected rate as so superseded on the  applicable  page shall be the applicable
rate for  calculating  the applicable Fed Funds Rate for such Fed Funds Interest
Determination Date.

     (b) The  establishment of the Fed Funds Average Rate by the Trustee and the
Trustee's  subsequent  calculation  of the  Certificate  Interest  Rate or Rates
applicable to the Fed Funds Certificates for the relevant Accrual Period, in the
absence of manifest error, will be final and binding.  In all cases, the Trustee
may  conclusively  rely on  quotations  of the Fed Funds Rate as they  appear on
Telerate Page 120 or on the Reuters Screen NYAA Page, as applicable.

     The Fed Funds  Average  Rate for the  initial  Accrual  Period  will be the
Initial Fed Funds Average Rate.


                                   ARTICLE V.

                    DISTRIBUTIONS TO HOLDERS OF CERTIFICATES

     Section  5.01.   Distributions  Generally.  (a)  Subject  to  Section  7.01
respecting the final distribution on the Certificates, on each Distribution Date
the Trustee or the Paying Agent shall make distributions in accordance with this
Article  V.  Such   distributions   shall  be  made  by  check  mailed  to  each
Certificateholder's  address as it appears on the  Certificate  Register  of the
Certificate  Registrar  (which shall  initially be the Trustee) or, upon written
request  made to the Trustee at least three  Business  Days prior to the related
Distribution  Date  by  any   Certificateholder   owning  an  aggregate  initial
Certificate Principal Amount of at least $2,500,000,  or, in the case of a Class
X  Certificate,  a Percentage  Interest of 100%, by wire transfer in immediately
available  funds to an account  specified  in the  request and at the expense of
such  Certificateholder;  provided,  however,  that the  final  distribution  in
respect of any Certificate shall be made only upon presentation and surrender of
such  Certificate at the Corporate Trust Office.  Wire transfers will be made at
the expense of the Holder  requesting  such wire  transfer  by  deducting a wire
transfer fee from the related  distribution.  Notwithstanding such final payment
of principal of any of the Certificates,  the Residual  Certificates will remain
outstanding  until the  termination of each REMIC and the payment in full of all
other  amounts due with  respect to the Residual  Certificates  and at such time
such final payment in retirement of any Residual  Certificates will be made only
upon  presentation  and surrender of such  Certificate  at the  Corporate  Trust
Office of the Trustee or at the office of the New York Presenting  Agent. If any
payment  required to be made on the  Certificates is to be made on a day that is
not a  Business  Day,  then  such  payment  will be made on the next  succeeding
Business Day.

     (b)   All    distributions    or   allocations   made   with   respect   to
Certificateholders  within  each  Class  on  each  Distribution  Date  shall  be
allocated among the outstanding Certificates in such Class equally in proportion
to their  respective  initial Class  Certificate  Principal  Amounts (or initial
Notional Amounts).

     Section  5.02.  Distributions  from the  Certificate  Account.  (a) On each
Distribution  Date the  Trustee (or the Paying  Agent on behalf of the  Trustee)
shall withdraw from the Certificate  Account the Total  Distribution  Amount for
such date,  shall  allocate  such amount to the  interests  issued in respect of
REMIC 1, REMIC 2, and REMIC 3, and shall  distribute such amount as specified in
this Section.

     (b) On each  Distribution  Date, the Trustee shall  distribute the Interest
Remittance Amount for such date in the following order of priority:

                    (i) to the  Trustee,  the Trustee Fee for such  Distribution
                    Date;

          (i)  concurrently,  to the Class A-1 and  Class A-2  Certificates,  in
proportion to the amount of interest  distributable on each such Class,  Current
Interest  for each such Class and such  Distribution  Date and any  Carryforward
Interest for each such Class and such date;

          (ii) to the Class M-1  Certificates,  Current  Interest for such Class
and  such  Distribution  Date;

          (iii) to the Class M-2  Certificates,  Current Interest for such Class
and such  Distribution  Date;

                    (v) to the Class B Certificates,  Current  Interest for such
                    Class and such Distribution Date; and

          (iv) for  application  as part of  Monthly  Excess  Cashflow  for such
Distribution  Date, as provided in subsection (d) of this Section,  any Interest
Remittance  Amount remaining after  application  pursuant to clauses (i) through
(v) above.

     (c) On each  Distribution  Date, the Trustee shall distribute the Principal
Distribution Amount for such date as follows:

          (i)       On each  Distribution Date (x) prior to the Stepdown Date or
                    (y) with respect to which a Trigger Event has occurred,  the
                    Trustee shall distribute the Principal  Distribution  Amount
                    for such date in the following order of priority:

                    (1)  to  the  Class  A-1   Certificates,   until  the  Class
          Certificate Principal Amount of such Class has been reduced to zero;

                    (2)  to  the  Class  A-2   Certificates,   until  the  Class
          Certificate Principal Amount of such Class has been reduced to zero;

                    (3)  to  the  Class  M-1   Certificates,   until  the  Class
          Certificate Principal Amount of such Class has been reduced to zero;

                    (4)  to  the  Class  M-2   Certificates,   until  the  Class
          Certificate Principal Amount of such Class has been reduced to zero;

                    (5) to the Class B Certificates, until the Class Certificate
          Principal Amount of such Class has been reduced to zero; and

                    (6) for  application as part of Monthly Excess  Cashflow for
          such Distribution Date, as provided in subsection (d) of this Section,
          any Principal Distribution Amount remaining after application pursuant
          to clauses (1) through (5) above.

          (i) On each  Distribution  Date (x) on or after the Stepdown  Date and
(y) with respect to which a Trigger  Event has not  occurred,  the Trustee shall
distribute  the  Principal  Distribution  Amount for such date in the  following
order of priority:

                    (1) to the Class A-1 and Class A-2  Certificates,  an amount
          equal to the lesser of (A) the Principal  Distribution Amount for such
          Distribution Date and (B) the Senior Principal Distribution Amount for
          such date, in the following order of priority:

                              first,  to the Class A-1  Certificates,  until the
                    Class  Certificate  Principal  Amount of such Class has been
                    reduced to zero, and

                              second, to the Class A-2  Certificates,  until the
                    Class  Certificate  Principal  Amount of such Class has been
                    reduced to zero;

                    (2) to the Class M-1  Certificates,  an amount  equal to the
          lesser of (A) the excess of (I) the Principal  Distribution Amount for
          such Distribution  Date over (II) the amount  distributed to the Class
          A-1 and Class A-2  Certificates  on such date  pursuant  to clause (1)
          above and (B) the Class M-1  Principal  Distribution  Amount  for such
          date, until the Class  Certificate  Principal Amount of such Class has
          been reduced to zero;

                    (3) to the Class M-2  Certificates,  an amount  equal to the
          lesser of (A) the excess of (I) the Principal  Distribution Amount for
          such Distribution  Date over (II) the amount  distributed to the Class
          A-1,  Class A-2 and Class M-1  Certificates  on such date  pursuant to
          clauses (1) and (2) above and (B) the Class M-2 Principal Distribution
          Amount for such date, until the Class Certificate  Principal Amount of
          such Class has been reduced to zero;

                    (4) to the  Class B  Certificates,  an  amount  equal to the
          lesser of (A) the excess of (1) the Principal  Distribution Amount for
          such Distribution  Date over (II) the amount  distributed to the Class
          A-1,  Class  A-2,  Class M-1 and Class M-2  Certificates  on such date
          pursuant  to  clauses  (1),  (2) and  (3)  above  and (B) the  Class B
          Principal   Distribution   Amount  for  such  date,  until  the  Class
          Certificate  Principal  Amount of such Class has been reduced to zero;
          and

                    (5) for  application as part of Monthly Excess  Cashflow for
          such  Distribution  Date,  as in subsection  (d) of this Section,  any
          Principal  Distribution Amount remaining after application pursuant to
          clauses (1) through (4) above.

          Notwithstanding  the foregoing,  on any Distribution Date on which the
          Class  Certificate  Principal  Amount  of each  Class of  Certificates
          having a higher priority of distribution has been reduced to zero, any
          remaining  Principal  Distribution  Amount will be  distributed to the
          remaining  Classes of Class A-1,  Class A-2,  Class M-1, Class M-2 and
          Class B Certificates,  in the order of priority set forth above, until
          the Class  Certificate  Principal  Amount of each such  Class has been
          reduced to zero.

     (d) On each  Distribution  Date,  the Trustee shall  distribute the Monthly
Excess Cashflow for such date in the following order of priority:

                    (i) to the Basis Risk Reserve Fund, and then,  concurrently,
                    to the Class A-1 and Class A-2  Certificates,  in proportion
                    to any  outstanding  Basis Risk  Shortfall  and Unpaid Basis
                    Risk Shortfall with respect to each such Class,  and then to
                    the Class M-1, Class M-2 and Class B  Certificates,  in that
                    order,  from the Basis Risk Reserve Fund, in an amount equal
                    to the unpaid  amount of any Basis Risk  Shortfall  for such
                    date and any Unpaid Basis Risk  Shortfall  for such date, as
                    required by Section 5.08 of this Agreement;

          (i) to the extent of Monthly  Excess  Interest  for such  Distribution
Date, to fund the Extra Principal Distribution Amount for such date,

          (ii) to the Class M-1 Certificates, any Carryforward Interest for such
Class and such date;

          (iii) to the Class M-1  Certificates,  any  Deferred  Amount  for such
Class  and such  date;

                    (v) to the Class M-2 Certificates, any Carryforward Interest
                    for such Class and such date;

          (iv) to the Class M-2 Certificates, any Deferred Amount for such Class
and such date;

          (v) to the Class B Certificates,  any  Carryforward  Interest for such
Class and such date;

          (vi) to the Class B  Certificates,  any Deferred Amount for such Class
and such date;

          (vii) to the Special  Servicer,  any Special  Servicing Fee,  Extended
Special  Servicing Fee and Incentive Fee with respect to the related  Collection
Period, in each case as defined in the Special Servicing Compensation Agreement;

                    (x) to the Basis Risk Reserve  Fund,  an amount equal to the
                    Required Reserve Fund Deposit;

          (viii) to the Class X Certificate,  the Class X  Distributable  Amount
for such Distribution  Date,  together with any amounts withdrawn from the Basis
Risk  Reserve  Fund for  distribution  to the Class X  Certificates  pursuant to
Section 5.08(c) and (d) on such date;

          (ix) to the Directing Holder,  if any, on such Distribution  Date, the
Directing  Holder  Servicing Fee for such  Distribution  Date to the extent such
Directing  Holder  Servicing  Fee is due and payable  under Section 5.07 of this
Agreement; and

          (x) to the Class R  Certificate,  any  amount  remaining  on such date
after  application  pursuant to clauses (i) through  (xii) above.

     Section 5.03.  Allocation of Losses. On each  Distribution  Date, the Class
Certificate  Principal  Amount of each Class of Class M-1, Class M-2 and Class B
Certificates  will be reduced by the amount of any Applied  Loss Amount for such
date, in the following order of priority:

          (i) to the Class B Certificates, until the Class Certificate Principal
          Amount thereof has been reduced to zero;

                    (i)  to  the  Class  M-2   Certificates,   until  the  Class
          Certificate Principal Amount thereof has been reduced to zero; and

                    (ii)  to  the  Class  M-1  Certificates,   until  the  Class
          Certificate Principal Amount thereof has been reduced to zero.

     Section 5.04.  Advances by Master Servicer and Trustee.  (a) Advances shall
be  made in  respect  of  each  Deposit  Date as  provided  herein.  If,  on any
Determination  Date, the Master Servicer  determines that any Scheduled Payments
due during the related  Collection Period (other than Balloon Payments) have not
been received,  the Master Servicer shall, or cause the applicable  Servicer to,
advance  such  amount,  less an amount,  if any, to be set forth in an Officer's
Certificate to be delivered to the Trustee on such Determination  Date, which if
advanced the Master Servicer or the applicable Servicer has determined would not
be  recoverable  from  amounts  received  with  respect to such  Mortgage  Loan,
including late payments,  Liquidation Proceeds, Insurance Proceeds or otherwise.
If the Master Servicer  determines that an Advance is required,  it shall on the
Deposit Date immediately  following such  Determination Date either (i) remit to
the Trustee from its own funds (or funds  advanced by the  applicable  Servicer)
for deposit in the  Certificate  Account an amount equal to such  Advance,  (ii)
cause to be made an appropriate  entry in the records of the Collection  Account
that funds in such account being held for future distribution or withdrawal have
been,  as permitted by this Section  5.04,  used by the Master  Servicer to make
such Advance, and remit such funds to the Trustee for deposit in the Certificate
Account or (iii) make Advances in the form of any combination of clauses (i) and
(ii)  aggregating  the  amount  of such  Advance.  Any funds  being  held in the
Collection  Account for future  distribution to  Certificateholders  and so used
shall be replaced by the Master Servicer from its own funds by remittance to the
Trustee for deposit in the  Certificate  Account on or before any future Deposit
Date to the extent that funds in the  Certificate  Account on such  Deposit Date
shall be less than  payments  to  Certificateholders  required to be made on the
related  Distribution  Date.  The Master  Servicer  and each  Servicer  shall be
entitled to be reimbursed  from the Collection  Account for all Advances made by
it as provided in Section 4.02.

     (b) In the event that the Master  Servicer  fails for any reason to make an
Advance  required to be made  pursuant to Section  5.04 on or before the Deposit
Date, the Trustee shall, on or before the related  Distribution Date, deposit in
the Certificate  Account an amount equal to the excess of (a) Advances  required
to be made by the Master Servicer or any Servicer that would have been deposited
in such  Certificate  Account  over (b) the  amount of any  Advance  made by the
Master  Servicer  or any  Servicer  with  respect  to  such  Distribution  Date;
provided,  however, that the Trustee shall be required to make such Advance only
if it is not  prohibited  by law from doing so and it has  determined  that such
Advance  would be  recoverable  from amounts to be received with respect to such
Mortgage  Loan,  including  late  payments,   Liquidation  Proceeds,   Insurance
Proceeds, or otherwise.  The Trustee shall be entitled to be reimbursed from the
Certificate  Account for Advances made by it pursuant to this Section 5.04 as if
it were the Master Servicer.

     Section 5.05.  Compensating Interest Payments.  The amount of the Aggregate
Master Servicing  Compensation  payable to the Master Servicer in respect of any
Distribution  Date shall be reduced by the amount of any  Compensating  Interest
Payment for such  Distribution  Date,  but only to the extent such  Compensating
Interest Payment is not actually made by a Servicer on the applicable Remittance
Date.  Such  amount  shall  not  be  treated  as an  Advance  and  shall  not be
reimbursable to the Master Servicer.

     Section 5.06. REMIC 1, REMIC 2, REMIC 3 and REMIC 4 Allocations

     (a) The initial principal  balances of the Class T1-1, Class T1-2 and Class
T1-3  Interests  shall equal 98%, 1% and 1%,  respectively,  of the Cut-off Date
Aggregate Loan Balance.  On each  Distribution  Date, 98% of all collections and
other recoveries  allocable to principal of the Mortgage Loans will be allocated
to the Class T1-1  Interest.  Remaining  amounts  allocable  to principal of the
Mortgage Loans on such  Distribution  Date will be allocated  first to the Class
T1-3  Interest  up to an amount  equal to 2% of any amount  that  represents  an
Adjusted  Overcollateralization Release Amount with respect to such Distribution
Date and then  equally  to the Class  T1-2 and Class  T1-3  Interests.  Interest
accruing on the Class T1-3 Interest in respect of each  Distribution  Date in an
amount equal to 1% of the increase in the Adjusted  Overcollateralization Amount
from the immediately  preceding  Distribution Date will be deferred and added to
the principal balance of the Class T1-3 Interest. The amount of interest accrued
and  deferred  on the Class  T1-3  Interest  in  accordance  with the  preceding
sentence in respect of each  Distribution Date shall be distributed as principal
on such date to the Class T1-2 Interest.

     (b) On each Distribution  Date, the Applied Loss Amount for such date shall
be allocated  98% to the Class T1-1  Interest.  The remaining 2% of such Applied
Loss Amount shall be allocated to the Class T1-3 Interest to the extent that the
principal  balance of the Class T1-3 Interest  exceeds 1% of the Aggregate  Loan
Balance  and then  equally  between the Class T1-2  Interest  and the Class T1-3
Interest. 

     (c) On each Distribution Date, Net Prepayment  Interest Shortfalls shall be
allocated  ratably among the Class T1-1,  Class T1-2 and Class T1-3 Interests in
proportion to their rights to receive  interest on such  Distribution  Date, and
prepayment  premiums and penalties shall be allocated to the Class T1-3 Interest
and treated as additional interest  distributable with respect to the Class T1-3
Interest on such Distribution  Date. 

     (d) The initial principal  balances of the Class T2-1 Interest,  Class T2-2
Interest and Class T2-3 Interest  shall equal 98%, 1% and 1%,  respectively,  of
the  Cut-off  Date  Aggregate  Loan  Balance.  The Class  T2-4  shall not have a
principal  balance.  On  each  Distribution  Date,  all  collections  and  other
recoveries allocable to principal of the Mortgage Loans will be allocated 98% to
the Class  T1-1  Interest.  Remaining  amounts  allocable  to  principal  of the
Mortgage Loans on such  Distribution  Date will be allocated  first to the Class
T2-3  Interest  up to an amount  equal to 2% of any amount  that  represents  an
Adjusted  Overcollateralization  Release Amount for such  Distribution  Date and
then equally to the Class T2-2 and Class T2-3  Interests.  Interest  accruing on
the Class T2-3 Interest in respect of such  Distribution Date in an amount equal
to 1% of the  increase  in the  Adjusted  Overcollateralization  Amount from the
immediately  preceding  Distribution  Date  will be  deferred  and  added to the
principal balance of the Class T2-3 Interest. The amount of interest accrued and
deferred on the Class T2-3 Interest in accordance with the preceding sentence in
respect of each Distribution Date shall be distributed as principal to the Class
T2-2 Interest.

     (e) On each Distribution  Date, the Applied Loss Amount for such date shall
be allocated  98% to the Class T2-1  Interest.  The remaining 2% of such Applied
Loss Amount shall be allocated to the Class T2-3 Interest to the extent that the
principal  balance of the Class T2-3 Interest  exceeds 1% of the Aggregate  Loan
Balance  and then  equally  between the Class T2-2  Interest  and the Class T2-3
Interest. 

     (f) On each Distribution Date, Net Prepayment  Interest Shortfalls shall be
allocated  ratably among the Class T2-1, Class T2-2 and the Class T2-3 Interests
in proportion to their rights to receive interest on such Distribution Date, and
prepayment  premiums and penalties shall be allocated to the Class T2-3 Interest
and treated as additional interest  distributable with respect to the Class T2-3
Interest on such  Distribution  Date. 

     (g) On each  Distribution  Date,  the Class T3-4,  Class T3-5,  Class T3-6,
Class T3-7,  and Class T3-8  Interests  shall be  entitled to receive  principal
distributions  that  correspond to the Principal  Distribution  Amount paid with
respect to the  corresponding  class of  Interests  in REMIC 4 (the Class  T4-1,
Class T4-2, Class T4-3, Class T4-4, and Class T4-5 Interests, respectively). 

     (h) On each  Distribution  Date,  interest that accrues with respect to the
Class  T3-1,  Class T3-2 and Class T3-3  Interests  during the  related  Accrual
Period shall be  distributed as principal on the Class T3-4.  Class T3-5,  Class
T3-6,  Class T3-7,  and Class T3-8 Interests to the extent needed to achieve the
Targeted  Overcollateralization  Amount for such Distribution  Date, and, to the
extent not needed for this  purpose,  shall be  distributed  with respect to the
Class  T3-1.  Class  T3-2,  and Class  T3-3  Interests  in  proportion  to their
entitlements  to current  and  accrued  undistributed  interest.  Interest  that
accrues on the Class T3-1, Class T3-2, and Class T3-3 Interests shall not itself
bear  interest.

     (i) On each  Distribution  Date,  the Applied  Loss Amount with  respect to
REMIC 3 and any Distribution Date shall be allocated as follows:

                  first,  to the Class T3-4  Interest,  to the  extent  that its
                  principal  balance exceeds the principal  balance of the Class
                  T4-1  Interest  as of such  Distribution  Date  (after  giving
                  effect to any distributions made on such date);

                  second,  to the Class T3-5  Interest,  to the extent  that its
                  principal  balance exceeds the principal  balance of the Class
                  T4-2  Interest  as of such  Distribution  Date  (after  giving
                  effect to any distributions made on such date);

                  third,  to the Class T3-6  Interest,  to the  extent  that its
                  principal  balance exceeds the principal  balance of the Class
                  T4-3  Interest  as of such  Distribution  Date  (after  giving
                  effect to any distributions made on such date);

                  fourth,  to the Class T3-7  Interest,  to the extent  that its
                  principal  balance exceeds the principal  balance of the Class
                  T4-4  Interest  as of such  Distribution  Date  (after  giving
                  effect to any distributions made on such date);

                  fifth,  to the Class T3-8  Interest,  to the  extent  that its
                  principal  balance exceeds the principal  balance of the Class
                  T4-5  Interest  as of such  Distribution  Date  (after  giving
                  effect to any distributions made on such date);

                  sixth, proportionately,  to the accrued interest balances of
                  the Class T3-1, Class T3-2, and Class T3-3 Interests; and

                  seventh,  in a manner  that will  cause any amount due on each
                  REMIC 3  Regular  Interest  to  equal  the  amount  due on the
                  corresponding Class of Regular interests in REMIC 4.

          (i) On each  Distribution  Date,  Net Prepayment  Interest  Shortfalls
shall be  allocated  ratably  among the REMIC 3 Regular  Interests  according to
their  right to receive  interest  on such  Distribution  Date,  and  prepayment
premiums and penalties  shall be allocated  ratably among the Class T3-1,  Class
T3-2 and Class T3-4  Interests in proportion  to the interest  accruing on those
Interests and shall be treated as additional interest distributable with respect
to those Interests on such Distribution Date.

          (j) On each Distribution  Date, the Class T4-1, Class T4-2, Class T4-3
and  Class  T4-4,  and  Class  T4-5  Interests  shall  be  entitled  to  receive
distributions  of  principal  and interest  equal to the interest and  principal
distributions  required to be paid with  respect to the  corresponding  Class of
Certificates  (determined  as if  the  distributions  on the  Certificates  were
computed without regard to amounts  distributed under Section  5.02(d)(i) hereof
from the Basis Risk Reserve  Fund).  On each  Distribution  Date,  interest that
accrues  with respect to the Class T4-5,  Class T4-6,  T4-7,  Class T4-8,  Class
T4-9,  and Class T4-10  Interests  during the related  Accrual  Period  shall be
distributed as principal on the Class T4-1,  Class T4-2, Class T4-3, Class T4-4,
and Class  T4-5  Interests  to the extent  needed to fund the  Excess  Principal
Distribution Amount for the corresponding  Classes of Certificates,  and, to the
extent not needed for this  purpose,  shall be  distributed  with respect to the
Class T4-5,  Class T4-6,  Class T4-7,  Class T4-8,  Class T4-9,  and Class T4-10
Interests  in   proportion   to  their   entitlement   to  current  and  accrued
undistributed  interest.  Interest  that accrues on the Class T4-5,  Class T4-6,
Class T4-7,  Class T4-8,  Class T4-9, and Class T4-10 Interests shall not itself
bear  interest.

          (k) On each Distribution Date, the Applied Loss Amount with respect to
REMIC 4 and any  Distribution  Date shall be allocated among the REMIC 4 Regular
Interests in accordance with the allocations provided in Section 5.03 hereof for
the corresponding  Classes of Certificates.

          (l) On each  Distribution  Date,  Net Prepayment  Interest  Shortfalls
shall be allocated  ratably among the Class T4-5,  Class T4-6, Class T4-7, Class
T4-8,  Class T4-9,  and Class T4-10  Interests  in  proportion  to the  interest
accruing  on  those  Interests  with  resect  to  such  Distribution  Date,  and
prepayment  premiums and  penalties  shall be allocated  ratably among the Class
T4-5,  Class T4-6, Class T4-7, Class T4-8, Class T4-9, and Class T4-10 Interests
in proportion to the interest  accruing on those  interests and shall be treated
as additional  interest  distributable  with respect to those  Interests on such
Distribution  Date.  

     Section 5.07.  Directing  Holder  Servicing  Fee.  REMIC 4 shall pay to the
Directing  Holder the Director  Holding  Servicing Fee as an additional  fee for
services rendered as Special Servicer.  Such fee shall be due and payable on any
Distribution  Date only to the extent that there are amounts remaining after all
amounts required to be distributed with respect to the REMIC 4 Regular Interests
have been made for that  Distribution  Date.  With respect to each  Distribution
Date, the Directing Holder Servicing Fee shall equal the sum of the following:

          (i) an  amount  equal to the  product  of the  Class  A-1  Certificate
          Interest Rate for such  Distribution  Date and the excess of the Class
          T3-4 Interest principal balance over the Class T4-1 Interest principal
          balance  (before  giving effect to any  reductions of such balances on
          such Distribution Date);

          (i) an  amount  equal to the  product  of the  Class  A-2  Certificate
Interest  Rate for such  Distribution  Date and the  excess  of the  Class  T3-5
Interest  principal  balance  over the Class  T4-2  Interest  principal  balance
(before  giving effect to any  reductions of such balances on such  Distribution
Date);

          (ii) an amount  equal to the  product  of the  Class  M-1  Certificate
Interest  Rate for such  Distribution  Date and the  excess  of the  Class  T3-6
Interest  principal  balance  over the Class  T4-3  Interest  principal  balance
(before  giving effect to any  reductions of such balances on such  Distribution
Date);  and (iii) an amount  equal to the  product of the Class M-2  Certificate
Interest  Rate for such  Distribution  Date and the  excess  of the  Class  T3-7
Interest  principal  balance  over the Class  T4-4  Interest  principal  balance
(before  giving effect to any  reductions of such balances on such  Distribution
Date).  Section 5. (a) On the Closing  Date,  the Trustee  shall  establish  and
maintain in its name,  in trust for the benefit of the holders of the Class A-1,
Class A-2, Class M-1, Class M-2 and Class B Certificates, the Basis Risk Reserve
Fund, into which the Depositor shall deposit $1,000. The Basis Risk Reserve Fund
shall be an  Eligible  Account,  and  funds  on  deposit  therein  shall be held
separate and apart from,  and shall not be  commingled  with,  any other moneys,
including, without limitation, other moneys of the Trustee held pursuant to this
Agreement.

     (b) On each  Distribution  Date on which the Net Excess Spread is less than
0.25%,  the Trustee  shall  transfer the Required  Reserve Fund Deposit from the
Certificate  Account  to  the  Basis  Risk  Reserve  Fund  pursuant  to  Section
5.02(d)(x).  The Trustee shall make withdrawals from the Basis Risk Reserve Fund
to make distributions pursuant to Section 5.02(d)(i).

     (c) Funds in the Basis  Risk  Reserve  Fund may be  invested  in  Permitted
Investments.  Any earnings on such amounts shall be  distributed  to the Class X
Certificate  pursuant  to Section  5.02(d)(xi).  The Class X  Certificate  shall
evidence  ownership  of the Basis  Risk  Reserve  Fund for  federal  income  tax
purposes and the Holder  thereof  shall direct the  Trustee,  in writing,  as to
investment  of amounts on deposit  therein.  

     (d) Upon termination of the Trust Fund, any amounts  remaining in the Basis
Risk Reserve Fund shall be distributed to the Class X Certificateholder pursuant
to Section 5.02(d)(xi).

                                   ARTICLE VI.

                    CONCERNING THE TRUSTEE; EVENTS OF DEFAULT

     Section  6.01.  Duties of  Trustee.  (a) The  Trustee,  except  during  the
continuance  of an Event of Default,  undertakes to perform such duties and only
such duties as are  specifically  set forth in this  Agreement.  Any  permissive
right of the Trustee  provided for in this Agreement shall not be construed as a
duty of the Trustee.  If an Event of Default has occurred and has not  otherwise
been cured or waived,  the Trustee shall  exercise such of the rights and powers
vested  in it by this  Agreement  and use the same  degree  of care and skill in
their exercise as a prudent Person would exercise or use under the circumstances
in the  conduct of such  Person's  own  affairs  unless the Trustee is acting as
Master Servicer, in which case it shall use the same degree of care and skill as
the Master Servicer hereunder.

     (b) The Trustee, upon receipt of all resolutions, certificates, statements,
opinions,  reports,  documents,  orders or other  instruments  furnished  to the
Trustee  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 shall
not  be  responsible  for  the  accuracy  or  content  of any  such  resolution,
certificate,  statement,  opinion,  report,  document, order or other instrument
furnished by the Master Servicer, to the Trustee pursuant to this Agreement.

     (c)  The  Trustee  shall  not  have  any  liability  arising  out  of or in
connection with this Agreement, except for its negligence or willful misconduct.
No  provision of this  Agreement  shall be construed to relieve the Trustee from
liability for its own negligent action,  its own negligent failure to act or its
own willful misconduct; provided, however, that:

                  (i)  The  Trustee  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 as provided in Section 6.19 hereof;

          (i) For all purposes  under this  Agreement,  the Trustee shall not be
deemed to have  notice of any Event of  Default  (other  than  resulting  from a
failure by the Master  Servicer (i) to remit funds (or to make Advances) or (ii)
to  furnish  information  to  the  Trustee  when  required  to do so)  unless  a
Responsible  Officer  of the  Trustee  has  actual  knowledge  thereof or unless
written  notice of any event  which is in fact such a default is received by the
Trustee at the Corporate Trust Office, and such notice references the Holders of
the Certificates and this Agreement;

          (ii) No  provision  of this  Agreement  shall  require  the Trustee to
expend or risk its own funds or otherwise  incur any financial  liability in the
performance  of any of its duties  hereunder,  or in the  exercise of any of its
rights or  powers,  if it shall  have  reasonable  grounds  for  believing  that
repayment of such funds or adequate  indemnity against such risk or liability is
not reasonably assured to it; and 

          (iii) The Trustee shall not be responsible  for any act or omission of
the Master  Servicer.

     (d) The Trustee shall have no duty hereunder with respect to any complaint,
claim,  demand,  notice or other document it may receive or which may be alleged
to have been  delivered to or served upon it by the parties as a consequence  of
the  assignment  of any Mortgage Loan  hereunder;  provided,  however,  that the
Trustee shall use its best efforts to remit to the Master  Servicer upon receipt
any such  complaint,  claim,  demand,  notice  or other  document  (i)  which is
delivered  to the  Corporate  Trust  Office  of the  Trustee,  (ii)  of  which a
Responsible Officer has actual knowledge,  and (iii) which contains  information
sufficient to permit the Trustee to make a determination  that the real property
to which such document relates is a Mortgaged Property.

     (e) The Trustee 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  Certificateholders  of any Class holding  Certificates  which
evidence,  as to such Class,  Percentage Interests aggregating not less than 25%
as to 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.

     (f) The Trustee  shall pay, out of its own funds,  any fees assessed by the
Rating  Agencies  after the Closing  Date in  connection  with  maintaining  the
ratings of the Certificates.  Section 6. Except as otherwise provided in Section
6.01:

                    (i) The  Trustee  may  request,  and may rely  and  shall be
                    protected  in  acting or  refraining  from  acting  upon any
                    resolution,  Officer's Certificate,  certificate of auditors
                    or any other certificate,  statement,  instrument,  opinion,
                    report, notice,  request,  consent, order, approval, 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;

          (i) The Trustee may consult with counsel and any advice of its counsel
or 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 advice or Opinion of Counsel;

          (ii) The Trustee shall not be personally  liable for any action taken,
suffered  or  omitted by it in good faith and  reasonably  believed  by it to be
authorized  or within the  discretion or rights or powers  conferred  upon it by
this  Agreement;  (iii)  Unless an Event of Default  shall have  occurred and be
continuing,  the Trustee shall not be bound to make any  investigation  into the
facts or matters stated in any resolution,  certificate,  statement, instrument,
opinion, report, notice, request,  consent, order, approval, bond or other paper
or document (provided the same appears regular on its face), unless requested in
writing  to do so by  Holders  of at  least  a  majority  in  Class  Certificate
Principal  Amount  (or  Percentage  Interest)  of each  Class  of  Certificates;
provided,  however, that, if the payment within a reasonable time to the Trustee
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,  not reasonably assured
to the Trustee by the  security  afforded to it by the terms of this  Agreement,
the Trustee may require  reasonable  indemnity against such expense or liability
or  payment  of such  estimated  expenses  as a  condition  to  proceeding.  The
reasonable  expense  thereof  shall  be  paid  by the  Holders  requesting  such
investigation;  and (v)  ______ The  Trustee  may  execute  any of the trusts or
powers  hereunder  or perform  any duties  hereunder  either  directly  or by or
through agents or attorneys,  which agents or attorneys shall have any or all of
the rights,  powers,  duties and obligations of the Trustee conferred on them by
such appointment  provided that the Trustee shall continue to be responsible for
its duties and obligations hereunder.

     Section  6.03.  Trustee Not Liable for  Certificates.  The Trustee makes no
representations  as to the validity or  sufficiency  of this Agreement or of the
Certificates  (other than the certificate of authentication on the Certificates)
or of any Mortgage  Loan, or related  document save that the Trustee  represents
that,  assuming due  execution and delivery by the other  parties  hereto,  this
Agreement has been duly authorized, executed and delivered by it and constitutes
its valid and binding obligation,  enforceable against it in accordance with its
terms  except  that  such  enforceability  may  be  subject  to  (A)  applicable
bankruptcy and insolvency  laws and other similar laws affecting the enforcement
of the rights of  creditors  generally,  and (B)  general  principles  of equity
regardless of whether such  enforcement  is considered in a proceeding in equity
or at law. The Trustee shall not be  accountable  for the use or  application by
the Depositor of funds paid to the Depositor in  consideration of the assignment
of the  Mortgage  Loans to the  Trust  Fund by the  Depositor  or for the use or
application of any funds deposited into the Collection Account,  the Certificate
Account, any Escrow Account or any other fund or account maintained with respect
to the Certificates.

     Section 6.04.  Trustee May Own Certificates.  The Trustee and any Affiliate
or agent of the Trustee in its  individual or any other  capacity may become the
owner or pledgee of  Certificates  and may  transact  banking and trust with the
other  parties  hereto with the same rights it would have if it were not Trustee
or such agent.

     Section 6.05. Eligibility Requirements for Trustee. The Trustee hereunder
shall  at all  times  be (i) an  institution  insured  by the  FDIC and (ii) a
corporation  or national  banking  association,  organized and doing  business
under the laws of any State or the United States of America,  authorized under
such laws to exercise  corporate trust powers,  having a combined  capital and
surplus of not less than $50,000,000 and subject to supervision or examination
by  federal  or state  authority.  If such  corporation  or  national  banking
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 national  banking  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  shall cease to be
eligible in accordance  with  provisions  of this  Section,  the Trustee shall
resign  immediately  in the manner and with the  effect  specified  in Section
6.06.

     Section 6.06.  Resignation  and Removal of Trustee.  (a) The Trustee may at
any time  resign  and be  discharged  from the trust  hereby  created  by giving
written notice thereof to the Depositor and the Master Servicer.  Upon receiving
such notice of  resignation,  the Depositor  will  promptly  appoint a successor
trustee by written  instrument,  one copy of which instrument shall be delivered
to the resigning Trustee,  one copy to the successor trustee and one copy to the
Master Servicer.  If no successor trustee shall have been so appointed and shall
have  accepted  appointment  within 30 days after the  giving of such  notice of
resignation,   the  resigning  Trustee  may  petition  any  court  of  competent
jurisdiction for the appointment of a successor trustee.

     (b) If at any time (i) the Trustee shall cease to be eligible in accordance
with the  provisions  of  Section  6.05 and shall fail to resign  after  written
request  therefor by the Depositor,  (ii) the Trustee shall become  incapable of
acting,  or shall be  adjudged a bankrupt  or  insolvent,  or a receiver  of the
Trustee or of its property shall be appointed,  or any public officer shall take
charge or control of the  Trustee or of its  property or affairs for the purpose
of  rehabilitation,  conservation  or  liquidation,  (iii) a tax is  imposed  or
threatened  with  respect to the Trust Fund by any state in which the Trustee or
the Trust Fund held by the Trustee is located,  or (iv) the continued use of the
Trustee  would result in a downgrading  of the rating by the Rating  Agencies of
any Class of  Certificates  with a rating,  then the Depositor  shall remove the
Trustee and appoint a successor trustee by written instrument, one copy of which
instrument  shall  be  delivered  to the  Trustee  so  removed,  one copy to the
successor trustee and one copy to the Master Servicer.

     (c) The Holders of more than 50% of the Class Certificate  Principal Amount
(or Percentage  Interest) of each Class of Certificates  may at any time upon 30
days' written  notice to the Trustee and to the Depositor  remove the Trustee by
such written instrument,  signed by such Holders or their  attorney-in-fact duly
authorized,  one copy of which  instrument  shall be delivered to the Depositor,
one copy to the  Trustee so removed  and one copy to the  Master  Servicer;  the
Depositor shall thereupon use its best efforts to appoint a mutually  acceptable
successor  trustee in  accordance  with this  Section.  

     (d)  Any  resignation  or  removal  of the  Trustee  and  appointment  of a
successor trustee pursuant to any of the provisions of this Section shall become
effective upon acceptance of appointment by the successor trustee as provided in
Section  6.07.

     Section 6.07.  Successor  Trustee.  (a) Any successor  trustee appointed as
provided  in  Section  6.06  shall  execute,  acknowledge  and  deliver  to  the
Depositor,  the Master  Servicer and to its  predecessor  trustee an  instrument
accepting such appointment  hereunder,  and thereupon the resignation or removal
of the predecessor  trustee shall become  effective and such successor  trustee,
without any further act, deed or conveyance,  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 herein.  The predecessor  trustee
shall  deliver to the  successor  trustee all Mortgage  Files and  documents and
statements  related to each Mortgage Files held by it hereunder,  and shall duly
assign, transfer, deliver and pay over to the successor trustee the entire Trust
Fund,  together with all  necessary  instruments  of transfer and  assignment or
other documents  properly executed necessary to effect such transfer and such of
the  record or copies  thereof  maintained  by the  predecessor  trustee  in the
administration  hereof as may be  requested by the  successor  trustee and shall
thereupon  be  discharged  from  all  duties  and  responsibilities  under  this
Agreement.  In addition,  the Master Servicer and the predecessor  trustee shall
execute  and  deliver  such other  instruments  and do such other  things as may
reasonably  be  required  to more fully and  certainly  vest and  confirm in the
successor trustee all such rights, powers, duties and obligations.

     (b) No  successor  trustee  shall  accept  appointment  as provided in this
Section unless at the time of such appointment  such successor  trustee shall be
eligible under the provisions of Section 6.05.

     (c) Upon  acceptance of appointment  by a successor  trustee as provided in
this Section,  the Master  Servicer  shall mail notice of the succession of such
trustee  hereunder to all Holders of Certificates at their addresses as shown in
the  Certificate  Register  and to the Rating  Agencies.  The  expenses  of such
mailing shall be borne by the Master Servicer.  Section 6. Any Person into which
the  Trustee may be merged or with which it may be  consolidated,  or any Person
resulting  from any merger,  conversion  or  consolidation  to which the Trustee
shall be a party,  or any Persons  succeeding  to the  business of the  Trustee,
shall be the successor to the Trustee 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 that such Person shall
be eligible under the provisions of Section 6.05.

     Section 6.08. Merger or Consolidation of Trustee.  (a)  Notwithstanding any
other  provisions  hereof,  at any  time,  the  Trustee,  the  Depositor  or the
Certificateholders  evidencing more than 50% of the Class Certificate  Principal
Amount (or Percentage  Interest) of each Class of  Certificates  shall each have
the power  from time to time to  appoint  one or more  Persons  to act either as
co-trustees jointly with the Trustee, or as separate trustees, or as custodians,
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 has been 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 property securing a Mortgage Loan is located or for
the purpose of otherwise  conforming to any legal  requirement,  restriction  or
condition in any state in which a property  securing a Mortgage  Loan is located
or in any state in which any portion of the Trust Fund is located.  The separate
Trustees,   co-trustees,  or  custodians  so  appointed  shall  be  trustees  or
custodians  for the  benefit of all 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 obligation of
the Trustee to make Advances  pursuant to Section 5.04 and 6.14 hereof shall not
be affected or assigned by the appointment of a co-trustee.

     (b) Every separate trustee,  co-trustee, and custodian 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;

          (i) 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,  co-trustee,  or custodian
jointly,  except to the extent that under any law of any  jurisdiction  in which
any  particular act or acts are to be performed 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 Fund or any
portion  thereof in any such  jurisdiction,  shall be exercised and performed by
such separate trustee, co-trustee, or custodian;

          (ii) no trustee or custodian  hereunder shall be personally  liable by
reason of any act or omission of any other trustee or custodian  hereunder;  and
(iii) the  Trustee  or the  Certificateholders  evidencing  more than 50% of the
Aggregate  Voting  Interests  of the  Certificates  may at any time  accept  the
resignation  of or remove any separate  trustee,  co-trustee  or  custodian,  so
appointed  by it or them,  if such  resignation  or removal does not violate the
other terms of this Agreement.

     (c) 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 VI. 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 filed with the Trustee.

     (d) 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,  co-trustee or custodian 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.  

     (e) No  separate  trustee,  co-trustee  or  custodian  hereunder  shall  be
required to meet the terms of eligibility  as a successor  trustee under Section
6.05 hereunder and no notice to  Certificateholders  of the appointment shall be
required  under  Section  6.07  hereof.

     (f) The Trustee agrees to instruct the  co-trustees,  if any, to the extent
necessary to fulfill the Trustee's obligations hereunder. 

     (g) The Trustee shall pay the reasonable compensation of the co-trustees to
the extent,  and in  accordance  with the  standards,  specified in Section 6.12
hereof  (which  compensation  shall not reduce any  compensation  payable to the
Trustee under such Section).

     Section  6.10.  Authenticating  Agents.  (a) The Trustee may appoint one or
more  Authenticating  Agents which shall be  authorized  to act on behalf of the
Trustee  in  authenticating  Certificates.  Wherever  reference  is made in this
Agreement to the  authentication of Certificates by the Trustee or the Trustee's
certificate  of  authentication,  such  reference  shall be  deemed  to  include
authentication  on  behalf  of the  Trustee  by an  Authenticating  Agent  and a
certificate  of  authentication   executed  on  behalf  of  the  Trustee  by  an
Authenticating  Agent. Each Authenticating Agent must be a corporation organized
and doing  business  under the laws of the  United  States of  America or of any
state, 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.

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

     (c) Any  Authenticating  Agent may at any time resign by giving at least 30
days' advance  written  notice of  resignation to the Trustee and the Depositor.
The Trustee may at any time terminate the agency of any Authenticating  Agent by
giving  written  notice  of  termination  to such  Authenticating  Agent and the
Depositor. Upon receiving a notice of resignation or upon such a termination, or
in case at any time any  Authenticating  Agent  shall  cease to be  eligible  in
accordance  with the  provisions of this Section 6.10, the Trustee may appoint a
successor Authenticating Agent, shall give written notice of such appointment to
the  Depositor  and shall  mail  notice of such  appointment  to all  Holders of
Certificates.   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. No successor  Authenticating  Agent
shall be appointed unless eligible under the provisions of this Section 6.10. No
Authenticating Agent shall have responsibility or liability for any action taken
by it as such at the direction of the Trustee. Any Authenticating Agent shall be
entitled  to  reasonable  compensation  for  its  services  and,  if paid by the
Trustee, it shall be a reimbursable expense pursuant to Section 6.12.

     Section 6.11.  Indemnification  of Trustee.  The Trustee and its directors,
officers,  employees  and agents shall be entitled to  indemnification  from the
Trust Fund for any loss,  liability or expense  incurred in connection  with any
legal proceeding and incurred without  negligence or willful misconduct on their
part, arising out of, or in connection with, the acceptance or administration of
the trusts  created  hereunder,  including  the costs and  expenses of defending
themselves  against any claim in connection  with the exercise or performance of
any of their powers or duties hereunder, provided that:

                    (i) with respect to any such claim,  the Trustee  shall have
                    given the  Depositor,  the Master  Servicer  and the Holders
                    written notice thereof promptly after the Trustee shall have
                    knowledge thereof;

          (i) while maintaining control over its own defense,  the Trustee shall
cooperate and consult fully with the Depositor in preparing such defense; and

          (ii)  notwithstanding  anything to the contrary in this Section  6.11,
the Trust  Fund  shall not be liable  for  settlement  of any such  claim by the
Trustee  entered into without the prior consent of the Depositor,  which consent
shall not be  unreasonably  withheld.  

     The  provisions of this Section 6.11 shall survive any  termination of this
Agreement and the  resignation  or removal of the Trustee and shall be construed
to  include,  but not be limited  to any loss,  liability  or expense  under any
environmental law.

     Section 6.12.  Fees and Expenses of Trustee.  The Trustee shall be entitled
to  receive,  and is  authorized  to pay to itself  the amount of income or gain
earned from the investment of funds in the Certificate Account.

     Section 6.13.  Collection of Monies. Except as otherwise expressly provided
in this  Agreement,  the  Trustee may demand  payment or delivery  of, and shall
receive and collect,  all money and other  property  payable to or receivable by
the Trustee  pursuant to this  Agreement.  The Trustee shall hold all such money
and property received by it as part of the Trust Fund and shall distribute it as
provided  in this  Agreement.  If the  Trustee  shall not have  timely  received
amounts  to be  remitted  with  respect  to the  Mortgage  Loans from the Master
Servicer,   the  Trustee  shall  request  the  Master   Servicer  to  make  such
distribution  as promptly as  practicable or legally  permitted.  If the Trustee
shall subsequently receive any such amount, it may withdraw such request.

     Section 6.14. Trustee To Act; Appointment by Successor.  (a) The occurrence
of any one or  more of the  following  events  shall  constitute  an  "Event  of
Default"):

                    (i) Any  failure  by the  Master  Servicer  to  furnish  the
                    Trustee the  Mortgage  Loan data  sufficient  to prepare the
                    reports   described  in  Section   4.03(a)  which  continues
                    unremedied  for a period of one  Business Day after the date
                    upon which  written  notice of such failure  shall have been
                    given to such  Master  Servicer  by the  Trustee  or to such
                    Master  Servicer  and the Trustee by the Holders of not less
                    than  25% of the  Class  Certificate  Principal  Amount  (or
                    Percentage Interest) of each Class of Certificates  affected
                    thereby; or

          (i) 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 such  Master  Servicer  contained  in this  Agreement  which  continues
unremedied  for a period  of 30 days (or 15 days,  in the case of a  failure  to
maintain  any  Insurance  Policy  required  to be  maintained  pursuant  to this
Agreement) after the date on which written notice of such failure, requiring the
same to be  remedied,  shall  have been  given to such  Master  Servicer  by the
Trustee,  or to such Master  Servicer and the Trustee by the Holders of not less
than 25% of the Class Certificate  Principal Amount (or Percentage  Interest) of
each Class of Certificates affected thereby; or

          (ii) A decree or order of a court or agency or  supervisory  authority
having  jurisdiction  for  the  appointment  of a  conservator  or  receiver  or
liquidator in any insolvency,  readjustment  of debt,  marshalling 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  or unstayed for a period of 60
days or any  Rating  Agency  reduces  or  withdraws  or  threatens  to reduce or
withdraw the rating of the  Certificates  because of the financial  condition or
loan servicing capability of such Master Servicer;  or 

          (iii) The  Master  Servicer  shall  consent  to the  appointment  of a
conservator or receiver or liquidator in any  insolvency,  readjustment of debt,
marshalling  of  assets  and  liabilities,   voluntary  liquidation  or  similar
proceedings  of or relating to such 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 or
                    reorganization  statute,  make an assignment for the benefit
                    of its  creditors  or  voluntarily  suspend  payment  of its
                    obligations; or

          (iv) 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 9.27 hereof; or

          (v) If a  representation  or warranty set forth in Section 9.14 hereof
shall prove to be incorrect  as of the time made in any respect that  materially
and  adversely  affects  the  interests  of  the  Certificateholders,   and  the
circumstance  or condition in respect of which such  representation  or warranty
was incorrect  shall not have been  eliminated or cured within 60 days after the
date on which written notice of such incorrect  representation or warranty shall
have been given to the Master Servicer by the Trustee, or to the Master Servicer
and the Trustee by the Holders of not less than 25% of the Aggregate Certificate
Principal Amount of each Class of Certificates;  or 

          (vi) A sale or pledge of the any of the rights of the Master  Servicer
hereunder  or an  assignment  of this  Agreement  by the  Master  Servicer  or a
delegation of the rights or duties of the Master  Servicer  hereunder shall have
occurred in any manner not otherwise  permitted  hereunder and without the prior
written consent of the Trustee and  Certificateholders  holding more than 50% of
the Class Certificate Principal Amount (or Percentage Interest) of each Class of
Certificates; or 

          (vii)  Any  Servicer  at any time is not  either  an  FNMA- or  FHLMC-
approved  servicer,  and the Master  Servicer has not  terminated the rights and
obligations  of such  Servicer  under the  applicable  Servicing  Agreement  and
replaced such Servicer with an FNMA- or  FHLMC-approved  servicer within 45 days
of the absence of such  approval;  or 

          (x) Any  failure of the Master  Servicer  to remit to the  Trustee any
payment required to be made to the Trustee for the benefit of Certificateholders
under the terms of this Agreement, including any Advance, on any Deposit Date.

     If an Event of  Default  described  in  clauses  (i)  through  (ix) of this
Section 6.14 shall occur,  then,  in each and every case,  subject to applicable
law, so long as any such Event of Default  shall not have been  remedied  within
any period of time  prescribed by this Section 6.14,  the Trustee,  by notice in
writing  to  the  Master   Servicer   may,   and  shall,   if  so   directed  by
Certificateholders  evidencing more than 50% of the Class Certificate  Principal
Amount (or Percentage Interest) of each Class of Certificates  affected thereby,
terminate all of the rights and obligations of the Master Servicer hereunder and
in and to the Mortgage  Loans and the proceeds  thereof.  If an Event of Default
described  in clause (x) of this Section  6.14 shall  occur,  then,  in each and
every case, subject to applicable law, the Trustee,  by notice in writing to the
Master Servicer,  shall promptly  terminate all of the rights and obligations of
the Master Servicer  hereunder and in and to the Mortgage Loans and the proceeds
thereof.  On or after the receipt by the Master Servicer of such written notice,
all  authority  and power of the Master  Servicer,  and only in its  capacity as
Master Servicer under this Agreement, whether with respect to the Mortgage Loans
or otherwise,  shall pass to and be vested in the Trustee  pursuant to and under
the terms of this Agreement;  and the Trustee is hereby authorized and empowered
to  execute  and  deliver,  on  behalf  of the  defaulting  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 defaulting  Master Servicer agrees to cooperate with the Trustee
in   effecting   the   termination   of   the   defaulting   Master   Servicer's
responsibilities  and rights  hereunder as Master  Servicer  including,  without
limitation,  notifying  Mortgagors  of the  assignment  of the master  servicing
function and  providing the Trustee or its designee all documents and records in
electronic or other form reasonably requested by it to enable the Trustee or its
designee to assume the defaulting Master Servicer's  functions hereunder and the
transfer to the Trustee for  administration  by it of all amounts which shall at
the time be or should have been deposited by the defaulting  Master  Servicer in
the Collection  Account  maintained by such  defaulting  Master Servicer and any
other account or fund maintained with respect to the  Certificates or thereafter
received  with  respect  to  the  Mortgage  Loans.  The  Master  Servicer  being
terminated  shall bear all costs of a master servicing  transfer,  including but
not limited to those of the Trustee  reasonably  allocable to specific employees
and overhead, legal fees and expenses,  accounting and financial consulting fees
and expenses, and costs of amending the Agreement, if necessary.

     Notwithstanding the termination of its activities as Master Servicer,  each
terminated Master Servicer shall continue to be entitled to reimbursement to the
extent provided in Section 4.02(i), (ii), (iii), (iv), (v), (vi), (vii) and (ix)
to the extent  such  reimbursement  relates to the period  prior to such  Master
Servicer's termination.

     If any Event of Default shall occur,  the Trustee shall promptly notify the
Rating  Agencies of the nature and extent of such Event of Default.  The Trustee
shall  immediately  give written notice to the Master  Servicer upon such Master
Servicer's failure to remit funds on the Deposit Date.

     (b) On and  after  the time  the  Master  Servicer  receives  a  notice  of
termination from the Trustee pursuant to Section 6.14(a) or the Trustee receives
the  resignation  of the  Master  Servicer  evidenced  by an  Opinion of Counsel
pursuant to Section 9.29, the Trustee, unless another master servicer shall have
been appointed, shall be the successor in all respects to the Master Servicer in
its  capacity as such under this  Agreement  and the  transactions  set forth or
provided  for  herein and shall have all the rights and powers and be subject to
all the  responsibilities,  duties and liabilities  relating thereto and arising
thereafter placed on the Master Servicer hereunder,  including the obligation to
make  Advances;  provided,  however,  that any failure to perform such duties or
responsibilities  caused by the Master Servicer's failure to provide information
required  by this  Agreement  shall not be  considered  a default by the Trustee
hereunder.  In addition, the Trustee shall have no responsibility for any act or
omission  of the  Master  Servicer  prior  to the  issuance  of  any  notice  of
termination  and shall have no  liability  relating to the  representations  and
warranties  of the Master  Servicer set forth in Section  9.14. In the Trustee's
capacity as such  successor,  the  Trustee  shall have the same  limitations  on
liability herein granted to the Master Servicer. As compensation  therefor,  the
Trustee  shall be  entitled to receive  all  compensation  payable to the Master
Servicer under this Agreement, including the Master Servicing Fee.

     (c) Notwithstanding the above, the Trustee may, if it shall be unwilling to
continue to so act, or shall, if it is unable to so act, appoint,  or petition a
court of competent  jurisdiction to appoint,  any  established  housing and home
finance institution servicer,  master servicer,  servicing or mortgage servicing
institution  having a net worth of not less than  $15,000,000  and meeting  such
other  standards  for a  successor  master  servicer  as are set  forth  in this
Agreement,  as the successor to such Master Servicer in the assumption of all of
the  responsibilities,  duties or  liabilities  of a master  servicer,  like the
Master  Servicer.  Any entity  designated  by the Trustee as a successor  master
servicer may be an Affiliate of the Trustee;  provided,  however,  that,  unless
such Affiliate  meets the net worth  requirements  and other standards set forth
herein for a successor master servicer,  the Trustee, in its individual capacity
shall agree,  at the time of such  designation,  to be and remain  liable to the
Trust Fund for such  Affiliate's  actions and omissions in performing its duties
hereunder.  In connection with such appointment and assumption,  the Trustee may
make such arrangements for the compensation of such successor out of payments on
Mortgage Loans as it and such successor shall agree; provided,  however, that no
such  compensation  shall be in excess of that permitted to the Master  Servicer
hereunder.  The Trustee and such successor  shall take such actions,  consistent
with this Agreement, as shall be necessary to effectuate any such succession and
may make other  arrangements  with  respect  to the  servicing  to be  conducted
hereunder  which  are not  inconsistent  herewith.  The  Master  Servicer  shall
cooperate  with the Trustee and any successor  master  servicer in effecting the
termination  of the Master  Servicer's  responsibilities  and  rights  hereunder
including,  without  limitation,  notifying  Mortgagors of the assignment of the
master  servicing  functions  and  providing  the Trustee and  successor  master
servicer,  as applicable,  all documents and records in electronic or other form
reasonably  requested  by it  to  enable  it to  assume  the  Master  Servicer's
functions  hereunder  and the transfer to the Trustee or such  successor  master
servicer,  as applicable,  all amounts which shall at the time be or should have
been deposited by the Master  Servicer in the  Collection  Account and any other
account or fund  maintained  with respect to the  Certificates  or thereafter be
received with respect to the Mortgage  Loans.  Neither the Trustee 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, (ii) the failure
of the Master  Servicer to  cooperate as required by this  Agreement,  (iii) the
failure of the Master  Servicer to deliver the Mortgage Loan data to the Trustee
as required by this  Agreement or (iv)  restrictions  imposed by any  regulatory
authority having  jurisdiction  over the Master Servicer.  Section 6. 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
6.14,  shall have the right, in its own name and 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
filings  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 6.15.  Additional Remedies of Trustee Upon Event of Default. 35% or
more of the  Aggregate  Voting  Interests  of  Certificateholders  may waive any
default or Event of Default by the Master  Servicer  in the  performance  of its
obligations  hereunder,  except  that a default  in the  making of any  required
deposit to the Certificate Account that would result in a failure of the Trustee
to make any required payment of principal of or interest on the Certificates may
only be waived with the consent of 100% of the affected Certificateholders. Upon
any such waiver of a past default,  such default  shall cease to exist,  and any
Event of Default  arising  therefrom  shall be deemed to have been  remedied for
every purpose of this  Agreement.  No such waiver shall extend to any subsequent
or other  default or impair any right  consequent  thereon  except to the extent
expressly so waived.

     Section 6.16.  Waiver of Defaults.  Upon termination of the Master Servicer
or appointment of a successor to the Master  Servicer,  in each case as provided
herein,  the Trustee shall  promptly mail notice  thereof by first class mail to
the   Certificateholders   at  their  respective   addresses  appearing  on  the
Certificate  Register.  The  Trustee  shall  also,  within  45  days  after  the
occurrence  of any Event of Default  known to the Trustee,  give written  notice
thereof to  Certificateholders,  unless  such  Event of Default  shall have been
cured or waived  prior to the  issuance  of such  notice and within  such 45-day
period.

     Section 6.17. Notification to Holders. Subject to the provisions of Section
8.01  hereof,  during  the  continuance  of any  Event of  Default,  Holders  of
Certificates  evidencing  not less than 25% of the Class  Certificate  Principal
Amount (or Percentage  Interest) of each Class of Certificates  affected thereby
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  or any
successor  master  servicer  from its  rights  and  duties  as  master  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 non-assenting Certificateholders.

     Section 6.18. Directions by Certificateholders and Duties of Trustee During
Event of Default.  In the event that the Trustee shall have actual  knowledge of
any action or  inaction  of the Master  Servicer  that would  become an Event of
Default upon the Master Servicer's  failure to remedy the same after notice, the
Trustee shall give notice thereof to the Master Servicer.

                                  ARTICLE VII.

                         PURCHASE AND TERMINATION OF THE

                      TRUST FUND; PURCHASE OF CERTIFICATES

     Section 7.01.  Termination of Trust Fund Upon  Repurchase or Liquidation of
All Mortgage Loans. (a) The respective  obligations and  responsibilities of the
Trustee and the Master Servicer created hereby (other than the obligation of the
Trustee to make payments to Certificateholders as set forth in Section 7.02, the
obligation of the Master Servicer to make a final  remittance to the Trustee for
deposit  into  the  Certificate   Account  pursuant  to  Section  4.01  and  the
obligations of the Master Servicer to the Trustee  pursuant to Sections 9.10 and
9.14)  shall  terminate  on the  earlier  of (i)  the  final  payment  or  other
liquidation  of the last  Mortgage  Loan  remaining  in the  Trust  Fund and the
disposition  of all REO Property  and (ii) the sale of the property  held by the
Trust Fund in accordance with Section 7.01(b) or (c); provided, however, that in
no event shall the Trust Fund created hereby  continue beyond the earlier of (i)
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's,  living  on the  date  hereof,  and (ii) the  Latest
Possible  Maturity Date. Any  termination of the Trust Fund shall be carried out
in such a manner so that the  termination of each REMIC  included  therein shall
qualify as a "qualified liquidation" under the REMIC Provisions.

     (b) On any  Distribution  Date  occurring  after  the  date  on  which  the
Aggregate  Loan  Balance is less than 10% of the  Cut-off  Date  Aggregate  Loan
Balance, Aurora shall have the option to cause the Trust Fund to adopt a plan of
complete  liquidation  pursuant to Section  7.03(a)(i) hereof to sell all of its
property.  Upon exercise of such option, the property of the Trust Fund shall be
sold at a price  (the  "Termination  Price")  equal to:  (i) 100% of the  unpaid
principal  balance  of each  Mortgage  Loan on the  day of  such  purchase  plus
interest  accrued  thereon at the  applicable  Mortgage Rate with respect to any
Mortgage Loan to the Due Date in the Collection Period immediately preceding the
related  Distribution  Date to the  date of such  repurchase  and  (ii) the fair
market value of any REO Property and any other property held by any REMIC,  such
fair market value to be determined by an appraiser or appraisers mutually agreed
upon by the Master Servicer and the Trustee.

     (c) On any Distribution Date occurring on or after the Distribution Date on
which the aggregate  Certificate  Principal Amount of the Senior Certificates is
less  than 35% of the  Class  Certificate  Principal  Amount  thereof  as of the
Closing Date, the Class X  Certificateholder  shall have the option to cause the
Trust  Fund  to  adopt  a plan  of  complete  liquidation  pursuant  to  Section
7.03(a)(i) hereof to sell all of its property. Upon exercise of such option, the
property  of the Trust Fund shall be sold to the Class X  Certificateholder  for
the Termination  Price. 

     (d) (i) On any  Distribution  Date  occurring on or after the  Distribution
Date  on  which  the  aggregate  Certificate  Principal  Amount  of  the  Senior
Certificates is less than 35% of the Class Certificate  Principal Amount thereof
as of the Closing Date,  Lehman  Pass-Through  Securities Inc.  ("LPTSI") shall,
have the option to purchase all, but not less than all, of the Class A-1,  Class
A-2, Class M-1, Class M-2 and Class B Certificates (the "Purchase Certificates")
for a price equal to the outstanding  Certificate  Principal Amount of each such
Certificate plus interest accrued thereon at the applicable Certificate Interest
Rate and unpaid (the  "Acquisition  Price").  In order to exercise  such option,
LPTSI must deliver to the Trustee  written  notice of its intent to purchase all
of the Purchase Certificates and of the Distribution Date on which it intends to
do so not less than 20 days prior to such  Distribution  Date. 

          (ii) On or before  the date of  delivery  of the notice  specified  in
paragraph (i) above, LPTSI shall deposit with the Trustee cash,  certificates of
deposit or a letter of credit in an amount  sufficient to provide for payment of
the  Acquisition  Price.  Such amount shall be paid by the Trustee to Holders of
Purchase Certificates upon surrender for purchase as provided below.

          (iii) Notice of any purchase of the Purchase  Certificates pursuant to
the provisions of this subsection,  specifying the Distribution  Date upon which
such  purchase  shall be made,  shall be given  promptly by the Trustee by first
class  mail to Holders of the  Purchase  Certificates  mailed no later than five
Business Days after the Trustee has received  notice from LPTSI of its intent to
exercise its right to repurchase  the Purchase  Certificates.  Such notice shall
specify (A) the Distribution  Date upon which the Acquisition Price will be paid
upon transfer of the Purchase  Certificates  (the "Acquisition  Date"),  and the
time and place at which any  Purchase  Certificate  held in  definitive  form by
other than the Clearing  Agency (a "Definitive  Purchase  Certificate")  must be
surrendered for  cancellation  and (B) that the Acquisition  Price applicable to
each Purchase  Certificate  constitutes  payment in full  therefor,  and that no
further amounts in respect of interest or principal will be distributable to the
Holders from whom such  Certificates  are purchased by LPTSI.  The Trustee shall
give such notice to the Master  Servicer  and the  Certificate  Registrar at the
time  such  notice  is  given  to  Holders  of  the  Certificates.  

          (iv) On the  Acquisition  Date,  the Trustee shall (i) make payment to
each Holder of a Purchase  Certificate of the Acquisition  Price therefor in the
manner in which  distributions are effected under this Agreement and (ii) effect
the  transfer of each such  Certificate  (or interest  therein) to LPTSI,  which
shall  thereafter  (unless it transfers such Certificate in accordance with this
Agreement)  be the Holder (or  Certificate  Owner) of such  Certificate  for all
purposes. Notwithstanding the foregoing, in the event that all of the Holders of
Definitive  Purchase  Certificates  do  not  surrender  their  Certificates  for
purchase  at the time  specified  in the  above-mentioned  written  notice,  the
Trustee shall give a second written notice to such remaining  Certificateholders
to  surrender  their  Certificates  for  purchase.  If within ten days after the
second  notice  any  Definitive  Purchase   Certificates  shall  not  have  been
surrendered for cancellation,  the Trustee may take appropriate steps to contact
the remaining Certificateholders concerning surrender of such Certificates,  and
the cost thereof shall be paid out of the amounts distributable to such Holders.
Subject to applicable  law, The Trustee  shall hold all amounts  payable to such
Holders for the benefit of such Holders.  No interest shall accrue on any amount
held by the  Trustee  and not  distributed  to a  Certificateholder  due to such
Certificateholder's  failure to surrender its  Certificate(s) for payment of the
Acquisition Price thereon in accordance with this Section.  Notwithstanding that
any Definitive  Purchase  Certificate has not been surrendered  after notice and
deposit of the Acquisition  Price as provided above, on the Acquisition Date the
Trustee shall cancel such  Certificate and effect a transfer of such Certificate
(or interest therein) to LPTSI, which shall thereafter (unless it transfers such
Certificate  in accordance  with this  Agreement) be the Holder (or  Certificate
Owner) of such Certificate for all purposes.

     Section 7.02.  Procedure Upon  Termination of Trust Fund. (a) Notice of any
termination  pursuant  to  the  provisions  of  Section  7.01,   specifying  the
Distribution  Date upon  which the final  distribution  shall be made,  shall be
given promptly by the Trustee by first class mail to  Certificateholders  mailed
upon (x) the sale of the  property of the Trust Fund by the Trustee  pursuant to
Section  7.01 (c),  (y) no later than five  Business  Days after the Trustee has
received notice from the Class R Certificateholder of its intent to exercise its
right to cause the  termination of the Trust Fund pursuant to Section 7.01(b) or
(z) upon the final payment or other liquidation of the last Mortgage Loan or REO
Property in the Trust Fund. Such notice shall specify (A) the Distribution  Date
upon which final  distribution on the Certificates of all amounts required to be
distributed  to  Certificateholders  pursuant to Section  5.02 will be made upon
presentation  and surrender of the  Certificates  at the Corporate Trust Office,
and (B) that the Record Date otherwise  applicable to such  Distribution Date is
not applicable,  distribution being made only upon presentation and surrender of
the Certificates at the office or agency of the Trustee therein  specified.  The
Trustee  shall  give such  notice to the  Master  Servicer  and the  Certificate
Registrar at the time such notice is given to Holders of the Certificates.  Upon
any such  termination,  the duties of the Certificate  Registrar with respect to
the Certificates shall terminate and the Trustee shall terminate, or request the
Master  Servicer  to  terminate,   the  Collection  Account  it  maintains,  the
Certificate Account and any other account or fund maintained with respect to the
Certificates,  subject to the Trustee's obligation hereunder to hold all amounts
payable to Certificateholders in trust without interest pending such payment.

     (b)  In  the  event  that  all  of  the  Holders  do  not  surrender  their
Certificates  for  cancellation  within three months after the time specified in
the  above-mentioned  written  notice,  the Trustee 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
one  year  after  the  second  notice  any  Certificates  shall  not  have  been
surrendered for cancellation,  the Trustee may take appropriate steps to contact
the remaining Certificateholders concerning surrender of such Certificates,  and
the cost thereof shall be paid out of the amounts distributable to such Holders.
If within two years after the second notice any Certificates shall not have been
surrendered for cancellation, the Trustee shall, subject to applicable state law
relating to escheatment,  hold all amounts distributable to such Holders for the
benefit of such  Holders.  No  interest  shall  accrue on any amount held by the
Trustee   and   not   distributed   to   a   Certificateholder   due   to   such
Certificateholder's  failure to surrender its  Certificate(s) for payment of the
final distribution thereon in accordance with this Section.

     Section 7.03. Additional Trust Fund Termination Requirements. (a) The Trust
Fund  shall  be  terminated  in   accordance   with  the  following   additional
requirements,  unless the Trustee seeks (at the request of the Master Servicer),
and subsequently  receives,  an Opinion of Counsel (at the expense of the Master
Servicer),  addressed to the Trustee to the effect that the failure of the Trust
Fund to comply with the requirements of this Section 7.03 will not (i) result in
the  imposition  of taxes on any REMIC under the REMIC  Provisions or (ii) cause
any REMIC  established  hereunder to fail to qualify as a REMIC at any time that
any Certificates are outstanding:

                    (i)  Within 89 days  prior to the time of the  making of the
                    final  payment  on  the  Certificates,   the  Trustee  (upon
                    notification  by  the  Special   Servicer  or  the  Class  X
                    Certificateholder  that it intends to exercise its option to
                    cause the  termination of the Trust Fund) shall adopt a plan
                    of complete  liquidation of the Trust Fund on behalf of each
                    REMIC,  meeting the requirements of a qualified  liquidation
                    under the REMIC Provisions;

          (i) The sale of the assets of the Trust Fund  pursuant to Section 7.02
shall be a sale for cash and  shall  occur at or after the time of  adoption  of
such a plan of complete liquidation and prior to the time of making of the final
payment on the Certificates;

          (ii) On the date specified for final payment of the Certificates,  the
Trustee  shall  make  final  distributions  of  principal  and  interest  on the
Certificates in accordance with Section 5.02 and, after payment of, or provision
for any outstanding  expenses,  distribute or credit, or cause to be distributed
or credited,  to the Holders of the Residual Certificates all cash on hand after
such final payment (other than cash retained to meet claims), and the Trust Fund
(and each REMIC)  shall  terminate  at that time;  and 

          (iii) In no event may the final  payment  on the  Certificates  or the
final distribution or credit to the Holders of the Residual Certificates be made
after the 89th day from the date on which the plan of  complete  liquidation  is
adopted.

     (b) By its acceptance of a Residual Certificate, each Holder thereof hereby
(i)  authorizes  the Trustee to take such action as may be  necessary to adopt a
plan of complete  liquidation  of the related REMIC and (ii) agrees to take such
other action as may be necessary to adopt a plan of complete  liquidation of the
related REMIC, which  authorization shall be binding upon all successor Residual
Certificateholders.

                                  ARTICLE VIII.

                          RIGHTS OF CERTIFICATEHOLDERS

     Section 8.01.  Limitation on Rights of Holders. (a) The death or incapacity
of any  Certificateholder  shall not operate to terminate this Agreement or this
Trust Fund, 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 this Trust Fund,  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 Master  Servicer or the operation  and  management of the
Trust Fund, 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.

     (b)  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 Trustee a written notice of an Event
of Default and of the continuance thereof, as hereinbefore  provided, and unless
also the  Holders  of  Certificates  evidencing  not less  than 25% of the Class
Certificate  Principal  Amount (or Percentage  Interest) of Certificates of each
Class  affected  thereby  shall have made  written  request  upon the Trustee to
institute such action,  suit or proceeding in its own name as Trustee  hereunder
and shall have  offered  to the  Trustee  such  reasonable  indemnity  as it may
require  against the cost,  expenses and  liabilities to be incurred  therein or
thereby,  and the  Trustee,  for sixty  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 and no direction  inconsistent with such written
request  has been  given  such  Trustee  during  such  sixty-day  period by such
Certificateholders;  it being  understood  and  intended,  and  being  expressly
covenanted by each Certificateholder with every other  Certificateholder and the
Trustee, 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  Trustee  shall be  entitled to such relief as can be
given either at law or in equity.

     Section 8.02.  Access to List of Holders.  (a) If the Trustee is not acting
as Certificate Registrar,  the Certificate Registrar will furnish or cause to be
furnished to the Trustee,  within fifteen days after receipt by the  Certificate
Registrar  of a request by the Trustee in writing,  a list,  in such form as the
Trustee  may   reasonably   require,   of  the  names  and   addresses   of  the
Certificateholders of each Class as of the most recent Record Date.

     (b) If three or more Holders or Certificate Owners (hereinafter referred to
as "Applicants")  apply in writing to the Trustee,  and such application  states
that the  Applicants  desire to  communicate  with other Holders 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  Trustee  shall,  within  five  Business  Days  after  the  receipt  of such
application, afford such Applicants reasonable access during the normal business
hours of the Trustee to the most recent list of  Certificateholders  held by the
Trustee or shall,  as an  alternative,  send, at the  Applicants'  expense,  the
written communication  proffered by the Applicants to all  Certificateholders at
their addresses as they appear in the Certificate Register.

     (c) Every Holder or Certificate  Owner, if the Holder is a Clearing Agency,
by receiving and holding a Certificate,  agrees with the  Depositor,  the Master
Servicer,  the Certificate Registrar and the Trustee that neither the Depositor,
the Master  Servicer,  the  Certificate  Registrar nor the Trustee shall be held
accountable by reason of the disclosure of any such  information as to the names
and addresses of the Certificateholders hereunder, regardless of the source from
which  such  information  was  derived.

     Section 8.03.  Acts of Holders of  Certificates.  (a) Any request,  demand,
authorization,  direction,  notice,  consent, waiver or other action provided by
this  Agreement  to be given or taken by Holders or  Certificate  Owner,  if the
Holder is a Clearing  Agency,  may be embodied in and  evidenced  by one or more
instruments of  substantially  similar tenor signed by such Holders in person or
by agent duly appointed in writing;  and, except as herein  otherwise  expressly
provided, such action shall become effective when such instrument or instruments
are delivered to the Trustee and, where expressly required herein, to the Master
Servicer.  Such instrument or instruments  (as the action  embodies  therein and
evidenced  thereby) are herein sometimes  referred to as an "Act" of the Holders
signing  such  instrument  or  instruments.  Proof  of  execution  of  any  such
instrument or of a writing  appointing  any such agents shall be sufficient  for
any purpose of this  Agreement and conclusive in favor of the Trustee and Master
Servicer,  if made in the manner  provided in this Section.  Each of the Trustee
and  Master  Servicer  shall  promptly  notify  the other of receipt of any such
instrument by it, and shall  promptly  forward a copy of such  instrument to the
other.

     (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
the certificate of any notary public or other officer  authorized by law to take
acknowledgments or deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof. Whenever such execution is
by an officer of a corporation  or a member of a  partnership  on behalf of such
corporation or partnership,  such certificate or affidavit shall also constitute
sufficient  proof of his  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)  shall  be  proved  by the
Certificate  Register,  and neither the Trustee,  the Master  Servicer,  nor the
Depositor  shall be affected  by any notice to the  contrary.  

     (d) Any request, demand, authorization,  direction, notice, consent, waiver
or other action by 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 or the
Master Servicer in reliance  thereon,  whether or not notation of such action is
made upon such Certificate.


                                  ARTICLE IX.

                 ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

                             BY THE MASTER SERVICER

     Section 9.01.  Duties of the Master Servicer.  The  Certificateholders,  by
their  purchase  and  acceptance  of  the  Certificates,  appoint  Norwest  Bank
Minnesota,  National Association,  as Master Servicer.  For and on behalf of the
Depositor,  the Trustee and the  Certificateholders,  the Master  Servicer shall
master  service the Mortgage  Loans in  accordance  with the  provisions of this
Agreement and the provisions of the applicable Servicing Agreement.

     Section 9.02.  Master Servicer Fidelity Bond and Master Servicer Errors and
Omissions  Insurance  Policy.  (a) The Master  Servicer,  at its expense,  shall
maintain in effect a Master Servicer  Fidelity Bond and a Master Servicer Errors
and  Omissions  Insurance  Policy,   affording  coverage  with  respect  to  all
directors,   officers,  employees  and  other  Persons  acting  on  such  Master
Servicer's  behalf,  and covering errors and omissions in the performance of the
Master  Servicer's  obligations  hereunder.   The  Master  Servicer  Errors  and
Omissions  Insurance  Policy and the Master  Servicer  Fidelity Bond shall be in
such form and amount  that would  meet the  requirements  of FNMA or FHLMC if it
were the purchaser of the Mortgage Loans.  The Master Servicer shall (i) require
each  Servicer  to  maintain  an Errors  and  Omissions  Insurance  Policy and a
Servicer  Fidelity Bond in  accordance  with the  provisions  of the  applicable
Servicing Agreement,  (ii) cause each Servicer to provide to the Master Servicer
certificates evidencing that such policy and bond is in effect and to furnish to
the Master Servicer any notice of  cancellation,  non-renewal or modification of
the  policy  or  bond  received  by it,  as and to the  extent  provided  in the
applicable Servicing Agreement, and (iii) furnish copies of the certificates and
notices referred to in clause (ii) to the Trustee upon its request.

     (b) The Master  Servicer shall promptly  report to the Trustee any material
changes  that may  occur in the  Master  Servicer  Fidelity  Bond or the  Master
Servicer Errors and Omissions Insurance Policy and shall furnish to the Trustee,
on request,  certificates  evidencing that such bond and insurance policy are in
full force and effect.  The Master Servicer shall promptly report to the Trustee
all cases of embezzlement or fraud, if such events involve funds relating to the
Mortgage  Loans.  The total losses,  regardless of whether claims are filed with
the applicable  insurer or surety,  shall be disclosed in such reports  together
with the amount of such  losses  covered by  insurance.  If a bond or  insurance
claim report is filed with any of such bonding companies or insurers, the Master
Servicer  shall  promptly  furnish  a copy of such  report to the  Trustee.  Any
amounts  relating to the Mortgage Loans  collected by the Master  Servicer under
any such bond or policy shall be promptly remitted by the Master Servicer to the
Trustee for deposit into the Certificate  Account.  Any amounts  relating to the
Mortgage Loans  collected by any Servicer under any such bond or policy shall be
remitted  to the  Master  Servicer  to the  extent  provided  in the  applicable
Servicing Agreement.

     Section  9.03.   Master   Servicer's   Financial   Statements  and  Related
Information.  For each year this  Agreement  is in effect,  the Master  Servicer
shall submit to the Trustee,  each Rating Agency and the Depositor a copy of its
annual unaudited  financial  statements on or prior to May 31 of each year. Such
financial statements shall include a balance sheet, income statement,  statement
of retained  earnings,  statement of additional  paid-in  capital,  statement of
changes in financial  position and all related  notes and schedules and shall be
in comparative  form,  certified by a nationally  recognized firm of Independent
Accountants  to the effect that such  statements  were  examined and prepared in
accordance  with generally  accepted  accounting  principles  applied on a basis
consistent with that of the preceding year.

     Section  9.04.  Power to Act;  Procedures.  (a) The Master  Servicer  shall
master  service  the  Mortgage  Loans and shall have full  power and  authority,
subject to the REMIC Provisions and the provisions of Article X hereof, and each
Servicer  shall have full power and  authority  (to the extent  provided  in the
applicable  Servicing  Agreement)  to do any and  all  things  that it may  deem
necessary or desirable in connection  with the servicing and  administration  of
the Mortgage Loans,  including but not limited to the power and authority (i) to
execute  and  deliver,  on behalf  of the  Certificateholders  and the  Trustee,
customary  consents  or waivers and other  instruments  and  documents,  (ii) to
consent to transfers of any Mortgaged  Property and  assumptions of the Mortgage
Notes and  related  Mortgages,  (iii) to  collect  any  Insurance  Proceeds  and
Liquidation Proceeds,  and (iv) to effectuate foreclosure or other conversion of
the  ownership of the  Mortgaged  Property  securing any Mortgage  Loan, in each
case,  in  accordance  with the  provisions  of this  Agreement  and the related
Servicing Agreement, as applicable;  provided that the Master Servicer shall not
take, or knowingly  permit any Servicer to take, any action that is inconsistent
with or prejudices the interests of the Trust Fund or the  Certificateholders in
any Mortgage Loan or the rights and interests of the Depositor,  the Trustee and
the Certificateholders under this Agreement. The Master Servicer shall represent
and  protect the  interests  of the Trust Fund in the same manner as it protects
its  own  interests  in  mortgage  loans  in its  own  portfolio  in any  claim,
proceeding or litigation  regarding a Mortgage Loan and shall not make or permit
any  Servicer to make any  modification,  waiver or amendment of any term of any
Mortgage  Loan that would  cause the Trust Fund to fail to qualify as a REMIC or
result in the imposition of any tax under Section  860F(a) or Section 860G(d) of
the Code. Without limiting the generality of the foregoing,  the Master Servicer
in its own name or in the name of a Servicer,  and each Servicer,  to the extent
such  authority is delegated to such Servicer by the Master  Servicer  under the
applicable  Servicing  Agreement,  is hereby  authorized  and  empowered  by the
Trustee when the Master Servicer or a Servicer,  as the case may be, believes it
appropriate  in its best  judgment and in  accordance  with  Accepted  Servicing
Practices and the applicable  Servicing  Agreement,  to execute and deliver,  on
behalf of itself and the Certificateholders, the Trustee or any of them, any and
all instruments of satisfaction or  cancellation,  or of partial or full release
or discharge and all other comparable instruments,  with respect to the Mortgage
Loans and with respect to the  Mortgaged  Properties.  The Trustee shall furnish
the Master Servicer,  upon request,  with any powers of attorney  empowering the
Master  Servicer  or  any  Servicer  to  execute  and  deliver   instruments  of
satisfaction or cancellation, or of partial or full release or discharge, and to
foreclose  upon  or  otherwise  liquidate  Mortgaged  Property,  and to  appeal,
prosecute  or defend in any court action  relating to the Mortgage  Loans or the
Mortgaged  Property,  in accordance with the applicable  Servicing Agreement and
this Agreement,  and the Trustee shall execute and deliver such other documents,
as the Master  Servicer may  request,  necessary  or  appropriate  to enable the
Master  Servicer to master  service and  administer the Mortgage Loans and carry
out its duties  hereunder,  in each case in accordance  with Accepted  Servicing
Practices (and the Trustee shall have no liability for misuse of any such powers
of attorney by the Master  Servicer or any Servicer).  If the Master Servicer or
the  Trustee  has been  advised  that it is likely that the laws of the state in
which  action is to be taken  prohibit  such  action if taken in the name of the
Trustee  or that the  Trustee  would be  adversely  affected  under  the  "doing
business"  or tax laws of such state if such  action is taken in its name,  then
upon request of the Trustee,  the Master Servicer shall join with the Trustee in
the  appointment  of a  co-trustee  pursuant  to  Section  6.09  hereof.  In the
performance of its duties hereunder, the Master Servicer shall be an independent
contractor and shall not, except in those instances where it is taking action in
the name of the Trustee, be deemed to be the agent of the Trustee.

     (b) In master  servicing and  administering  the Mortgage Loans, the Master
Servicer  shall  employ  procedures,  and shall  cause each  Servicer  to employ
procedures (including,  but not limited to, collection  procedures),  consistent
with the applicable  Servicing  Agreement.  Consistent  with the foregoing,  the
Master Servicer may, and may permit any Servicer to, in its discretion (i) waive
any late  payment  charge  or any  prepayment  charge  or  penalty  interest  in
connection  with the prepayment of a Mortgage Loan and (ii) extend the due dates
for  payments  due on a Mortgage  Note for a period not  greater  than 120 days;
provided,  however, that the maturity of any Mortgage Loan shall not be extended
past the date on which the final payment is due on the latest maturing  Mortgage
Loan as of the Cut-off Date.  In the event of any extension  described in clause
(ii) above,  the Master  Servicer shall make or cause to be made Advances on the
related  Mortgage Loan in accordance  with the provisions of Section 5.04 on the
basis of the  amortization  schedule of such Mortgage Loan without  modification
thereof by reason of such extension. Notwithstanding anything to the contrary in
this  Agreement,  the Master  Servicer shall not,  unless default by the related
Mortgagor  is, in the  reasonable  judgment  of the Master  Servicer,  imminent,
permit  any  modification,  waiver  or  amendment  of any  material  term of any
Mortgage Loan  (including  but not limited to the interest  rate,  the principal
balance,  the amortization  schedule,  or any other term affecting the amount or
timing of payments on the Mortgage Loan or the collateral  therefor)  unless the
Master  Servicer  shall have provided or caused to be provided to the Trustee an
Opinion of Counsel in writing to the effect  that such  modification,  waiver or
amendment  would not be  treated  as giving  rise to a new debt  instrument  for
federal  income tax  purposes and would not  adversely  affect the status of the
REMIC.

     Section  9.05.   Servicing  Agreements  Between  the  Master  Servicer  and
Servicers;  Enforcement of Servicers' Obligations.  (a) Each Servicing Agreement
requires the applicable Servicer to service the Mortgage Loans in ons accordance
with the provisions thereof. References in this Agreement to actions taken or to
be  taken  by the  Master  Servicer  include  actions  taken or to be taken by a
Servicer on behalf of the Master Servicer. Any fees and other amounts payable to
such Servicers shall be deducted from amounts remitted to the Master Servicer by
the applicable Servicer and shall not be an obligation of the Trust.

     (b)  The  Master  Servicer,   for  the  benefit  of  the  Trustee  and  the
Certificateholders,  shall enforce the  obligations  of each Servicer  under the
related  Servicing  Agreement,  and shall, in the event that a Servicer fails to
perform its  obligations  in accordance  with the related  Servicing  Agreement,
terminate the rights and obligations of such Servicer  thereunder and either act
as servicer of the related  Mortgage  Loans or enter into a Servicing  Agreement
with a successor Servicer. Such enforcement,  including, without limitation, the
legal prosecution of claims, termination of Servicing Agreements and the pursuit
of other appropriate remedies,  shall be in such form and carried out to such an
extent  and at such time as the  Master  Servicer,  in its good  faith  business
judgment,  would require were it the owner of the related  Mortgage  Loans.  The
Master Servicer shall pay the costs of such enforcement at its own expense,  and
shall be reimbursed  therefor  initially (i) from a general  recovery  resulting
from such enforcement only to the extent, if any, that such recovery exceeds all
amounts  due in respect of the  related  Mortgage  Loans or (ii) from a specific
recovery of costs,  expenses or  attorneys'  fees against the party against whom
such  enforcement  is  directed,  and then,  to the extent that such amounts are
insufficient to reimburse the Master Servicer for the costs of such enforcement,
(iii) from the Collection Account.

     Section 9.06.  Collection of Taxes,  Assessments and Similar Items.  (a) To
the extent provided in the applicable Servicing  Agreement,  the Master Servicer
shall cause each  Servicer  to  establish  and  maintain  one or more  custodial
accounts at a depository institution (which may be a depository institution with
which the Master Servicer or any Servicer  establishes  accounts in the ordinary
course of its  servicing  activities),  the accounts of which are insured to the
maximum  extent  permitted  by the FDIC (each,  an "Escrow  Account")  and shall
deposit therein any collections of amounts  received with respect to amounts due
for taxes,  assessments,  water rates, Standard Hazard Insurance Policy premiums
or any comparable items for the account of the Mortgagors.  Withdrawals from any
Escrow  Account may be made (to the extent  amounts have been  escrowed for such
purpose)  only in  accordance  with the  applicable  Servicing  Agreement.  Each
Servicer shall be entitled to all  investment  income not required to be paid to
Mortgagors  on any  Escrow  Account  maintained  by such  Servicer.  The  Master
Servicer  shall  make  (or  cause  to be made)  to the  extent  provided  in the
applicable  Servicing  Agreement  advances to the extent  necessary  in order to
effect  timely  payment of taxes,  water  rates,  assessments,  Standard  Hazard
Insurance  Policy  premiums or comparable  items in connection  with the related
Mortgage Loan (to the extent that the Mortgagor is required,  but fails,  to pay
such  items),  provided  that it has  determined  that the funds so advanced are
recoverable from escrow payments,  reimbursement  pursuant to Section 4.02(v) or
otherwise.

     (b) Costs incurred by the Master  Servicer or by Servicers in effecting the
timely  payment  of taxes  and  assessments  on the  properties  subject  to the
Mortgage Loans may be added to the amount owing under the related  Mortgage Note
where the terms of the  Mortgage  Note so permit;  provided,  however,  that the
addition  of any such cost  shall not be taken  into  account  for  purposes  of
calculating the distributions to be made to  Certificateholders.  Such costs, to
the extent that they are unanticipated, extraordinary costs, and not ordinary or
routine costs shall be  recoverable by the Master  Servicer  pursuant to Section
4.02(v).

     Section 9.07. Termination of Servicing Agreements; Successor Servicers. (a)
The Master Servicer shall be entitled to terminate the rights and obligations of
any Servicer under the  applicable  Servicing  Agreement in accordance  with the
terms and conditions of such  Servicing  Agreement and without any limitation by
virtue of this Agreement; provided, however, that in the event of termination of
Servicing  Agreement by the Master Servicer or the related Servicer,  the Master
Servicer  shall  provide  for the  servicing  of the related  Mortgage  Loans as
follows:  (i) upon any such termination of Option One as Servicer,  servicing of
the related Mortgage Loans shall be transferred to Aurora,  provided that Aurora
exercises its option to acquire such servicing as provided below;  (ii) upon any
such termination of Aurora as Servicer,  servicing of the related Mortgage Loans
shall be transferred to the Special Servicer, provided that the Special Servicer
exercises its option to acquire such servicing as provided below; and (iii) upon
any such  termination of Ocwen, a successor  special servicer shall be appointed
as provided in the Special Servicing Agreement.  In each such case, servicing of
the related  Mortgage  Loans shall be performed by the  applicable  successor in
accordance  with  the  provisions  of the  Servicing  Agreement  to  which  such
successor is a party.  In the event that any such  successor  servicer  fails to
notify the Master Servicer within 15 days of such proposed transfer described in
clause (i) or (ii) above of its intention to exercise its option to acquire such
servicing and to service the related Mortgage Loans in accordance with the terms
of the  applicable  Servicing  Agreement,  the Master  Servicer  shall appoint a
successor servicer or special servicer or shall itself (or through an Affiliate)
act as servicer or special servicer of the related Mortgage Loans.

     Notwithstanding  the  foregoing  provisions  to the  extent  applicable  to
termination of the rights and obligations of the Special Servicer, the Directing
Holder, if any, shall have the rights accorded to it under the Special Servicing
Agreement.

     (b) If the Master Servicer acts as Servicer,  it will not assume  liability
for  the  representations  and  warranties  of the  Servicer,  if  any,  that it
replaces. The Master Servicer shall use reasonable efforts to have the successor
Servicer  assume  liability for the  representations  and warranties made by the
terminated  Servicer in respect of the related  Mortgage Loans, and in the event
of any such  assumption  by the  successor  Servicer,  the Trustee or the Master
Servicer, as applicable,  may, in the exercise of its business judgment, release
the terminated Servicer from liability for such representations and warranties.

     Section 9.08. Master Servicer Liable for Enforcement.  Notwithstanding  any
Servicing  Agreement,  the Master Servicer shall remain  obligated and liable to
the Trustee and the Certificateholders in accordance with the provisions of this
Agreement,  to the extent of its obligations  hereunder,  without  diminution of
such  obligation  or  liability  by  virtue  of  such  Servicing  Agreements  or
arrangements.  The Master  Servicer  shall  ensure that the  Mortgage  Loans are
serviced in accordance  with the  provisions of this Agreement and shall enforce
the   provisions   of  each   Servicing   Agreement   for  the  benefit  of  the
Certificateholders.  The Master  Servicer  shall be  entitled  to enter into any
agreement  with its Servicers  for  indemnification  of the Master  Servicer and
nothing  contained  in this  Agreement  shall be deemed to limit or modify  such
indemnification.

     Section 9.09. No Contractual  Relationship Between Servicers and Trustee or
Depositor.  Any  Servicing  Agreement  that may be  entered  into and any  other
transactions or services  relating to the Mortgage Loans involving a Servicer in
its capacity as such and not as an originator shall be deemed to be between such
Servicer,  Lehman  Capital  and the Master  Servicer,  and the  Trustee  and the
Depositor shall not be deemed parties thereto and shall have no claims,  rights,
obligations,  duties or liabilities  with respect to such Servicer except as set
forth in Section 9.10 hereof.

     Section  9.10.  Assumption  of Servicing  Agreement by Trustee.  (a) In the
event the Master  Servicer shall for any reason no longer be the Master Servicer
(including by reason of any Event of Default under this Agreement),  the Trustee
shall thereupon assume all of the rights and obligations of such Master Servicer
hereunder and under each  Servicing  Agreement  entered into with respect to the
Mortgage  Loans.  The Trustee,  its designee or any  successor  master  servicer
appointed  by the  Trustee  shall be deemed to have  assumed  all of the  Master
Servicer's  interest  herein and therein to the same extent as if such Servicing
Agreement  had been  assigned  to the  assuming  party,  except  that the Master
Servicer  shall not thereby be relieved of any liability or  obligations  of the
Master Servicer under such Servicing Agreement accruing prior to its replacement
as Master  Servicer,  and shall be liable to the Trustee,  and hereby  agrees to
indemnify  and hold  harmless the Trustee  from and against all costs,  damages,
expenses and liabilities  (including reasonable attorneys' fees) incurred by the
Trustee as a result of such liability or obligations of the Master  Servicer and
in connection with the Trustee's assumption (but not its performance,  except to
the extent that costs or  liability of the Trustee are created or increased as a
result of negligent or wrongful acts or omissions of the Master  Servicer  prior
to its  replacement as Master  Servicer) of the Master  Servicer's  obligations,
duties or responsibilities thereunder.

     (b) The Master Servicer that has been terminated shall, upon request of the
Trustee  but at the  expense of such Master  Servicer,  deliver to the  assuming
party all documents  and records  relating to each  Servicing  Agreement and the
related Mortgage Loans and an accounting of amounts collected and held by it and
otherwise use its best efforts to effect the orderly and  efficient  transfer of
each Servicing Agreement to the assuming party.

     Section 9.11. "Due-on-Sale" Clauses;  Assumption Agreements.  To the extent
provided in the applicable  Servicing  Agreement,  to the extent  Mortgage Loans
contain  enforceable  due-on-sale  clauses,  the Master Servicer shall cause the
Servicers to enforce such clauses in accordance  with the  applicable  Servicing
Agreement.  If applicable law prohibits the enforcement of a due-on-sale  clause
or such clause is  otherwise  not  enforced in  accordance  with the  applicable
Servicing  Agreement,  and, as a  consequence,  a Mortgage Loan is assumed,  the
original  Mortgagor  may be  released  from  liability  in  accordance  with the
applicable Servicing Agreement.

     Section 9.12.  Release of Mortgage  Files.  (a) Upon becoming  aware of the
payment in full of any Mortgage Loan, or the receipt by the Master Servicer of a
notification  that payment in full has been  escrowed in a manner  customary for
such purposes for payment to  Certificateholders  on the next Distribution Date,
the Master  Servicer  will, or will cause the applicable  Servicer to,  promptly
notify the Trustee  (or the  applicable  Custodian)  by a  certification  (which
certification  shall include a statement to the effect that all amounts received
in  connection  with such  payment  that are  required  to be  deposited  in the
Collection  Account  maintained by the Master Servicer  pursuant to Section 4.01
have been or will be so deposited) of a Servicing  Officer and shall request the
Trustee or the applicable  Custodian,  to deliver to the applicable Servicer the
related  Mortgage  File.  Upon receipt of such  certification  and request,  the
Trustee or the applicable  Custodian (with the consent,  and at the direction of
the Trustee), shall promptly release the related Mortgage File to the applicable
Servicer  and the Trustee  shall have no further  responsibility  with regard to
such  Mortgage  File.  Upon any such  payment in full,  the Master  Servicer  is
authorized, and each Servicer, to the extent such authority is delegated to such
Servicer by the Master  Servicer under the applicable  Servicing  Agreement,  is
authorized,  to give,  as agent  for the  Trustee,  as the  mortgagee  under the
Mortgage  that secured the Mortgage  Loan, an  instrument  of  satisfaction  (or
assignment  of mortgage  without  recourse)  regarding  the  Mortgaged  Property
subject to the Mortgage, which instrument of satisfaction or assignment,  as the
case may be,  shall be  delivered  to the  Person or  Persons  entitled  thereto
against receipt therefor of such payment, it being understood and agreed that no
expenses  incurred  in  connection  with  such  instrument  of  satisfaction  or
assignment, as the case may be, shall be chargeable to the Collection Account.

     (b) From time to time and as  appropriate  for the servicing or foreclosure
of any Mortgage Loan and in accordance with Accepted Servicing Practices and the
applicable  Servicing  Agreement,  the Trustee shall  execute such  documents as
shall be prepared and furnished to the Trustee by the Master  Servicer,  or by a
Servicer (in form reasonably  acceptable to the Trustee) and as are necessary to
the  prosecution  of  any  such  proceedings.  The  Trustee  or  the  applicable
Custodian,  shall,  upon request of the Master Servicer,  or of a Servicer,  and
delivery to the Trustee or the applicable  Custodian,  of a trust receipt signed
by a  Servicing  Officer  substantially  in the form of Exhibit C,  release  the
related  Mortgage File held in its possession or control to the Master  Servicer
(or the  applicable  Servicer).  Such trust  receipt  shall  obligate the Master
Servicer or  applicable  Servicer to return the Mortgage  File to the Trustee or
applicable  Custodian,  as  applicable,  when the need  therefor  by the  Master
Servicer or applicable  Servicer no longer exists unless the Mortgage Loan shall
be  liquidated,  in which case,  upon  receipt of a  certificate  of a Servicing
Officer  similar  to that  hereinabove  specified,  the trust  receipt  shall be
released by the  Trustee or the  applicable  Custodian,  as  applicable,  to the
Master Servicer (or the applicable Servicer).

     Section 9.13. Documents, Records and Funds in Possession of Master Servicer
To Be Held for Trustee.  (a) The Master  Servicer shall  transmit,  or cause the
applicable  Servicer to transmit,  to the Trustee such documents and instruments
coming into the possession of the Master  Servicer or such Servicer from time to
time as are required by the terms  hereof to be  delivered  to the Trustee.  Any
funds  received  by the  Master  Servicer  or by a  Servicer  in  respect of any
Mortgage Loan or which  otherwise  are collected by the Master  Servicer or by a
Servicer  as  Liquidation  Proceeds  or  Insurance  Proceeds  in  respect of any
Mortgage   Loan  shall  be  held  for  the   benefit  of  the  Trustee  and  the
Certificateholders  subject to the Master Servicer's right to retain or withdraw
from the Collection  Account the Master Servicing Fee and other amounts provided
in this Agreement, and to the right of each Servicer to retain its Servicing Fee
as provided in the applicable  Servicing  Agreement.  The Master Servicer shall,
and shall (to the extent provided in the applicable  Servicing  Agreement) cause
each Servicer to, provide access to information and documentation  regarding the
Mortgage  Loans to the  Trustee,  its  agents and  accountants  at any time upon
reasonable  request and during normal business hours, and to  Certificateholders
that are savings and loan associations, banks or insurance companies, the Office
of Thrift Supervision, the FDIC and the supervisory agents and examiners of such
Office and  Corporation  or examiners of any other  federal or state  banking or
insurance regulatory  authority if so required by applicable  regulations of the
Office of Thrift  Supervision or other regulatory  authority,  such access to be
afforded  without charge but only upon reasonable  request in writing and during
normal business hours at the offices of the Master Servicer designated by it. In
fulfilling  such a request  the Master  Servicer  shall not be  responsible  for
determining the sufficiency of such information.

     (b) All Mortgage Files and funds collected or held by, or under the control
of, the Master  Servicer,  or any  Servicer,  in respect of any Mortgage  Loans,
whether  from  the  collection  of  principal  and  interest  payments  or  from
Liquidation  Proceeds  or  Insurance  Proceeds,  shall  be  held  by the  Master
Servicer,  or by  any  Servicer,  for  and on  behalf  of the  Trustee  and  the
Certificateholders  and shall be and remain the sole and  exclusive  property of
the Trustee; provided, however, that the Master Servicer and each Servicer shall
be entitled to setoff against,  and deduct from, any such funds any amounts that
are properly due and payable to the Master  Servicer or such Servicer under this
Agreement or the applicable Servicing Agreement.

     (c) The Master  Servicer hereby  acknowledges  that  concurrently  with the
execution  of this  Agreement,  the  Trustee  shall own or, to the extent that a
court of competent  jurisdiction shall deem the conveyance of the Mortgage Loans
from Lehman Capital to the Depositor not to constitute a sale, the Trustee shall
have a  security  interest  in the  Mortgage  Loans  and in all  Mortgage  Files
representing  such Mortgage  Loans and in all funds now or hereafter held by, or
under the control of, a Servicer or the Master  Servicer  that are  collected by
any  Servicer or the Master  Servicer in  connection  with the  Mortgage  Loans,
whether as  scheduled  installments  of  principal  and  interest  or as full or
partial  prepayments  of  principal  or interest or as  Liquidation  Proceeds or
Insurance  Proceeds  or  otherwise,  and in all  proceeds of the  foregoing  and
proceeds of proceeds (but excluding any fee or other amounts to which a Servicer
is  entitled  under its  Servicing  Agreement,  or the  Master  Servicer  or the
Depositor is entitled to hereunder); and the Master Servicer agrees that so long
as the Mortgage Loans are assigned to and held by the Trustee,  all documents or
instruments  constituting part of the Mortgage Files, and such funds relating to
the Mortgage  Loans which come into the  possession  or custody of, or which are
subject to the control of, the Master  Servicer or any Servicer shall be held by
the Master  Servicer  or such  Servicer  for and on behalf of the Trustee as the
Trustee's  agent and bailee for purposes of perfecting  the  Trustee's  security
interest therein as provided by the applicable  Uniform Commercial Code or other
laws. (d) The Master  Servicer agrees that it shall not, and shall not authorize
any Servicer to, create,  incur or subject any Mortgage Loans, or any funds that
are  deposited  in any  custodial  account,  Escrow  Account  or the  Collection
Account,  or any funds  that  otherwise  are or may become due or payable to the
Trustee,  to any  claim,  lien,  security  interest,  judgment,  levy,  writ  of
attachment  or other  encumbrance,  nor assert by legal action or otherwise  any
claim or right of setoff against any Mortgage Loan or any funds collected on, or
in connection  with, a Mortgage Loan.

     Section 9.14.  Representations  and Warranties of the Master Servicer.  (a)
The Master  Servicer  hereby  represents  and warrants to the  Depositor and the
Trustee, for the benefit of the Certificateholders, as of the Closing Date that:

                  (i) it is validly  existing and in good standing  under
                  the laws of the United States of America as a national banking
                  association,  and  as  Master  Servicer  has  full  power  and
                  authority  to transact any and all  business  contemplated  by
                  this  Agreement  and to  execute,  deliver and comply with its
                  obligations under the terms of this Agreement,  the execution,
                  delivery and performance of which have been duly authorized by
                  all  necessary  corporate  action  on the  part of the  Master
                  Servicer;

          (i) the  execution  and  delivery  of  this  Agreement  by the  Master
Servicer and its  performance  and  compliance  with the terms of this Agreement
will not (A) violate the Master  Servicer's  charter or bylaws,  (B) violate any
law or regulation or any  administrative  decree or order to which it is subject
or (C) 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 by which it is bound or to which any of its assets are subject, which
violation,  default or breach would  materially and adversely  affect the Master
Servicer's ability to perform its obligations under this Agreement;

          (ii) this Agreement constitutes, assuming due authorization, execution
and delivery hereof by the other respective  parties hereto, a legal,  valid and
binding obligation of the Master Servicer,  enforceable against it in accordance
with the terms hereof,  except as such enforcement may be limited by bankruptcy,
insolvency, reorganization,  moratorium and other laws affecting the enforcement
of creditors' rights in general, and by general equity principles (regardless of
whether such  enforcement  is  considered  in a proceeding in equity or at law);

          (iii) the Master  Servicer is not in default with respect to any order
or  decree  of any  court or any  order or  regulation  of any  federal,  state,
municipal  or  governmental  agency to the extent  that any such  default  would
materially and adversely affect its performance hereunder;

                    (v) the  Master  Servicer  is not a party to or bound by any
                    agreement or instrument or subject to any charter provision,
                    bylaw or any other  corporate  restriction  or any judgment,
                    order, writ, injunction,  decree, law or regulation that may
                    materially  and  adversely  affect  its  ability  as  Master
                    Servicer to perform its obligations  under this Agreement or
                    that  requires  the  consent  of  any  third  person  to the
                    execution of this Agreement or the performance by the Master
                    Servicer of its obligations under this Agreement;

          (iv) 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;

          (v) the Master Servicer,  or an affiliate thereof the primary business
of which is the servicing of  conventional  residential  mortgage  loans,  is an
FNMA-  and   FHLMC-approved   seller/servicer;   

          (vi) no  consent,  approval,  authorization  or order of any  court or
governmental  agency  or  body  is  required  for the  execution,  delivery  and
performance by the Master  Servicer of or compliance by the Master Servicer with
this Agreement or the  consummation  of the  transactions  contemplated  by this
Agreement,  except for such consents,  approvals,  authorizations and orders (if
any)  as  have  been  obtained;  

          (vii)  the  consummation  of the  transactions  contemplated  by  this
Agreement are in the ordinary course of business of the Master Servicer; and 

                    (x) the Master Servicer has obtained an Errors and Omissions
                    Insurance  Policy and a Fidelity  Bond,  each of which is in
                    full force and effect,  and each of which  provides at least
                    such coverage as is required hereunder.

     (b) It is understood and agreed that the representations and warranties set
forth in this  Section  9.14 shall  survive the  execution  and delivery of this
Agreement. The Master Servicer shall indemnify the Depositor and the Trustee and
hold them harmless against any loss,  damages,  penalties,  fines,  forfeitures,
legal fees and related costs, judgments,  and other costs and expenses resulting
from any claim,  demand,  defense or  assertion  based on or grounded  upon,  or
resulting from, a breach of the Master Servicer's representations and warranties
contained in Section  9.14(a).  It is understood and agreed that the enforcement
of the obligation of the Master  Servicer set forth in this Section to indemnify
the Depositor and the Trustee as provided in this Section  constitutes  the sole
remedy  (other  than as set  forth in  Section  6.14) of the  Depositor  and the
Trustee,  respecting a breach of the foregoing  representations  and warranties.
Such  indemnification  shall survive any  termination of the Master  Servicer as
Master Servicer hereunder, and any termination of this Agreement.

         Any cause of action against the Master Servicer  relating to or arising
out of the breach of any  representations  and  warranties  made in this Section
shall accrue upon discovery of such breach by either the  Depositor,  the Master
Servicer  or the  Trustee or notice  thereof  by any one of such  parties to the
other parties.

     (c) It is understood and agreed that the  representations and warranties of
the  Depositor  set forth in  Sections  2.03(a)  through  (f) shall  survive the
execution  and delivery of this  Agreement.  The Depositor  shall  indemnify the
Master  Servicer  and hold it  harmless  against any loss,  damages,  penalties,
fines, forfeitures, legal fees and related costs, judgments, and other costs and
expenses  resulting  from any claim,  demand,  defense or assertion  based on or
grounded upon, or resulting  from, a breach of the  Depositor's  representations
and  warranties  contained  in  Sections  2.03(a)  through  (f)  hereof.  It  is
understood  and agreed that the  enforcement  of the obligation of the Depositor
set forth in this Section to indemnify  the Master  Servicer as provided in this
Section  constitutes the sole remedy of the Master Servicer  respecting a breach
by the  Depositor of the  representations  and  warranties  in Sections  2.03(a)
through (f) hereof.

     Any cause of action against the Depositor relating to or arising out of the
breach of the  representations  and warranties made in Sections  2.03(a) through
(f) hereof shall accrue upon discovery of such breach by either the Depositor or
the Master  Servicer or notice  thereof by any one of such  parties to the other
parties.

     Section 9.15.  Closing  Certificate  and Opinion.  On or before the Closing
Date,  the Master  Servicer  shall cause to be  delivered to the  Depositor  and
Lehman Brothers Inc. an Opinion of Counsel,  dated the Closing Date, in form and
substance reasonably  satisfactory to the Depositor and Lehman Brothers Inc., as
to the due authorization, execution and delivery of this Agreement by the Master
Servicer and the enforceability thereof.

     Section  9.16.  Standard  Hazard  and Flood  Insurance  Policies.  For each
Mortgage  Loan,  the Master  Servicer  shall  maintain or cause to be maintained
standard fire and casualty insurance and, where applicable, flood insurance, all
in accordance  with the provisions of this  Agreement and the related  Servicing
Agreement, as applicable.  It is understood and agreed that such insurance shall
be  with  insurers  meeting  the  eligibility  requirements  set  forth  in  the
applicable  Servicing  Agreement  and that no  earthquake  or  other  additional
insurance  is to be required of any  Mortgagor or to be  maintained  on property
acquired in respect of a defaulted loan,  other than pursuant to such applicable
laws and  regulations as shall at any time be in force and as shall require such
additional insurance.

     Pursuant to Section 4.01, any amounts collected by the Master Servicer,  or
by any  Servicer,  under any  insurance  policies  maintained  pursuant  to this
Section 9.16 (other than amounts to be applied to the  restoration  or repair of
the  property  subject to the related  Mortgage or released to the  Mortgagor in
accordance with the applicable  Servicing Agreement) shall be deposited into the
Collection  Account,  subject to withdrawal  pursuant to Section 4.02.  Any cost
incurred  by the  Master  Servicer  or any  Servicer  in  maintaining  any  such
insurance if the Mortgagor defaults in its obligation to do so shall be added to
the amount owing under the Mortgage Loan where the terms of the Mortgage Loan so
permit; provided, however, that the addition of any such cost shall not be taken
into  account  for  purposes  of  calculating  the  distributions  to be made to
Certificateholders  and shall be  recoverable  by the  Master  Servicer  or such
Servicer pursuant to Section 4.02(v).

     Section 9.17.  Presentment of Claims and Collection of Proceeds. The Master
Servicer  shall,  or shall cause each  Servicer  (to the extent  provided in the
applicable Servicing Agreement) to, prepare and present on behalf of the Trustee
and the  Certificateholders all claims under the Insurance Policies with respect
to the  Mortgage  Loans,  and take  such  actions  (including  the  negotiation,
settlement,  compromise  or  enforcement  of the  insured's  claim)  as shall be
necessary to realize recovery under such policies. Any proceeds disbursed to the
Master Servicer (or disbursed to a Servicer and remitted to the Master Servicer)
in  respect  of such  policies  or bonds  shall  be  promptly  deposited  in the
Collection Account upon receipt, except that any amounts realized that are to be
applied to the repair or  restoration  of the  related  Mortgaged  Property as a
condition  requisite to the  presentation of claims on the related Mortgage Loan
to the insurer under any  applicable  Insurance  Policy need not be so deposited
(or remitted).

     Section 9.18.  Maintenance of the Primary Mortgage Insurance Policies.  (a)
The Master Servicer shall not take, or permit any Servicer  (consistent with the
applicable  Servicing  Agreement)  to take,  any  action  that  would  result in
noncoverage under any applicable  Primary Mortgage  Insurance Policy of any loss
which, but for the actions of such Master Servicer or Servicer,  would have been
covered thereunder. The Master Servicer shall use its best reasonable efforts to
keep in force and effect,  or to cause each Servicer to keep in force and effect
(to the extent that the Mortgage  Loan  requires the  Mortgagor to maintain such
insurance),  primary  mortgage  insurance  applicable  to each  Mortgage Loan in
accordance  with the  provisions  of this  Agreement  and the related  Servicing
Agreement,  as applicable.  The Master  Servicer shall not, and shall not permit
any Servicer to, cancel or refuse to renew any such Primary  Mortgage  Insurance
Policy that is in effect at the date of the initial issuance of the Certificates
and is  required to be kept in force  hereunder  except in  accordance  with the
provisions of this Agreement and the related Servicing Agreement, as applicable.

     (b) The Master  Servicer  agrees to present,  or to cause each  Servicer to
present,  on behalf of the  Trustee  and the  Certificateholders,  claims to the
insurer under any Primary Mortgage  Insurance  Policies and, in this regard,  to
take such  reasonable  action as shall be necessary to permit recovery under any
Primary  Mortgage  Insurance  Policies  respecting   defaulted  Mortgage  Loans.
Pursuant to Section 4.01,  any amounts  collected by the Master  Servicer or any
Servicer under any Primary Mortgage Insurance Policies shall be deposited in the
Collection Account, subject to withdrawal pursuant to Section 4.02.

     Section 9.19.  Trustee To Retain Possession of Certain  Insurance  Policies
and  Documents.  The  Trustee  (or its  custodian,  if any,  as  directed by the
Trustee),  shall retain  possession  and custody of the originals of the Primary
Mortgage  Insurance  Policies or  certificate of insurance if applicable and any
certificates  of renewal as to the  foregoing as may be issued from time to time
as contemplated by this Agreement. Until all amounts distributable in respect of
the Certificates have been distributed in full and the Master Servicer otherwise
has  fulfilled  its  obligations  under  this  Agreement,  the  Trustee  (or its
custodian,  if any, as directed by the Trustee) shall also retain possession and
custody of each Mortgage  File in  accordance  with and subject to the terms and
conditions of this  Agreement.  The Master  Servicer shall  promptly  deliver or
cause to be delivered to the Trustee (or its  custodian,  if any, as directed by
the Trustee), upon the execution or receipt thereof the originals of the Primary
Mortgage  Insurance  Policies and any certificates of renewal thereof,  and such
other  documents or instruments  that  constitute  portions of the Mortgage File
that come into the possession of the Master Servicer from time to time.

     Section 9.20.  Realization  Upon Defaulted  Mortgage Loans.  Subject to the
provisions of the Special Servicing Agreement, the Master Servicer shall use its
reasonable best efforts to, or to cause the Special Servicer to, foreclose upon,
repossess or otherwise  comparably convert the ownership of Mortgaged Properties
securing such of the Mortgage  Loans as come into and continue in default and as
to which no satisfactory  arrangements  can be made for collection of delinquent
payments, all in accordance with the applicable Servicing Agreement.

     Section 9.21.  Compensation  to the Master  Servicer.  The Master  Servicer
shall (i) be  entitled,  at its  election,  either  (a) to pay itself the Master
Servicing  Fee, as reduced  pursuant to Section 5.05, in respect of the Mortgage
Loans out of any Mortgagor  payment on account of interest  prior to the deposit
of such payment in the  Collection  Account it maintains or (b) to withdraw from
the Collection Account, subject to Section 5.05, the Master Servicing Fee to the
extent  permitted  by  Section  4.02(iv).  The  Master  Servicer  shall  also be
entitled, at its election,  either (a) to pay itself the Master Servicing Fee in
respect  of  each  delinquent  Mortgage  Loan  master  serviced  by  it  out  of
Liquidation  Proceeds in respect of such Mortgage Loan or other  recoveries with
respect thereto to the extent  permitted in Section 4.02 or (b) to withdraw from
the Collection  Account it maintains the Master Servicing Fee in respect of each
Liquidated  Mortgage  Loan to the extent of such  Liquidation  Proceeds or other
recoveries,  to the extent permitted by Section 4.02. Servicing  compensation in
the form of assumption fees, if any, late payment charges, as collected, if any,
or otherwise  (but not including  any  prepayment  premium or penalty)  shall be
retained by the Master  Servicer (or the  applicable  Servicer) and shall not be
deposited in the Collection  Account.  If the Master Servicer does not retain or
withdraw  the Master  Servicing  Fee from the  Collection  Account  as  provided
herein,  the Master  Servicer shall be entitled to direct the Trustee to pay the
Master  Servicing Fee to such Master Servicer by withdrawal from the Certificate
Account to the extent  that  payments  have been  received  with  respect to the
applicable  Mortgage  Loan.  The Master  Servicer  shall be  required to pay all
expenses  incurred by it in connection  with its activities  hereunder and shall
not be entitled to reimbursement  therefor except as provided in this Agreement.
Pursuant to Section 4.01(e), all income and gain realized from any investment of
funds in the Collection  Account shall be for the benefit of the Master Servicer
as additional  compensation.  The provisions of this Section 9.21 are subject to
the provisions of Section 6.14(b).

     Section  9.22.  REO  Property.  (a) In the event the  Trust  Fund  acquires
ownership  of any REO  Property  in respect of any  Mortgage  Loan,  the deed or
certificate of sale shall be issued to the Trustee, or to its nominee, on behalf
of the  Certificateholders.  Subject to the provisions of the Special  Servicing
Agreement,  the Master  Servicer shall use its reasonable  best efforts to sell,
or, to the extent  provided in the  applicable  Servicing  Agreement,  cause the
Special  Servicer to sell, any REO Property as  expeditiously as possible and in
accordance  with the  provisions  of this  Agreement  and the related  Servicing
Agreement, as applicable,  but in all events within the time period, and subject
to the conditions set forth in Article X hereof. Pursuant to its efforts to sell
such REO Property,  the Master Servicer shall protect and conserve, or cause the
Special Servicer to protect and conserve, such REO Property in the manner and to
such extent required by the applicable Servicing Agreement, subject to Article X
hereof.

     (b) The Master  Servicer  shall  deposit or cause to be deposited all funds
collected and received in  connection  with the operation of any REO Property in
the Collection Account it maintains.

     (c) The  Master  Servicer  and the  applicable  Servicer,  upon  the  final
disposition  of any REO  Property,  shall be entitled to  reimbursement  for any
related  unreimbursed  Advances and other  unreimbursed  advances as well as any
unpaid  Master  Servicing  Fees or  Servicing  Fees  from  Liquidation  Proceeds
received  in  connection  with  the  final  disposition  of such  REO  Property;
provided,  that any such  unreimbursed  Advances  as well as any  unpaid  Master
Servicing  Fees or Servicing Fees may be reimbursed or paid, as the case may be,
prior to final  disposition,  out of any net rental  income or other net amounts
derived from such REO  Property.

     (d)  The  Liquidation  Proceeds  from  the  final  disposition  of the  REO
Property,  net of any payment to the Master Servicer and the applicable Servicer
as provided above and in the Special Servicing Agreement,  shall be deposited in
the  Collection  Account  on or prior  to the  Determination  Date in the  month
following  receipt thereof (and the Master Servicer shall provide prompt written
notice to the Trustee  upon such  deposit)  and be remitted by wire  transfer in
immediately  available  funds to the Trustee for  deposit  into the  Certificate
Account on the next succeeding  Deposit Date. 

     Section 9.23.  Preparation of Tax Returns and Other Reports. (a) The Master
Servicer  shall  prepare or cause to be  prepared  on behalf of the Trust  Fund,
based upon information  calculated in accordance with this Agreement pursuant to
instructions  given by the  Depositor,  and the Trustee shall file,  federal tax
returns and  appropriate  state income tax returns and such other returns as may
be required by applicable  law relating to the Trust Fund, and the Trustee shall
forward  copies to the  Depositor of all such returns and Form 1099  information
and such other  information  within the control of the Trustee as the  Depositor
may reasonably request in writing,  and shall forward to each  Certificateholder
such forms and furnish such information within the control of the Trustee as are
required by the Code and the REMIC  Provisions to be furnished to them, and will
prepare and file annual reports required by applicable state  authorities,  will
file copies of this Agreement with the appropriate  state  authorities as may be
required   by   applicable   law,   and  will   prepare   and   disseminate   to
Certificateholders  Form  1099 (or  otherwise  furnish  information  within  the
control of the  Trustee) to the extent  required by  applicable  law. The Master
Servicer will  indemnify the Trustee for any liability of or assessment  against
the Trustee  resulting from any error in any of such tax or information  returns
resulting from errors in the information provided by such Master Servicer (other
than any such information that is derived solely from information  provided by a
Servicer).

     (b) The Master  Servicer  shall prepare and file with the Internal  Revenue
Service  ("IRS"),  on behalf of the Trust Fund, an application on IRS Form SS-4.
The  Master  Servicer,  upon  receipt  from the IRS of the  Notice  of  Taxpayer
Identification Number Assigned,  shall promptly forward a copy of such notice to
the Trustee and the Depositor.

     (c) The Depositor shall prepare or cause to be prepared the initial current
report on Form 8-K and thereafter  the Master  Servicer will prepare or cause to
be prepared Form 10-Ks and Form 10-Qs (if necessary), or monthly current reports
on Form 8-K, on behalf of the Trust Fund, as may be required by applicable  law,
for filing with the Securities and Exchange  Commission (the "SEC"). The Trustee
will sign each such report on behalf of the Trust Fund. The Master Servicer will
forward a copy of each such report to the Depositor  promptly  after such report
has been filed with the SEC. The Master  Servicer agrees to use its best efforts
to seek to terminate  such filing  obligation  promptly  after the period during
which such  filings are  required  under the  Securities  Exchange  Act of 1934.
Promptly  after  filing  a Form 15 or  other  applicable  form  with  the SEC in
connection  with such  termination,  the Master  Servicer  shall  deliver to the
Depositor a copy of such form together with copies of  confirmations  of receipt
by the SEC of each report filed  therewith on behalf of the Trust Fund.

     Section 9.24. Reports to the Trustee. (a) Not later than 30 days after each
Distribution Date, the Master Servicer shall forward to the Trustee a statement,
deemed to have been certified by a Servicing  Officer,  setting forth the status
of the Collection  Account  maintained by the Master Servicer as of the close of
business on the related  Distribution  Date,  indicating that all  distributions
required by this Agreement to be made by the Master  Servicer 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  of  deposits  into  and  withdrawals  from the
Collection Account  maintained by the Master Servicer.  Copies of such statement
shall be provided by the Master Servicer to the Depositor,  Attention:  Contract
Finance, and, upon request, to any  Certificateholders (or by the Trustee at the
Master  Servicer's  expense if the Master  Servicer  shall fail to provide  such
copies to the  Certificateholders  (unless  (i) the Master  Servicer  shall have
failed to provide the Trustee with such  statement or (ii) the Trustee  shall be
unaware of the Master Servicer's failure to provide such statement)).

     (b) Not later than two Business Days following each Distribution  Date, the
Master  Servicer shall deliver to the Person  designated by the Depositor,  in a
format  consistent with other  electronic  loan level reporting  supplied by the
Master   Servicer  in  connection  with  similar   transactions,   "loan  level"
information  with respect to the Mortgage Loans as of the related  Determination
Date,  to the  extent  that such  information  has been  provided  to the Master
Servicer by the Servicers or by the Depositor.

     Section 9.25.  Annual  Officer's  Certificiate  as to  Compliance.  (a) The
Master  Servicer  shall  deliver to the  Trustee  and the Rating  Agencies on or
before  May  31  of  each  year,  commencing  on  May  31,  1998,  an  Officer's
Certificate,   certifying  that  with  respect  to  the  period  ending  on  the
immediately  preceding  December 31: (i) such Servicing Officer has reviewed the
activities of such Master Servicer during the preceding calendar year or portion
thereof  and its  performance  under  this  Agreement,  (ii) to the best of such
Servicing  Officer's  knowledge,  based on such review, such 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 Servicing  Officer and the nature and
status  thereof,  (iii)  nothing  has come to the  attention  of such  Servicing
Officer to lead such  Servicing  Officer to believe that any Servicer has failed
to  perform  any of its  duties,  responsibilities  and  obligations  under  its
Servicing  Agreement in all material respects throughout such year, or, if there
has been a  material  default  in the  performance  or  fulfillment  of any such
duties,  responsibilities or obligations,  specifying each such default known to
such Servicing  Officer and the nature and status  thereof,  and (iv) the Master
Servicer has received from each Servicer such Servicer's  annual  certificate of
compliance and a copy of such  Servicer's  annual audit report,  in each case to
the extent required under the applicable  Servicing  Agreement,  or, if any such
certificate or report has not been received by the Master  Servicer,  the Master
Servicer  is using its best  reasonable  efforts to obtain such  certificate  or
report .

     (b) Copies of such  statements  shall be provided to any  Certificateholder
upon request,  by the Master Servicer or by the Trustee at the Master Servicer's
expense if the Master  Servicer  failed to provide  such copies  (unless (i) the
Master  Servicer shall have failed to provide the Trustee with such statement or
(ii) the Trustee  shall be unaware of the Master  Servicer's  failure to provide
such statement).

     Section 9.26.  Annual  Independent  Accountants'  Servicing  Report. If the
Master Servicer has, during the course of any fiscal year, directly serviced any
of the Mortgage  Loans,  then the Master  Servicer at its expense  shall cause a
nationally  recognized  firm of  independent  certified  public  accountants  to
furnish a statement to the Trustee,  the Rating Agencies and the Depositor on or
before May 31 of each year,  commencing on May 31, 1999 to the effect that, with
respect to the most recently ended fiscal year,  such firm has examined  certain
records and  documents  relating  to the Master  Servicer's  performance  of its
servicing  obligations  under this Agreement and pooling and servicing and trust
agreements in material  respects similar to this Agreement and to each other and
that, on the basis of such  examination  conducted  substantially  in compliance
with the audit  program for mortgages  serviced for FHLMC or the Uniform  Single
Attestation  Program for Mortgage Bankers,  such firm is of the opinion that the
Master  Servicer's  activities  have  been  conducted  in  compliance  with this
Agreement,  or  that  such  examination  has  disclosed  no  material  items  of
noncompliance  except  for (i)  such  exceptions  as such  firm  believes  to be
immaterial,  (ii) such other  exceptions as are set forth in such  statement and
(iii) such exceptions that the Uniform Single  Attestation  Program for Mortgage
Bankers or the Audit  Program for  Mortgages  Serviced  by FHLMC  requires it to
report.  Copies of such  statements  shall be provided to any  Certificateholder
upon  request by the Master  Servicer,  or by the  Trustee at the expense of the
Master  Servicer if the Master  Servicer  shall fail to provide such copies.  If
such report  discloses  exceptions that are material,  the Master Servicer shall
advise the Trustee whether such exceptions have been or are susceptible of cure,
and will take prompt action to do so.

     Section  9.27.  Merger or  Consolidation.  Any Person into which the Master
Servicer may be merged or consolidated, or any Person resulting from any merger,
conversion,  other change in form or  consolidation to which the Master Servicer
shall be a  party,  or any  Person  succeeding  to the  business  of the  Master
Servicer,  shall be the successor to the 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 the successor or resulting Person to the Master Servicer shall be
a Person that shall be qualified and approved to service mortgage loans for FNMA
or FHLMC and shall have a net worth of not less than $15,000,000.

     Section 9.28. Resignation of Master Servicer.  Except as otherwise provided
in Sections 9.27 and 9.29 hereof,  the Master Servicer shall not resign from the
obligations and duties hereby imposed on it unless it or the Trustee  determines
that the Master  Servicer's  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 and cannot be cured.  Any such  determination
permitting  the  resignation  of the Master  Servicer  shall be  evidenced by an
Opinion of Counsel  that shall be  Independent  to such effect  delivered to the
Trustee. No such resignation shall become effective until the Trustee shall have
assumed, or a successor master servicer shall have been appointed by the Trustee
and  until  such   successor   shall  have   assumed,   the  Master   Servicer's
responsibilities   and  obligations   under  this  Agreement.   Notice  of  such
resignation shall be given promptly by the Master Servicer to the Depositor.

     Section 9.29.  Assignment  or  Delegation of Dutes by the Master  Servicer.
Except as expressly  provided  herein,  the Master  Servicer shall not assign or
transfer  any of its  rights,  benefits  or  privileges  hereunder  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 hereunder; provided, however, that the Master Servicer shall
have the right without the prior written  consent of the Trustee,  the Depositor
or the Rating Agencies to delegate or assign to or subcontract with or 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   hereunder.   In  no  case,   however,   shall  any  such  delegation,
subcontracting  or assignment to an Affiliate of the Master Servicer relieve the
Master Servicer of any liability hereunder.  Notice of such permitted assignment
shall be given promptly by the Master Servicer to the Depositor and the Trustee.
If,  pursuant to any  provision  hereof,  the duties of the Master  Servicer are
transferred  to a successor  master  servicer,  the entire  amount of the Master
Servicing Fees and other  compensation  payable to the Master Servicer  pursuant
hereto, including amounts payable to or permitted to be retained or withdrawn by
the Master Servicer pursuant to Section 9.21 hereof, shall thereafter be payable
to such successor master servicer.

     Section 9.30.  Limitation  on Liability of the Master  Servicer and Others.
Neither the Master  Servicer nor any of the  directors,  officers,  employees or
agents of the Master Servicer shall be under any liability to the Trustee or the
Certificateholders 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 the Master Servicer or
any such person against any liability that would  otherwise be imposed by reason
of willful misfeasance, bad faith or negligence in its performance of its duties
or by reason of reckless  disregard  for its  obligations  and duties under this
Agreement. The Master Servicer and any director,  officer,  employee or agent of
the Master  Servicer  may rely in good faith on any  document  of any kind prima
facie  properly  executed  and  submitted by any Person  respecting  any matters
arising  hereunder.  The Master  Servicer shall be under no obligation to appear
in, prosecute or defend any legal action that is not incidental to its duties to
master service the Mortgage Loans in accordance  with this Agreement and that in
its opinion may involve it in any expenses or liability; provided, however, that
the Master Servicer may in its sole discretion undertake any such action that it
may deem  necessary or desirable in respect to this Agreement and the rights and
duties  of the  parties  hereto  and  the  interests  of the  Certificateholders
hereunder.  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 Fund and the Master  Servicer shall be entitled to be reimbursed  therefor
out of the Collection Account it maintains as provided by Section 4.02.

     The Master  Servicer  shall not be liable for any acts or  omissions of any
Servicer.  In  particular,  the  Master  Servicer  shall not be  liable  for any
servicing errors or interruptions  resulting from any failure of any Servicer to
maintain computer and other information systems that are year-2000 compliant.

     Section 9.31.  Indemnification;  Third-Party  Claims.  The Master  Servicer
agrees to  indemnify  the  Depositor  and the  Trustee,  and hold them  harmless
against any and all claims, losses, penalties,  fines,  forfeitures,  legal fees
and related costs, judgments, and any other costs, liability,  fees and expenses
that the Depositor and the Trustee may sustain as a result of the failure of the
Master  Servicer to perform its duties and master  service the Mortgage Loans in
compliance with the terms of this Agreement. The Depositor and the Trustee shall
immediately  notify the Master Servicer if a claim is made by a third party with
respect to this Agreement or the Mortgage  Loans  entitling the Depositor or the
Trustee to indemnification hereunder, whereupon the Master Servicer shall assume
the  defense of any such claim and pay all  expenses  in  connection  therewith,
including counsel fees, and promptly pay,  discharge and satisfy any judgment or
decree which may be entered against it or them in respect of such claim.

     Section  9.32.  Alternative  Index.  In the  event  that the  Index for any
Mortgage Loan, as specified in the related  Mortgage Note,  becomes  unavailable
for any reason,  the Master Servicer shall select an alternative index, which in
all cases  shall be an index  that  constitutes  a  qualified  rate on a regular
interest  under  the  REMIC  Provisions,  in  accordance  with the terms of such
Mortgage  Note  or,  if such  Mortgage  Note  does not  make  provision  for the
selection of an  alternative  index in such event,  the Master  Servicer  shall,
subject to applicable  law,  select an  alternative  index based on  information
comparable  to that used in  connection  with the original  Index and, in either
case,  such  alternative  index shall  thereafter be the Index for such Mortgage
Loan.

                                   ARTICLE X.

                              REMIC ADMINISTRATION

     Section 10.01 REMIC Administration. (a) REMIC elections as set forth in the
Preliminary  Statement  shall  be made by the  Trustee  on  Forms  1066 or other
appropriate federal tax or information return for the taxable year ending on the
last day of the calendar year in which the Certificates are issued.  The regular
interests  and  residual  interest in each REMIC shall be as  designated  in the
Preliminary Statement.

          (b) The Closing Date is hereby designated as the "Startup Day" of each
REMIC within the meaning of section 86OG(a)(9) of the Code.

          (c) The Master  Servicer  shall pay any and all tax  related  expenses
(not  including  taxes)  of  each  REMIC,  including  but  not  limited  to  any
professional  fees or  expenses  related  to  audits  or any  administrative  or
judicial  proceedings  with  respect  to such REMIC that  involve  the  Internal
Revenue Service or state tax  authorities,  but only to the extent that (i) such
expenses are ordinary or routine expenses, including expenses of a routine audit
but not  expenses of  litigation  (except as  described  in (ii));  or (ii) such
expenses or liabilities  (including taxes and penalties) are attributable to the
negligence or willful misconduct of the Master Servicer in fulfilling its duties
hereunder  (including its duties as tax return  preparer).  The Master  Servicer
shall be entitled to  reimbursement of expenses to the extent provided in clause
(i) above from the Collection  Account.

          (d) The Master Servicer shall prepare,  and the Trustee shall sign and
file, all of each REMIC's federal and state tax and information  returns as such
REMIC's direct representative. The expenses of preparing and filing such returns
shall be borne by the Master Servicer.  

          (e) The  Master  Servicer  shall act as Tax  Matters  Person  for each
REMIC. The Master Servicer or its designee shall perform on behalf of each REMIC
all reporting and other tax  compliance  duties that are the  responsibility  of
such REMIC under the Code, the REMIC  Provisions,  or other compliance  guidance
issued by the Internal  Revenue Service or any state or local taxing  authority.
Among its other duties, if required by the Code, the REMIC Provisions,  or other
such  guidance,  the Master  Servicer shall provide (i) to the Treasury or other
governmental  authority such  information as is necessary for the application of
any tax relating to the transfer of a Residual  Certificate to any  disqualified
person or organization  and (ii) to the  Certificateholders  such information or
reports as are required by the Code or REMIC Provisions.

          (f) The Trustee,  the Master  Servicer and the Holders of Certificates
shall take any action or cause the REMIC to take any action  necessary to create
or maintain the status of such REMIC as a REMIC under the REMIC  Provisions  and
shall assist each other as necessary to create or maintain such status.  Neither
the Trustee,  the Master  Servicer  nor the Holder of any  Residual  Certificate
shall  take any  action,  cause the REMIC to take any action or fail to take (or
fail to cause to be taken) any action that, under the REMIC Provisions, if taken
or not taken, as the case may be, could (i) endanger the status of such REMIC as
a REMIC or (ii) result in the imposition of a tax upon such REMIC (including but
not limited to the tax on  prohibited  transactions  as defined in Code  Section
860F(a)(2) and the tax on prohibited  contributions set forth on Section 860G(d)
of the Code) (either such event,  an "Adverse  REMIC Event")  unless the Trustee
and the Master  Servicer  have received an Opinion of Counsel (at the expense of
the party  seeking  to take such  action) to the  effect  that the  contemplated
action will not endanger such status or result in the  imposition of such a tax.
In addition,  prior to taking any action with respect to the REMIC or the assets
therein,  or  causing  such  REMIC to take any  action,  which is not  expressly
permitted  under  the  terms  of  this  Agreement,  any  Holder  of  a  Residual
Certificate  will  consult  with the Trustee and the Master  Servicer,  or their
respective  designees,  in writing,  with  respect to whether  such action could
cause an Adverse  REMIC Event to occur with  respect to such REMIC,  and no such
Person shall take any such action or cause such REMIC to take any such action as
to which the Trustee or the Master  Servicer  has advised it in writing  that an
Adverse REMIC Event could occur.

          (g) Each Holder of a Residual  Certificate  shall pay when due any and
all  taxes  imposed  on the  related  REMIC by  federal  or  state  governmental
authorities.  To the  extent  that such  Trust  taxes are not paid by a Residual
Certificateholder,  the  Trustee  shall  pay any  remaining  REMIC  taxes out of
current or future amounts otherwise  distributable to the Holder of the Residual
Certificate  in such REMIC or, if no such  amounts are  available,  out of other
amounts  held in the  Collection  Account,  and shall reduce  amounts  otherwise
payable to holders of regular  interests in such REMIC,  as the case may be.

          (h) The Master  Servicer  shall,  for  federal  income  tax  purposes,
maintain  books and records with respect to each REMIC on a calendar year and on
an accrual basis.

          (i) No additional  contributions of assets shall be made to any REMIC,
     except as  expressly  provided in this  Agreement  with respect to eligible
     substitute mortgage loans.

     (i)  Neither  the  Trustee  nor the Master  Servicer  shall  enter into any
arrangement  by which any REMIC  will  receive a fee or other  compensation  for
services.

          (j) On or before April 15 of each calendar year beginning in 1999, the
Master Servicer shall deliver to the Trustee and each Rating Agency an Officer's
Certificate stating the Master Servicer's compliance with the provisions of this
Section 10.01.

          (k) The Trustee  shall treat the Basis Risk Reserve Fund as an outside
reserve fund within the meaning of Treasury  Regulation Section 1.860G-2(h) that
is owned by the Class X Certificateholder and that is not an asset of the REMIC.
The Trustee shall treat the rights of the Class A-1, Class A-2, Class M-1, Class
M-2,  and Class B  Certificateholders  to receive  payments  from the Basis Risk
Reserve  Fund in the event of a Basis Risk  Shortfall  as rights in an  interest
rate cap contract written by the Class X Certificateholder in favor of the Class
A-1, Class A-2, Class M-1, Class M-2, and Class B Certificateholders. Thus, each
Class A-1,  Class A-2,  Class M-1,  Class M-2, and Class B Certificate  shall be
treated as representing not only ownership of regular  interests in REMIC 4, but
also ownership of an interest in an interest rate cap contract.  For purposes of
determining the issue prices of the REMIC 4 regular interests, the Trustee shall
assume that the interest  rate cap  contract  has a value of $1,000.

     Section  10.02.   Prohibited   Transaxtion  and  Activities.   Neither  the
Depositor,  the Master  Servicer  nor the  Trustee  shall  sell,  dispose of, or
substitute for any of the Mortgage  Loans,  except in a disposition  pursuant to
(i) the  foreclosure of a Mortgage Loan,  (ii) the bankruptcy of the Trust Fund,
(iii) the  termination of each REMIC pursuant to Article VII of this  Agreement,
(iv) a substitution pursuant to Article II of this Agreement or (v) a repurchase
of  Mortgage  Loans  pursuant to Article II of this  Agreement,  nor acquire any
assets for any REMIC,  nor sell or dispose of any investments in the Certificate
Account for gain,  nor accept any  contributions  to the REMIC after the Closing
Date,  unless it has received an Opinion of Counsel (at the expense of the party
causing  such  sale,  disposition,   or  substitution)  that  such  disposition,
acquisition,  substitution,  or  acceptance  will not (a) affect  adversely  the
status  of such  REMIC as a REMIC or of the  interests  therein  other  than the
Residual   Certificates  as  the  regular  interests  therein,  (b)  affect  the
distribution  of interest or  principal on the  Certificates,  (c) result in the
encumbrance  of the assets  transferred  or assigned  to the Trust Fund  (except
pursuant  to the  provisions  of this  Agreement)  or (d) cause such REMIC to be
subject to a tax on prohibited transactions or prohibited contributions pursuant
to the REMIC Provisions.

     Section  10.03.  Indemnification  with Respect to Certain Taxes and Loss of
REMIC Status. (a) In the event that any REMIC fails to qualify as a REMIC, loses
its status as a REMIC, or incurs federal,  state or local taxes as a result of a
prohibited transaction or prohibited contribution under the REMIC Provisions due
to  the  negligent  performance  by  the  Master  Servicer  of  its  duties  and
obligations set forth herein,  the Master Servicer shall indemnify the Holder of
the related Residual  Certificate against any and all losses,  claims,  damages,
liabilities or expenses  ("Losses")  resulting from such  negligence;  provided,
however,  that the  Master  Servicer  shall  not be liable  for any such  Losses
attributable to the action or inaction of the Trustee, the Depositor,  the Class
X Certificateholder or the Holder of such Residual  Certificate,  as applicable,
nor for any such Losses resulting from misinformation  provided by the Holder of
such Residual Certificate on which the Master Servicer has relied. The foregoing
shall not be deemed to limit or restrict  the rights and  remedies of the Holder
of such  Residual  Certificate  now or  hereafter  existing at law or in equity.
Notwithstanding  the foregoing,  however,  in no event shall the Master Servicer
have any  liability  (1) for any action or omission  that is taken in accordance
with and in  compliance  with  the  express  terms  of,  or  which is  expressly
permitted by the terms of, this Agreement, (2) for any Losses other than arising
out of a  negligent  performance  by the  Master  Servicer  of  its  duties  and
obligations set forth herein,  and (3) for any special or consequential  damages
to  Certificateholders  (in addition to payment of principal and interest on the
Certificates).

          (b) If the Internal Revenue Service  determines that one of the REMICs
established hereunder recognized income from a prohibited transaction within the
meaning of Section  860F(a)(2) of the Code as a result of the lapse of the Class
X Certificateholder's right to effect a Special Termination of the Trust Fund by
purchasing the assets of the Trust Fund, then Lehman Capital shall indemnify the
Trust Fund for any such tax.

     Section 10.04 REO Property. (a) Notwithstanding any other provision of this
Agreement, the Master Servicer, acting on behalf of the Trustee hereunder, shall
not, and shall,  to the extent provided in the applicable  Servicing  Agreement,
not permit any Servicer to, rent,  lease,  or otherwise earn income on behalf of
any REMIC with respect to any REO  Property  which might cause such REO Property
to fail to  qualify as  "foreclosure"  property  within  the  meaning of section
860G(a)(8) of the Code or result in the receipt by any REMIC of any "income from
non-permitted  assets"  within the meaning of section  860F(a)(2) of the Code or
any "net income  from  foreclosure  property"  which is subject to tax under the
REMIC  Provisions  unless the Master  Servicer  has  advised,  or has caused the
applicable  Servicer to advise, the Trustee in writing to the effect that, under
the REMIC  Provisions,  such action would not adversely affect the status of the
REMIC as a REMIC and any income  generated  for such  REMIC by the REO  Property
would not result in the imposition of a tax upon such REMIC.

          (b) The  Master  Servicer  shall  make,  or shall  cause  the  Special
Servicer  to make,  reasonable  efforts  to sell any REO  Property  for its fair
market value. In any event,  however,  the Master Servicer shall, or shall cause
the Special  Servicer to, dispose of any REO Property  within three years of its
acquisition  by the Trust  Fund  unless  the  Trustee  has  received  a grant of
extension from the Internal  Revenue Service to the effect that, under the REMIC
Provisions and any relevant proposed legislation and under applicable state law,
the REMIC may hold REO Property for a longer period without adversely  affecting
the REMIC status of such REMIC or causing the  imposition  of a Federal or state
tax upon such REMIC.  If the Trustee has received  such an  extension,  then the
Trustee, or the Master Servicer, acting on its behalf hereunder, shall, or shall
cause the Special  Servicer to, continue to attempt to sell the REO Property for
its fair market value for such period longer than three years as such  extension
permits  (the  "Extended  Period").  If the  Trustee  has not  received  such an
extension  and the  Trustee,  or the  Master  Servicer  acting  on behalf of the
Trustee  hereunder,  or the Special  Servicer is unable to sell the REO Property
within 33 months after its  acquisition  by the Trust Fund or if the Trustee has
received such an extension,  and the Trustee,  or the Master  Servicer acting on
behalf of the Trustee  hereunder,  is unable to sell the REO Property within the
period ending three months before the close of the Extended  Period,  the Master
Servicer  shall,  or shall cause the Special  Servicer to, before the end of the
three year period or the Extended Period,  as applicable,  (i) purchase such REO
Property  at a price  equal  to the REO  Property's  fair  market  value or (ii)
auction the REO Property to the highest bidder (which may be the Master Servicer
or the Special  Servicer)  in an auction  reasonably  designed to produce a fair
price prior to the expiration of the three-year  period or the Extended  Period,
as the case may be.

                                   ARTICLE XI

                            MISCELLANEOUS PROVISIONS

     Section  11.01.  Binding  Nature of Agreement;  Assignment.  This Agreement
shall be binding  upon and inure to the benefit of the parties  hereto and their
respective successors and permitted assigns.

     Section  11.02.  Entire  Agreement.  This  Agreement  contains  the  entire
agreement and understanding among the parties hereto with respect to the subject
matter  hereof,  and  supersedes  all  prior  and  contemporaneous   agreements,
understandings, inducements and conditions, express or implied, oral or written,
of any nature whatsoever with respect to the subject matter hereof.  The express
terms hereof control and supersede any course of performance and/or usage of the
trade inconsistent with any of the terms hereof.

     Section  11.03.  Amendment.  (a) This Agreement may be amended from time to
time by the Depositor, the Master Servicer and the Trustee, without notice to or
the consent of any of the Holders, (i) to cure any ambiguity,  (ii) to cause the
provisions  herein to conform to or be consistent  with or in furtherance of the
statements  made  with  respect  to the  Certificates,  the  Trust  Fund or this
Agreement in any Offering  Document,  or to correct or supplement  any provision
herein which may be inconsistent with any other provisions herein, (iii) to make
any other  provisions  with respect to matters or questions  arising  under this
Agreement  or (iv)  to add,  delete,  or  amend  any  provisions  to the  extent
necessary or desirable to comply with any  requirements  imposed by the Code and
the REMIC  Provisions.  No such  amendment  effected  pursuant to the  preceding
sentence  shall,  as  evidenced by an Opinion of Counsel,  adversely  affect the
status of any REMIC created pursuant to this Agreement, nor shall such amendment
effected  pursuant  to clause  (iii) of such  sentence  adversely  affect in any
material  respect  the  interests  of any  Holder.  Prior to  entering  into any
amendment without the consent of Holders pursuant to this paragraph, the Trustee
may require an Opinion of Counsel (at the expense of the party  requesting  such
amendment) to the effect that such amendment is permitted  under this paragraph.
Any such  amendment  shall be deemed  not to  adversely  affect in any  material
respect  any Holder,  if the Trustee  receives  written  confirmation  from each
Rating  Agency that such  amendment  will not cause such Rating Agency to reduce
the then current rating assigned to the Certificates (and any Opinion of Counsel
requested  by the  Trustee  in  connection  with  any  such  amendment  may rely
expressly on such confirmation as the basis therefor).

          (b)  his  Agreement  may  also  be  amended  from  time to time by the
Depositor,  the Master  Servicer and the Trustee with the consent of the Holders
of not  less  than  66-2/3%  of  the  Class  Certificate  Principal  Amount  (or
Percentage  Interest)  of each Class 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 of modifying in any manner the rights of
the Holders; provided,  however, that no such amendment shall be made unless the
Trustee  receives an Opinion of Counsel,  at the expense of the party requesting
the change,  that such change will not adversely  affect the status of any REMIC
as a REMIC or cause a tax to be imposed on such  REMIC;  and  provided  further,
that no such  amendment may (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  or (ii)  reduce  the  aforesaid  percentages  of Class  Certificate
Principal  Amount (or Percentage  Interest) of Certificates  of each Class,  the
Holders  of which are  required  to consent to any such  amendment  without  the
consent of the  Holders of 100% of the Class  Certificate  Principal  Amount (or
Percentage  Interest)  of each  Class  of  Certificates  affected  thereby.  For
purposes of this paragraph,  references to "Holder" or "Holders" shall be deemed
to include,  in the case of any Class of  Book-Entry  Certificates,  the related
Certificate Owners.

          (c) Promptly after the execution of any such amendment,  the Trustee
shall furnish written  notification of the substance of such amendment to each
Holder, the Depositor and to the Rating Agencies.

          (d) It shall not be necessary  for the consent of Holders under this
Section 11.03 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 Holders shall be subject to such reasonable  regulations
as the Trustee may prescribe.  

          (e)  Notwithstanding  anything  to the  contrary  in  any  Servicing
Agreement,  the Trustee  shall not consent to any  amendment of any  Servicing
Agreement  except  pursuant to the  standards  provided in this  Section  with
respect to amendment of this  Agreement.

     Section 11.04.  Voting  Rights.  Except to the extent that the consent of
all affected  Certificateholders is required pursuant to this Agreement,  with
respect  to  any  provision  of  this  Agreement   requiring  the  consent  of
Certificateholders representing specified percentages of aggregate outstanding
Certificate Principal Amount (or Percentage  Interest),  Certificates owned by
the Depositor,  the Master Servicer, the Trustee or any Servicer or Affiliates
thereof  are not to be counted so long as such  Certificates  are owned by the
Depositor,  the Master Servicer,  the Trustee or any Servicer or any Affiliate
thereof.

     Section 11.05.  Provision of  Information.  (a) For so long as any of the
Certificates  of any Series or Class are  "restricted  securities"  within the
meaning of Rule 144(a)(3) under the Act, each of the Depositor and the Trustee
agree to cooperate with each other to provide to any Certificateholders and to
any    prospective    purchaser   of    Certificates    designated   by   such
Certificateholder,  upon the request of such  Certificateholder or prospective
purchaser,  any  information  required  to  be  provided  to  such  holder  or
prospective  purchaser to satisfy the condition  set forth in Rule  144A(d)(4)
under the Act. Any reasonable,  out-of-pocket expenses incurred by the Trustee
in providing such information shall be reimbursed by the Depositor.

          (b) The Trustee will provide to any person to whom a Prospectus  was
delivered,  upon  the  request  of such  person  specifying  the  document  or
documents requested, (i) a copy (excluding exhibits) of any report on Form 8-K
or Form 10-K filed with the  Securities  and Exchange  Commission  pursuant to
Section  9.23(c)  and  (ii)  a copy  of any  other  document  incorporated  by
reference in the Prospectus. Any reasonable out-of-pocket expenses incurred by
the Trustee in providing  copies of such documents  shall be reimbursed by the
Depositor.

          (c) On each Distribution Date, the Trustee shall deliver or cause to
be  delivered  by  first  class  mail to the  Depositor,  Attention:  Contract
Finance,  a copy of the report  delivered  to  Certificateholders  pursuant to
Section 4.03. 

     Section  11.06.  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 WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES APPLIED IN NEW YORK.

     Section 11.07. Notices. All demands, notices and communications hereunder
shall be in writing and shall be deemed to have been duly given when  received
by (a) in the case of the Depositor,  Structured Asset Securities Corporation,
200 Vesey Street, 12th Floor, New York, New York 10285, Attention:  Mark Zusy,
(b) in the case of the Trustee,  First Union  National  Bank,  230 South Tryon
Street NC1179, Charlotte, North Carolina 28288, Attention: Structured Finance,
and (c) in the case of the Master Servicer,  Norwest Bank Minnesota,  National
Association,  11000 Broken Land Parkway, Columbia,  Maryland 21044; Attention:
Master  Servicing,  or as to each party such other address as may hereafter be
furnished by such party to the other parties in writing.  Any notice  required
or  permitted  to be mailed to a Holder  shall be given by first  class  mail,
postage  prepaid,  at the address of such  Holder as shown in the  Certificate
Register.  Any notice so mailed within the time  prescribed in this  Agreement
shall be  conclusively  presumed to have been duly  given,  whether or not the
Holder receives such notice.

     Section 11.08.  Serverability  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 11.09. Indulgences; No Waivers. Neither the failure nor any delay
on the part of a party to exercise any right, remedy, power or privilege under
this  Agreement  shall  operate as a waiver  thereof,  nor shall any single or
partial exercise of any right,  remedy,  power or privilege preclude any other
or  further  exercise  of the same or of any  other  right,  remedy,  power or
privilege,  nor shall any waiver of any right, remedy, power or privilege with
respect to any  occurrence  be  construed  as a waiver of such right,  remedy,
power or privilege  with respect to any other  occurrence.  No waiver shall be
effective  unless it is in writing and is signed by the party asserted to have
granted such waiver.

     Section  11.10.  Headings  Not To  Affect  Interpretation.  The  headings
contained in this Agreement are for  convenience  of reference  only, and they
shall not be used in the interpretation hereof.

     Section 11.11. 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 and the Holders of
the Certificates,  any benefit or any legal or equitable right,  power, remedy
or claim  under  this  Agreement,  except to the extent  specified  in Section
11.14.

     Section 11.12. Special Notices to the Rating Agencies.  (a) The Depositor
shall give prompt  notice to the Rating  Agencies of the  occurrence of any of
the following events of which it has notice:

               (i) any amendment to this Agreement pursuant to Section 11.03;

          (i) any Assignment by the Master Servicer of its rights hereunder or
delegation of its duties hereunder;

          (ii) the  occurrence  of any Event of Default  described  in Section
6.14;

         (iii) any   notice  of  termination  given  to the  Master  Servicer
pursuant to Section 6.14 and any resignation of the Master Servicer hereunder;


               (v) the  appointment  of any  successor to any Master  Servicer
          pursuant to Section 6.14; and

         (iv)  the making of a final payment pursuant to Section 7.02.

          (v)  any termination  of the rights and  obligations of any Servicer
under the  applicable  Servicing  Agreement.

          (b) All notices to the Rating  Agencies  provided  for this  Section
shall be in  writing  and sent by first  class  mail,  telecopy  or  overnight
courier, as follows:

         Standard & Poor's Rating Services
         26 Broadway, 15th Floor
         New York, New York  10004
         Attention: Residential Mortgages

          (c)  The  Trustee  shall  deliver  to the  Rating  Agencies  reports
prepared pursuant to Section 4.03.

     Section  11.13.  Counterparts.  This  Agreement may be executed in one or
more counterparts, each of which shall be deemed to be an original, and all of
which together shall constitute one and the same instrument.

     Section 11.14. Transfer of Servicing. Lehman Capital agrees that it shall
provide  written  notice to the  Trustee and the Master  Servicer  thirty days
prior to any transfer or assignment by Lehman  Capital of its rights under any
Servicing Agreement or of the servicing thereunder or delegation of its rights
or duties  thereunder  or any  portion  thereof to any  Person  other than the
initial Servicer under such Servicing Agreement.  In addition,  the ability of
Lehman  Capital to transfer or assign its rights and delegate its duties under
any Servicing Agreement or to transfer the servicing thereunder to a successor
servicer shall be subject to the following conditions:

               (i) Such successor  servicer must be qualified to service loans
          for FNMA or FHLMC;

               (i) Such  successor  servicer must satisfy the  seller/servicer
eligibility standards in the applicable Servicing Agreement,  exclusive of any
experience in mortgage loan origination,  and must be reasonably acceptable to
the Master Servicer, whose approval shall not be unreasonably withheld;

               (ii) Such  successor  servicer  must execute and deliver to the
Trustee and the Master Servicer an agreement, in form and substance reasonably
satisfactory  to the  Trustee  and  the  Master  Servicer,  that  contains  an
assumption by such successor servicer of the due and punctual  performance and
observance  of each covenant and condition to be performed and observed by the
Servicer  under  the  applicable  Servicing  Agreement;

               (iii) There must be delivered to the Trustee a letter from each
Rating Agency to the effect that such transfer of servicing will not result in
a qualification,  withdrawal or downgrade of the then-current rating of any of
the  Certificates;

               (v) Lehman  Capital shall,  at its cost and expense,  take such
          steps,  or cause the terminated  Servicer to take such steps, as may
          be necessary or  appropriate to effectuate and evidence the transfer
          of the servicing of the Mortgage Loans to such  successor  servicer,
          including,  but not  limited  to, the  following:  (A) to the extent
          required  by the  terms  of the  Mortgage  Loans  and by  applicable
          federal and state laws and  regulations,  Lehman Capital shall cause
          the prior  Servicer to timely mail to each obligor  under a Mortgage
          Loan any required notices or disclosures  describing the transfer of
          servicing of the Mortgage Loans to the successor servicer; (B) prior
          to the effective date of such transfer of servicing,  Lehman Capital
          shall cause the prior  Servicer  to transmit to any related  insurer
          notification  of such transfer of servicing;  (C) on or prior to the
          effective  date of such transfer of servicing,  Lehman Capital shall
          cause the prior  Servicer to deliver to the  successor  servicer all
          Mortgage Loan Documents and any related records or materials; (D) on
          or prior to the effective date of such transfer of servicing, Lehman
          Capital shall cause the prior  Servicer to transfer to the successor
          servicer,  or, if such transfer  occurs after a Remittance  Date but
          before the next succeeding Deposit Date, to the Master Servicer, all
          funds held by the Servicer in respect of the Mortgage Loans;  (E) on
          or prior to the effective date of such transfer of servicing, Lehman
          Capital shall cause the prior  Servicer to, after the effective date
          of the transfer of servicing to the successor servicer,  continue to
          forward  to such  successor  servicer,  within one  Business  Day of
          receipt,  the amount of any payments or other recoveries received by
          the prior  Servicer,  and to notify the  successor  servicer  of the
          source and proper application of each such payment or recovery;  and
          (F) Lehman  Capital  shall cause the prior  Servicer  to,  after the
          effective  date of transfer of servicing to the successor  servicer,
          continue to cooperate with the successor servicer to facilitate such
          transfer in such manner and to such extent as the successor servicer
          may reasonably request.


         IN WITNESS WHEREOF, the Depositor,  the Trustee and the Master Servicer
have  caused  their  names to be  signed  hereto  by their  respective  officers
hereunto duly authorized as of the day and year first above written.

                                        STRUCTURED ASSET SECURITIES
                                         CORPORATION, as Depositor


                                        By:
                                           ____________________________
                                           Name: Stanley P. Labanowski
                                           Title:  Authorized Signatory


                                        FIRST UNION NATIONAL BANK,
                                        as Trustee


                                         By:
                                            _____________________________  
                                            Name:
                                            Title:


                                         NORWEST BANK MINNESOTA, NATIONAL
                                         ASSOCIATION, as Master Servicer


                                         By:
                                            _____________________________  
                                            Name:
                                            Title:



Solely for purposes of Section 11.14,
accepted and agreed to by:

LEHMAN CAPITAL, A DIVISION OF
LEHMAN BROTHERS HOLDINGS INC.


By:___________________________________
   Name: Joseph J. Kelly
   Title:  Authorized Signatory

                                    EXHIBIT A
                                    ---------

                              FORMS OF CERTIFICATES



                                   EXHIBIT B-1
                                   -----------

                          FORM OF INITIAL CERTIFICATION


                                                                   _____________
                                                                        Date


Structured Asset Securities Corporation
200 Vesey Street
New York, New York 10285


          Re: Trust Agreement (the "Trust Agreement"), dated as of April 1, 1998
          among  Structured Asset Securities  Corporation,  as Depositor,  First
          Union National Bank, as Trustee, and Norwest Bank Minnesota,  National
          Association,  as Master  Servicer,  with respect to  Structured  Asset
          Securities  Corporation  Mortgage  Pass-Through  Certificates,  Series
          1998-4


Ladies and Gentlemen:

     In  accordance  with  Section  2.02(a) of the Trust  Agreement,  subject to
review of the contents thereof,  the undersigned,  as Trustee,  hereby certifies
that it (or its custodian) has received the documents  listed in Section 2.01(b)
of the Trust  Agreement for each Mortgage File  pertaining to each Mortgage Loan
listed on Schedule A, to the Trust Agreement, subject to any exceptions noted on
Schedule I hereto.

     Capitalized  words and phrases used herein and not otherwise defined herein
shall have the respective meanings assigned to them in the Trust Agreement. This
Certificate is subject in all respects to the terms of Section 2.02 of the Trust
Agreement and the Trust Agreement sections cross-referenced therein.


                                                    [[Custodian], on behalf of]
                                                    FIRST UNION NATIONAL BANK,
                                                    as Trustee


                                                    By:_________________________
                                                       Name:
                                                       Title:

                                   EXHIBIT B-2
                                   -----------

                          FORM OF INTERIM CERTIFICATION


                                                                   _____________
                                                                        Date

Structured Asset Securities Corporation
200 Vesey Street
New York, New York 10285

          Re: Trust Agreement (the "Trust Agreement"), dated as of April 1, 1998
          among  Structured Asset Securities  Corporation,  as Depositor,  First
          Union National Bank, as Trustee, and Norwest Bank Minnesota,  National
          Association,  as Master  Servicer,  with respect to  Structured  Asset
          Securities  Corporation  Mortgage  Pass-Through  Certificates,  Series
          1998-4

Ladies and Gentlemen:

     In accordance with Section 2.02(b) of the Trust Agreement, the undersigned,
as  Trustee,  hereby  certifies  that as to each  Mortgage  Loan  listed  in the
Mortgage Loan  Schedule  (other than any Mortgage Loan paid in full or listed on
Schedule I hereto) it (or its custodian)  has received the applicable  documents
listed in Section 2.01(b) of the Trust Agreement.

     The undersigned  hereby  certifies that as to each Mortgage Loan identified
on the Mortgage Loan Schedule, other than any Mortgage Loan listed on Schedule I
hereto,  it has reviewed the documents  identified above and has determined that
each such  document  appears  regular  on its face and  appears to relate to the
Mortgage Loan identified in such document.

     Capitalized  words  and  phrases  used  herein  shall  have the  respective
meanings assigned to them in the Trust Agreement.  This Certificate is qualified
in all respects by the terms of said Trust Agreement including,  but not limited
to, Section 2.02(b).


                                                    [[Custodian], on behalf of]
                                                    FIRST UNION NATIONAL BANK,
                                                    as Trustee


                                                    By:_________________________
                                                       Name:
                                                       Title:


                                   EXHIBIT B-3
                                   -----------

                           FORM OF FINAL CERTIFICATION

                                                                   _____________
                                                                        Date

Structured Asset Securities Corporation
200 Vesey Street
New York, New York 10285

          Re: Trust Agreement (the "Trust Agreement"), dated as of April 1, 1998
          among  Structured Asset Securities  Corporation,  as Depositor,  First
          Union National Bank, as Trustee, and Norwest Bank Minnesota,  National
          Association,  as Master  Servicer,  with respect to  Structured  Asset
          Securities  Corporation  Mortgage  Pass-Through  Certificates,  Series
          1998-4

Ladies and Gentlemen:

     In accordance with Section 2.02(d) of the Trust Agreement, the undersigned,
as  Trustee,  hereby  certifies  that as to each  Mortgage  Loan  listed  in the
Mortgage Loan  Schedule  (other than any Mortgage Loan paid in full or listed on
Schedule I hereto) it (or its custodian)  has received the applicable  documents
listed in Section 2.01(b) of the Trust Agreement.

     The undersigned  hereby  certifies that as to each Mortgage Loan identified
on the Mortgage Loan Schedule, other than any Mortgage Loan listed on Schedule I
hereto,  it has reviewed the documents listed above and has determined that each
such  document  appears to be  complete  and,  based on an  examination  of such
documents, the information set forth in the Mortgage Loan Schedule is correct.

     Capitalized  words  and  phrases  used  herein  shall  have the  respective
meanings assigned to them in the Trust Agreement.  This Certificate is qualified
in all respects by the terms of said Trust Agreement.

                                           [[Custodian], on behalf of]
                                           FIRST UNION NATIONAL BANK,
                                           as Trustee


                                            By:________________________________
                                               Name:
                                               Title:


                                   EXHIBIT B-4
                                   -----------

                               FORM OF ENDORSEMENT

     Pay to the order of First Union National  Bank, as trustee (the  "Trustee")
under the Trust  Agreement  dated as of April 1, 1998,  among  Structured  Asset
Securities  Corporation,  as  Depositor,  the  Trustee  and the Master  Servicer
relating  to  Structured  Asset  Securities  Corporation  Mortgage  Pass-Through
Certificates, Series 1998-4, without recourse.




                                                    ----------------------------
                                                    [current signatory on note]


                                                    By:_________________________
                                                       Name:
                                                       Title:

                                    EXHIBIT C
                                    ---------

                  REQUEST FOR RELEASE OF DOCUMENTS AND RECEIPT


                                                                   _____________
                                                                        Date

[Addressed to Trustee
or, if applicable, custodian]


     In  connection  with the  administration  of the  mortgages  held by you as
Trustee  under a  certain  Trust  Agreement  dated  as of April  1,  1998  among
Structured Asset Securities Corporation,  as Depositor,  Norwest Bank Minnesota,
National  Association,  as Master  Servicer,  and you,  as Trustee  (the  "Trust
Agreement"),  the  undersigned  Master Servicer hereby requests a release of the
Mortgage  File held by you as Trustee  with respect to the  following  described
Mortgage Loan for the reason indicated below.

     Mortgagor's Name:

     Address:

     Loan No.:

     Reason for requesting file:

     1. Mortgage Loan paid in full. (The Master  Servicer hereby  certifies that
all amounts  received in connection  with the loan have been or will be credited
to the Collection  Account or the Certificate  Account (whichever is applicable)
pursuant to the Trust Agreement.)

     2. The Mortgage Loan is being foreclosed.

     3. Mortgage Loan substituted.  (The Master Servicer hereby certifies that a
Qualifying Substitute Mortgage Loan has been assigned and delivered to you along
with the related Mortgage File pursuant to the Trust Agreement.)

     4. Mortgage Loan purchased.  (The Master Servicer hereby certifies that the
Purchase  Price has been credited to the Collection  Account or the  Certificate
Account (whichever is applicable) pursuant to the Trust Agreement.)

     5. Other. (Describe)

     The undersigned  acknowledges  that the above Mortgage File will be held by
the  undersigned in accordance  with the  provisions of the Trust  Agreement and
will be  returned  to you  within ten (10) days of our  receipt of the  Mortgage
File,  except if the  Mortgage  Loan has been paid in full,  or  repurchased  or
substituted  for a  Qualifying  Substitute  Mortgage  Loan  (in  which  case the
Mortgage  File will be retained by us  permanently)  and except if the  Mortgage
Loan is being  foreclosed (in which case the Mortgage File will be returned when
no longer required by us for such purpose).

     Capitalized  terms used herein shall have the meanings  ascribed to them in
the Trust Agreement.


                                                    ----------------------------
                                                    [Name of Master Servicer]


                                                    By:_________________________
                                                       Name:
                                                       Title: Servicing Officer



                                   EXHIBIT D-1
                                   -----------

          FORM OF RESIDUAL CERTIFICATE TRANSFER AFFIDAVIT (TRANSFEREE)



STATE OF         )
                 ) ss.:
COUNTY OF        )

     [NAME OF OFFICER],  _________________  being first duly sworn,  deposes and
says:

     1. That he [she] 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 [she] 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")  and  will  not be a  "disqualified  organization"  as of [date of
transfer],  and that the Purchaser is not acquiring a Residual  Certificate  (as
defined in the Agreement)  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 federal income tax unless such  organization is subject
to the tax on unrelated business income imposed by Code Section 511.

     4. That the Purchaser is not, and on __________ [insert date of transfer of
Residual Certificate to Purchaser] will not be, and is not and on such date will
not be investing the assets of, an employee benefit plan subject to the Employee
Retirement Income Security Act of 1974, as amended ("ERISA"),  or a plan subject
to Code  Section  4975 or a person  or entity  that is using  the  assets of any
employee benefit plan or other plan to acquire a Residual Certificate.

     5. That the Purchaser hereby acknowledges that under the terms of the Trust
Agreement (the "Agreement") among Structured Asset Securities Corporation, First
Union   National  Bank,  as  Trustee  and  Norwest  Bank   Minnesota,   National
Association,  as Master Servicer,  dated as of April 1, 1998, no transfer of the
Residual  Certificates  shall be permitted  to be made to any person  unless the
Trustee has received a certificate  from such transferee to the effect that such
transferee is not an employee benefit plan subject to ERISA or a plan subject to
Section  4975 of the Code and is not using the  assets of any  employee  benefit
plan or other plan to acquire Residual Certificates.

     6. That the Purchaser does not hold REMIC residual securities as nominee to
facilitate the clearance and settlement of such  securities  through  electronic
book-entry  changes in accounts of participating  organizations  (such entity, a
"Book-Entry Nominee").

     7. That the  Purchaser  does not have the  intention to impede the
assessment or collection of any federal,  state or local taxes legally  required
to be paid with respect to such Residual Certificate.

     8. That the  Purchaser  will not  transfer  a Residual  Certificate  to any
person or entity (i) as to which the  Purchaser  has actual  knowledge  that the
requirements  set forth in paragraph  3,  paragraph 6 or paragraph 10 hereof are
not  satisfied or that the  Purchaser has reason to believe does not satisfy the
requirements  set forth in paragraph 7 hereof,  and (ii) without  obtaining from
the prospective Purchaser an affidavit  substantially in this form and providing
to the Trustee a written statement substantially in the form of Exhibit G to the
Agreement.

     9.  That the  Purchaser  understands  that,  as the  holder  of a  Residual
Certificate, the Purchaser may incur tax liabilities in excess of any cash flows
generated  by the  interest  and that it  intends to pay taxes  associated  with
holding such Residual Certificate as they become due.

     10. That the Purchaser  (i) is not a Non-U.S.  Person or (ii) is a Non-U.S.
Person that holds a Residual  Certificate  in  connection  with the conduct of a
trade or business  within the United States and has furnished the transferor and
the Trustee 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 Trustee an opinion of a
nationally  recognized  tax  counsel to the  effect  that the  transfer  of such
Residual  Certificate to it is in accordance  with the  requirements of the Code
and the regulations  promulgated thereunder and that such transfer of a Residual
Certificate  will not be disregarded for federal income tax purposes.  "Non-U.S.
Person" means an individual, corporation, partnership or other person other than
a citizen or resident of the United States, a corporation,  partnership or other
entity  created or  organized  in or under the laws of the United  States or any
political  subdivision  thereof,  or an estate or trust  that is subject to U.S.
federal income tax regardless of the source of its income.

     11. That the Purchaser  agrees to such amendments of the Trust Agreement as
may be  required  to further  effectuate  the  restrictions  on  transfer of any
Residual Certificate to such a "disqualified  organization," an agent thereof, a
Book-Entry  Nominee,  or a person  that does not  satisfy  the  requirements  of
paragraph 7 and paragraph 10 hereof.

     12. That the Purchaser  consents to the  designation of the Master Servicer
as its agent to act as "tax  matters  person" of the Trust Fund  pursuant to the
Trust Agreement.

     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:
                                                       Title:


     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__.


                                   EXHIBIT D-2
                                   -----------

              RESIDUAL CERTIFICATE TRANSFER AFFIDAVIT (TRANSFEROR)

                                                                   _____________
                                                                        Date


                  Re:      Structured Asset Securities Corporation
                           Mortgage Pass-Through Certificates
                           ----------------------------------



     _______________________   (the  "Transferor")  has  reviewed  the  attached
affidavit of _____________________________ (the "Transferee"), and has no actual
knowledge  that such affidavit is not true and has no reason to believe that the
information  contained in paragraph 7 thereof is not true,  and has no reason to
believe  that the  Transferee  has the  intention  to impede the  assessment  or
collection of any federal, state or local taxes legally required to be paid with
respect to a Residual Certificate.  In addition,  the Transferor has conducted a
reasonable  investigation  at the  time  of the  transfer  and  found  that  the
Transferee  had  historically  paid  its  debts as they  came  due and  found no
significant  evidence to indicate that the  Transferee  will not continue to pay
its debts as they become due.


                                                    Very truly yours,


                                                    ----------------------------
                                                    Name:
                                                    Title:


                                    EXHIBIT E
                                    ---------

                              SERVICING AGREEMENTS



                                    EXHIBIT F
                                    ---------

                     FORM OF RULE 144A TRANSFER CERTIFICATE


         Re:      Structured Asset Securities Corporation
                  Mortgage Pass-Through Certificates
                  Series 1998-4
                  -------------

     Reference is hereby made to the Trust  Agreement  dated as of April 1, 1998
(the "Trust  Agreement")  among  Structured  Asset  Securities  Corporation,  as
Depositor, Norwest Bank Minnesota,  National Association, as Master Servicer and
First Union  National Bank, as Trustee.  Capitalized  terms used but not defined
herein shall have the meanings given to them in the Trust Agreement.

     This letter  relates to  $_________  initial  Certificate  Balance of Class
_______  Certificates  which  are  held in the form of  Definitive  Certificates
registered in the name of __________________________________ (the "Transferor").
The  Transferor  has requested a transfer of such  Definitive  Certificates  for
Definitive  Certificates of such Class registered in the name of [insert name of
transferee].

     In connection with such request,  and in respect of such Certificates,  the
Transferor  hereby  certifies that such  Certificates  are being  transferred in
accordance with (i) the transfer  restrictions  set forth in the Trust Agreement
and the  Certificates and (ii) Rule 144A under the Securities Act to a purchaser
that the Transferor  reasonably  believes is a "qualified  institutional  buyer"
within  the  meaning  of Rule 144A  purchasing  for its own  account  or for the
account of a "qualified  institutional buyer," which purchaser is aware that the
sale to it is being made in reliance upon Rule 144A,  in a  transaction  meeting
the  requirements of Rule 144A and in accordance with any applicable  securities
laws of any state of the United States or any other applicable jurisdiction.

     This  certificate  and the  statements  contained  herein are made for your
benefit and the benefit of the Placement Agent and the Depositor.

                                           -------------------------------------
                                           [Name of Transferor]

                                           By:__________________________________
                                              Name:
                                              Title:

Dated: ___________, ____


                                    EXHIBIT G
                                    ---------


                         FORM OF PURCHASER'S LETTER FOR
                        INSTITUTIONAL ACCREDITED INVESTOR


                                                                   _____________
                                                                        Date

Dear Sirs:


     In  connection  with our  proposed  purchase of  $______________  principal
amount of Mortgage  Pass-Through  Certificates,  Series  1998-4 (the  "Privately
Offered   Certificates")   of  Structured  Asset  Securities   Corporation  (the
"Depositor"), we confirm that:

(1)       We understand that the Privately  Offered  Certificates have not been,
          and will not be,  registered  under  the  Securities  Act of 1933,  as
          amended  (the  "Securities  Act"),  and  may  not be  sold  except  as
          permitted in the following  sentence.  We agree, on our own behalf and
          on  behalf of any  accounts  for  which we are  acting as  hereinafter
          stated,  that if we should  sell any  Privately  Offered  Certificates
          within  three years of the later of the date of  original  issuance of
          the  Privately  Offered  Certificates  or the last  day on which  such
          Privately  Offered  Certificates  are  owned by the  Depositor  or any
          affiliate of the Depositor  (which  includes the  Placement  Agent) we
          will do so only (A) to the Depositor,  (B) to "qualified institutional
          buyers"  (within the meaning of Rule 144A under the Securities Act) in
          accordance  with Rule 144A  under the  Securities  Act  ("QIBs"),  (C)
          pursuant to the exemption from registration provided by Rule 144 under
          the Securities Act, or (D) to an institutional  "accredited  investor"
          within the meaning of Rule 501(a)(1),  (2), (3) or (7) of Regulation D
          under  the  Securities  Act  that  is  not  a QIB  (an  "Institutional
          Accredited  Investor") which, prior to such transfer,  delivers to the
          Trustee under the Trust  Agreement dated as of April 1, 1998 among the
          Depositor,  Norwest Bank Minnesota,  National  Association,  as Master
          Servicer and First Union National Bank, as Trustee (the "Trustee"),  a
          signed letter in the form of this letter; and we further agree, in the
          capacities  stated above,  to provide to any person  purchasing any of
          the  Privately  Offered  Certificates  from us a notice  advising such
          purchaser  that  resales of the  Privately  Offered  Certificates  are
          restricted as stated herein.

(2)      We  understand  that,  in  connection  with any proposed  resale of any
         Privately Offered Certificates to an Institutional Accredited Investor,
         we will be  required  to furnish to the  Trustee  and the  Depositor  a
         certification  from such  transferee in the form hereof to confirm that
         the proposed sale is being made pursuant to an exemption  from, or in a
         transaction  not  subject  to,  the  registration  requirements  of the
         Securities  Act.  We  further  understand  that the  Privately  Offered
         Certificates  purchased  by us  will  bear a  legend  to the  foregoing
         effect.

(3)      We are acquiring  the Privately  Offered  Certificates  for  investment
         purposes  and not with a view to,  or for  offer or sale in  connection
         with, any distribution in violation of the Securities Act. We have such
         knowledge and  experience  in financial  and business  matters as to be
         capable of  evaluating  the merits and risks of our  investment  in the
         Privately Offered Certificates, and we and any account for which we are
         acting are each able to bear the economic risk of such investment.

(4)      We are an  Institutional  Accredited  Investor and we are acquiring the
         Privately Offered  Certificates  purchased by us for our own account or
         for one or more accounts (each of which is an Institutional  Accredited
         Investor) as to each of which we exercise sole investment discretion.

(5)       We have received  such  information  as we deem  necessary in order to
          make our investment decision.

     Terms used in this letter which are not otherwise  defined  herein have the
respective meanings assigned thereto in the Trust Agreement.

     You and the  Depositor  are  entitled  to rely  upon  this  letter  and are
irrevocably authorized to produce this letter or a copy hereof to any interested
party in any administrative or legal proceeding or official inquiry with respect
to the matters covered hereby.

                                                    Very truly yours,


                                                    ----------------------------
                                                             [Purchaser]


                                                    By__________________________
                                                      Name:
                                                      Title:


                                    EXHIBIT H
                                    ---------

                       [FORM OF ERISA TRANSFER AFFIDAVIT]

STATE OF NEW YORK          )
                           ) ss.:
COUNTY OF NEW YORK         )

     The undersigned, being first duly sworn, deposes and says as follows:

     1.  _______  The   undersigned  is  the   ______________________   of  (the
"Investor"),  a  [corporation  duly  organized]  and existing  under the laws of
__________, on behalf of which he makes this affidavit.

     2. The  Investor  either (x) is not an  employee  benefit  plan  subject to
Section 406 or Section 407 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"),  the Trustee of any such plan or a person acting
on behalf of any such plan nor a person using the assets of any such plan or (2)
if the  Investor is an  insurance  company,  such  Investor is  purchasing  such
Certificates with funds contained in an "Insurance  Company General Account" (as
such  term is  defined  in  Section  v(e) of the  Prohibited  Transaction  Class
Exemption  95-60  ("PTCE  95-60"))  and that the  purchase  and  holding of such
Certificates  are covered under PTCE 95-60;  or (y) shall deliver to the Trustee
and the Depositor an opinion of counsel (a "Benefit Plan Opinion")  satisfactory
to the Trustee and the  Depositor,  and upon which the Trustee and the Depositor
shall be  entitled to rely,  to the effect that the  purchase or holding of such
Certificate  by the  Investor  will not  result in the  assets of the Trust Fund
being  deemed  to be plan  assets  and  subject  to the  prohibited  transaction
provisions  of  ERISA  or the Code and  will  not  subject  the  Trustee  or the
Depositor to any obligation in addition to those  undertaken by such entities in
the Trust  Agreement,  which  opinion of counsel  shall not be an expense of the
Trustee or the Depositor.

     3. The  Investor  hereby  acknowledges  that  under  the terms of the Trust
Agreement (the "Agreement")  among Structured Asset Securities  Corporation,  as
Depositor, Norwest Bank Minnesota, National Association, as Master Servicer, and
First Union National Bank, as Trustee, dated as of April 1, 1998, no transfer of
the  ERISA-Restricted  Certificates  shall be permitted to be made to any person
unless  the  Depositor  and  Trustee  have  received  a  certificate  from  such
transferee in the form hereof.

     IN WITNESS WHEREOF,  the Investor has caused this instrument to be executed
on its behalf,  pursuant to proper  authority,  by its duly authorized  officer,
duly attested, this ____ day of _______________, 199 .


                                                    ----------------------------
                                                              [Investor]


                                                    By:_________________________
                                                       Name:
                                                       Title:

EXHIBIT I
- ---------

                            MONTHLY REMITTANCE ADVICE


EXHIBIT J
- ---------

                      MONTHLY ELECTRONIC DATA TRANSMISSION


EXHIBIT K
- ---------

                               CUSTODIAL AGREEMENT


EXHIBIT L
- ---------

                    SPECIAL SERVICING COMPENSATION AGREEMENT


                                   SCHEDULE A
                                   ----------

                             MORTGAGE LOAN SCHEDULE



         LEHMAN CAPITAL, A DIVISION OF LEHMAN BROTHERS HOLDINGS INC.,

                                    SELLER

                                      and

                   STRUCTURED ASSET SECURITIES CORPORATION,

                                   PURCHASER

                  MORTGAGE LOAN SALE AND ASSIGNMENT AGREEMENT

                           Dated as of April 1, 1998

                               TABLE OF CONTENTS

Section                                                            Page

                                   ARTICLE I

                         CONVEYANCE OF MORTGAGE LOANS

1.01.  Sale of Mortgage Loans.....................................  2
1.02.  Delivery of Documents......................................  3
1.03.  Review of Documentation....................................  3
1.04.  Representations and Warranties of Lehman Capital...........  3
1.05.  Grant Clause...............................................  7
1.06.  Assignment by Depositor....................................  7

                                  ARTICLE II

                           MISCELLANEOUS PROVISIONS

2.01.  Binding Nature of Agreement; Assignment....................  8
2.02.  Entire Agreement...........................................  8
2.03.  Amendment..................................................  8
2.04.  Governing Law..............................................  9
2.05.  Severability of Provisions.................................  9
2.06.  Indulgences; No Waivers....................................  9
2.07.  Headings Not to Affect Interpretation......................  9
2.08.  Benefits of Agreement......................................  9
2.09.  Counterparts...............................................  9


                                   SCHEDULES

SCHEDULE A        Mortgage Loan Schedule

     This MORTGAGE LOAN SALE AND ASSIGNMENT AGREEMENT is executed by and
between Lehman Capital, A Division of Lehman Brothers Holdings Inc. ("Lehman
Capital"), and Structured Asset Securities Corporation (the "Depositor"),
dated as of the 1st day of April, 1998.

     All capitalized terms not defined herein shall have the same meanings
assigned to such terms in that certain Trust Agreement (the "Trust
Agreement"), dated as of April 1, 1998, between the Depositor, Norwest Bank
Minnesota, N.A., as Master Servicer and First Union National Bank, as Trustee
(the "Trustee").

                                               W I T N E S S E T H:

     WHEREAS, pursuant to the following specified mortgage loan transfer
agreements (each a "Transfer Agreement", and together the "Transfer
Agreements"), Lehman Capital has purchased from certain transferors (each a
"Transferor", and together the "Transferors"), certain mortgage loans
identified on the Mortgage Loan Schedule attached hereto as Exhibit A:

          1. Seller's Warranties and Servicing Agreement, dated as of January
          23, 1998, between Lehman Capital and Option One Mortgage
          Corporation;

          2. Assignment, Assumption and Recognition Agreement, dated January
          29, 1998, among DLJ Mortgage Capital, Inc. ("DLJ"), Lehman Capital,
          BNC Mortgage, Inc. ("BNC") and Temple-Inland Mortgage Corporation
          pursuant to which DLJ transferred and assigned all of its right,
          title and interest in the Master Mortgage Loan Purchase Agreement,
          dated as of October 31, 1995, between DLJ, as purchaser, and BNC, as
          seller;

          3. Purchase and Warranties Agreement, dated as of October 1, 1997,
          between Lehman Capital and Long Beach Mortgage Company;

          4. Purchase and Warranties Agreement, dated as of December 1, 1997,
          between Lehman Capital and Long Beach Mortgage Company;

          5. Mortgage Loan Purchase and Warranties Agreement, date as of
          February 22, 1998, between Lehman Capital and Chase Manhattan
          Mortgage Corporation;

          6. Mortgage Loan Purchase and Warranties Agreement, dated as of
          February 1, 1998, between Lehman Capital and Pan American Bank, FSB;
          and

          7. Mortgage Loan Purchase and Warranties Agreement, dated as of
          February 1, 1998, between Lehman Capital and Life Bank.

     WHEREAS, each Transfer Agreement permits the purchaser to assign its
rights and interests in such agreement and to delegate its obligations
thereunder;

     WHEREAS, Lehman Capital desires to sell, without recourse, all of its
right, title and interest in the Mortgage Loans to the Depositor, to assign
all of its rights and interest under the Transfer Agreements, and to delegate
all of its obligations thereunder, to the Depositor; and

     WHEREAS, Lehman Capital and the Depositor acknowledge and agree that the
Depositor will assign all of its rights and delegate all of its obligations
hereunder to the Trustee, and that each reference herein to the Depositor is
intended, unless otherwise specified, to mean the Depositor or the Trustee, as
assignee, whichever is the owner of the Mortgage Loans from time to time.

     NOW, THEREFORE, in consideration of the mutual agreements herein set
forth, and for other good and valuable consideration, the receipt and adequacy
of which are hereby acknowledged, Lehman Capital and the Depositor agree as
follows:

                                  ARTICLE I.

                         CONVEYANCE OF MORTGAGE LOANS

     Section 1.01. Sales of Mortgage Loan. Concurrently with the execution and
delivery of this Agreement, Lehman Capital does hereby transfer, assign, set
over, deposit with and otherwise convey to the Depositor, without recourse,
all the right, title and interest of Lehman Capital in and to the Mortgage
Loans identified on Schedule A hereto, having an aggregate principal balance
as of the Cut-off Date of $759,131,604.23. Such conveyance includes, without
limitation, the right to all distributions of principal and interest received
on or with respect to the Mortgage Loans on or after April 1, 1998 (other than
payments of principal and interest due on or before such date), and all such
payments due after such date but received prior to such date and intended by
the related Mortgagors to be applied after such date, together with all of
Lehman Capital's right, title and interest in and to each related account and
all amounts from time to time credited to and the proceeds of such account,
any REO Property and the proceeds thereof, Lehman Capital's rights under any
Insurance Policies related to the Mortgage Loans, and Lehman Capital's
security interest in any collateral pledged to secure the Mortgage Loans,
including the Mortgaged Properties and any Additional Collateral.

     Concurrently with the execution and delivery of this Agreement, Lehman
Capital hereby assigns to the Depositor all of its rights and interest under
the Transfer Agreements, and delegates to the Depositor all of its obligations
thereunder. Concurrently with the execution hereof, the Depositor tenders the
purchase price of $804,010,843.22. The Depositor hereby accepts such
assignment and delegation, and shall be entitled to exercise all such rights
of Lehman Capital under the Transfer Agreements, as if the Depositor had been
a party to the Transfer Agreements.

     Section 1.02. Delivery of Documents. (a) In connection with such transfer
and assignment of the Mortgage Loans hereunder, Lehman Capital does hereby
deliver, or cause to be delivered, to the Depositor (or its designee) the
documents or instruments with respect to each Mortgage Loan (each a "Mortgage
File") so transferred and assigned, as specified in the Transfer Agreements.

          (b) For Mortgage Loans (if any) that have been prepaid in full after
the Cut-off Date and prior to the Closing Date, Lehman Capital, in lieu of
delivering the related Mortgage Files, herewith delivers to the Depositor an
Officer's Certificate which shall include a statement to the effect that all
amounts received in connection with such prepayment that are required to be
deposited in the account maintained by the Servicer for such purpose have been
so deposited.

     Section 1.03. Review of Documents. The Depositor, by execution and
delivery hereof, acknowledges receipt of the Mortgage Files pertaining to the
Mortgage Loans listed on the Mortgage Loan Schedule, subject to review thereof
by U.S. Bank Trust, National Association, Norwest Bank Minnesota, N.A. or
Chase Bank of Texas, N.A., as applicable, as custodian (each a "Custodian")
for the Depositor. Each Custodian is required to review, within 45 days
following the Closing Date, each applicable Mortgage File. If in the course of
such review a Custodian identifies any Material Defect, Lehman Capital shall
be obligated to cure such defect or to repurchase the related Mortgage Loan
from the Depositor (or, at the direction of and on behalf of the Depositor,
from the Trust Fund), or to substitute a Qualifying Substitute Mortgage Loan
therefor, in each case to the same extent and in the same manner as the
Depositor is obligated to the Trustee and the Trust Fund under Section 2.02(c)
of the Trust Agreement.

     Section 1.04 Representative and Warranties of Lehnan Capital. (a) Lehman
Capital hereby represents and warrants to the Depositor that as of the date
hereof that:

          (i) Lehman Capital is a corporation duly organized, validly existing
          and in good standing under the laws governing its creation and
          existence and has full corporate power and authority to own its
          property, to carry on its business as presently conducted, and to
          enter into and perform its obligations under this Agreement;

               (i) the execution and delivery by Lehman Capital of this
Agreement have been duly authorized by all necessary corporate action on the
part of Lehman Capital; neither the execution and delivery of this Agreement,
nor the consummation of the transactions herein contemplated, nor compliance
with the provisions hereof, will conflict with or result in a breach of, or
constitute a default under, any of the provisions of any law, governmental
rule, regulation, judgment, decree or order binding on Lehman Capital or its
properties or the certificate of incorporation or bylaws of Lehman Capital;

               (ii) the execution, delivery and performance by Lehman Capital
of this Agreement and the consummation of the transactions contemplated hereby
do not require the consent or approval of, the giving of notice to, the
registration with, or the taking of any other action in respect of, any state,
federal or other governmental authority or agency, except such as has been
obtained, given, effected or taken prior to the date hereof;

          (iii) this Agreement has been duly executed and delivered by Lehman
Capital and, assuming due authorization, execution and delivery by the
Depositor, constitutes a valid and binding obligation of Lehman Capital
enforceable against it in accordance with its terms except as such
enforceability may be subject to (A) applicable bankruptcy and insolvency laws
and other similar laws affecting the enforcement of the rights of creditors
generally and (B) general principles of equity regardless of whether such
enforcement is considered in a proceeding in equity or at law; and

          (v) there are no actions, suits or proceedings pending or, to the
          knowledge of Lehman Capital, threatened or likely to be asserted
          against or affecting Lehman Capital, before or by any court,
          administrative agency, arbitrator or governmental body (A) with
          respect to any of the transactions contemplated by this Agreement or
          (B) with respect to any other matter which in the judgment of Lehman
          Capital will be determined adversely to Lehman Capital and will if
          determined adversely to Lehman Capital materially and adversely
          affect it or its business, assets, operations or condition,
          financial or otherwise, or adversely affect its ability to perform
          its obligations under this Agreement.

               (b) The representations and warranties of each Transferor with
respect to the Mortgage Loans in the applicable Transfer Agreement were made
as of the date of such Transfer Agreement. To the extent that any fact,
condition or event with respect to a Mortgage Loan constitutes a breach of
both (i) a representation or warranty of a Transferor under the applicable
Transfer Agreement and (ii) a representation or warranty of Lehman Capital
under this Agreement, the only right or remedy of the Depositor shall be the
right to enforce the obligations of such Transferor under any applicable
representation or warranty made by it. The Depositor acknowledges and agrees
that the representations and warranties of Lehman Capital in this Section
1.04(b) are applicable only to facts, conditions or events that do not
constitute a breach of any representation or warranty made by the related
Transferor in the applicable Transfer Agreement. Lehman Capital shall have no
obligation or liability with respect to any breach of a representation or
warranty made by it with respect to the Mortgage Loans if the fact, condition
or event constituting such breach also constitutes a breach of a
representation or warranty made by the related Transferor in such Transfer
Agreement, without regard to whether the related Transferor fulfills its
contractual obligations in respect of such representation or warranty. Subject
to the foregoing, Lehman Capital represents and warrants upon delivery of the
Mortgage Loans to the Depositor hereunder, as to each, that:

          (i) The information set forth with respect to the Mortgage Loans on
          the Mortgage Loan Schedule provides an accurate listing of the
          Mortgage Loans, and the information with respect to each Mortgage
          Loan on the Mortgage Loan Schedule is true and correct in all
          material respects at the date or dates respecting which such
          information is given;

               (ii) There are no defaults in complying with the terms of any
Mortgage, and Lehman Capital has no notice as to any taxes, governmental
assessments, insurance premiums, water, sewer and municipal charges, leasehold
payments or ground rents which previously became due and owing but which have
not been paid;

               (iii) Except in the case of Cooperative Loans, each Mortgage
requires all buildings or other improvements on the related Mortgaged Property
to be insured by a generally acceptable insurer against loss by fire, hazards
of extended coverage and such other hazards as are customary in the area where
the related Mortgaged Property is located pursuant to insurance policies
conforming to the requirements of the guidelines of FNMA or FHLMC. If upon
origination of the Mortgage Loan, the Mortgaged Property was in an area
identified in the Federal Register by the Federal Emergency Management Agency
as having special flood hazards (and such flood insurance has been made
available) a flood insurance policy meeting the requirements of the current
guidelines of the Federal Flood Insurance Administration is in effect which
policy conforms to the requirements of the current guidelines of the Federal
Flood Insurance Administration. Each Mortgage obligates the related Mortgagor
thereunder to maintain the hazard insurance policy at the Mortgagor's cost and
expense, and on the Mortgagor's failure to do so, authorizes the holder of the
Mortgage to obtain and maintain such insurance at such Mortgagor's cost and
expense, and to seek reimbursement therefor from the Mortgagor. Where required
by state law or regulation, each Mortgagor has been given an opportunity to
choose the carrier of the required hazard insurance, provided the policy is
not a "master" or "blanket" hazard insurance policy covering the common
facilities of a planned unit development. The hazard insurance policy is the
valid and binding obligation of the insurer, is in full force and effect, and
will be in full force and effect and inure to the benefit of the Depositor
upon the consummation of the transactions contemplated by this Agreement.

               (iv) Each Mortgage has not been satisfied, cancelled,
subordinated or rescinded, in whole or in part, and the Mortgaged Property has
not been released from the lien of the Mortgage, in whole or in part, nor has
any instrument been executed that would effect any such release, cancellation,
subordination or recision;

          (v) Each Mortgage evidences a valid, subsisting, enforceable and
          perfected first lien on the related Mortgaged Property (including
          all improvements on the Mortgaged Property). The lien of the
          Mortgage is subject only to: (1) liens of current real property
          taxes and assessments not yet due and payable and, if the related
          Mortgaged Property is a condominium unit, any lien for common
          charges permitted by statute, (2) 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 related
          Mortgaged Property is located and specifically referred to in the
          lender's Title Insurance Policy or attorney's opinion of title and
          abstract of title delivered to the originator of such Mortgage Loan,
          and (3) 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. Any security agreement, chattel mortgage or
          equivalent document related to, and delivered to the Trustee in
          connection with, a Mortgage Loan establishes a valid, subsisting and
          enforceable first lien on the property described therein and the
          Depositor has full right to sell and assign the same to the Trustee;

               (v) Immediately prior to the transfer and assignment of the
Mortgage Loans to the Depositor, Lehman Capital was the sole owner of record
and holder of each Mortgage Loan, and Lehman Capital had good and marketable
title thereto, and has full right to transfer and sell each Mortgage Loan to
the Depositor free and clear, except as described in paragraph (v) above, of
any incumbrance, equity, participation interest, lien, pledge, charge, claim
or security interest, and has full right and authority, subject to no interest
or participation of, or agreement with, any other party, to sell and assign
each Mortgage Loan pursuant to this Agreement;

               (vi) Each Mortgage Loan other than any Cooperative Loan is
covered by either (i) an attorney's opinion of title and abstract of title the
form and substance of which is generally acceptable to mortgage lending
institutions originating mortgage loans in the locality where the related
Mortgaged Property is located or (ii) an ALTA mortgagee Title Insurance Policy
or other generally acceptable form of policy of insurance, issued by a title
insurer qualified to do business in the jurisdiction where the Mortgaged
Property is located, insuring the originator of the Mortgage Loan, and its
successors and assigns, as to the first priority lien of the Mortgage in the
original principal amount of the Mortgage Loan (subject only to the exceptions
described in paragraph (v) above. If the Mortgaged Property is a condominium
unit located in a state in which a title insurer will generally issue an
endorsement, then the related Title Insurance Policy contains an endorsement
insuring the validity of the creation of the condominium form of ownership
with respect to the project in which such unit is located. With respect to any
Title Insurance Policy, the originator is the sole insured of such mortgagee
Title Insurance Policy, such mortgagee Title Insurance Policy is in full force
and effect and will inure to the benefit of the Depositor upon the
consummation of the transactions contemplated by this Agreement, no claims
have been made under such mortgagee Title Insurance Policy and no prior holder
of the related Mortgage, including Lehman Capital, has done, by act or
omission, anything that would impair the coverage of such mortgagee Title
Insurance Policy;

               (vii) To the best of Lehman Capital's knowledge, no foreclosure
action is being threatened or commenced with respect to any Mortgage Loan.
There is no proceeding pending for the total or partial condemnation of any
Mortgaged Property (or, in the case of a Cooperative Loan, the related
cooperative unit) and each such property is undamaged by waste, fire,
earthquake or earth movement, windstorm, flood, tornado or other casualty, so
as to have a material adverse effect on the value of the related Mortgaged
Property as security for the related Mortgage Loan or the use for which the
premises were intended;

               (viii) There are no mechanics' or similar liens or claims which
have been filed for work, labor or material (and no rights are outstanding
that under the law could give rise to such liens) affecting the related
Mortgaged Property which are or may be liens prior to, or equal or coordinate
with, the lien of the related Mortgage;

          (x) Each Mortgage Loan was originated by a savings and loan
          association, savings bank, commercial bank, credit union, insurance
          company, or similar institution which is supervised and examined by
          a Federal or State authority, or by a mortgagee approved by the
          Secretary of Housing and Urban Development pursuant to sections 203
          and 211 of the National Housing Act; and

               (ix) Each Mortgage Loan is a "qualified mortgage" within the
meaning of Section 860G of the Code and Treas. Reg. Section 1.860G-2.

     It is understood and agreed that the representations and warranties set
forth herein survive delivery of the Mortgage Files and the Assignment of
Mortgage of each Mortgage Loan to the Depositor. Upon discovery by either
Lehman Capital or the Depositor of a breach of any of the foregoing
representations and warranties that adversely and materially affects the value
of the related Mortgage Loan, and that does not also constitute a breach of a
representation or warranty of the related Transferor in the applicable
Transfer Agreement, the party discovering such breach shall give prompt
written notice to the other party. Within 60 days of the discovery of any such
breach, Lehman Capital shall either (a) cure such breach in all material
respects, (b) repurchase such Mortgage Loan or any property acquired in
respect thereof from the Depositor at the applicable Purchase Price or (c)
within the two year period following the Closing Date, substitute a Qualifying
Substitute Mortgage Loan for the affected Mortgage Loan.

     Section 1.05. Grant Clause. It is intended that the conveyance of Lehman
Capital's right, title and interest in and to Mortgage Loans and other
property conveyed pursuant to this Agreement shall constitute, and shall be
construed as, a sale of such property and not a grant of a security interest
to secure a loan. However, if such conveyance is deemed to be in respect of a
loan, it is intended that: (1) the rights and obligations of the parties shall
be established pursuant to the terms of this Agreement; (2) Lehman Capital
hereby grants to the Depositor a first priority security interest in all of
Lehman Capital's right, title and interest in, to and under, whether now owned
or hereafter acquired, such Mortgage Loans and other property; and (3) this
Agreement shall constitute a security agreement under applicable law.

     Section 1.06.  Assignment by Depositor. The Depositor shall have the right,
upon notice to but without the consent of Lehman Capital, to assign, in whole
or in part, its interest under this Agreement with respect to the Mortgage
Loans to the Trustee, and the Trustee then shall succeed to all rights of the
Depositor under this Agreement. All references to the Depositor in this
Agreement shall be deemed to include its assignee or designee, specifically
including the Trustee.

                                 ARTICLE II.

                           MISCELLANEOUS PROVISIONS

     Section 2.01. Binding Natuare of Agreement; Assignment. This Agreement
shall be binding upon and inure to the benefit of the parties hereto and their
respective successors and permitted assigns.

     Section 2.02. Entire Agreement. This Agreement contains the entire
agreement and understanding among the parties hereto with respect to the
subject matter hereof, and supersedes all prior and contemporaneous
agreements, understandings, inducements and conditions, express or implied,
oral or written, of any nature whatsoever with respect to the subject matter
hereof. The express terms hereof control and supersede any course of
performance and/or usage of the trade inconsistent with any of the terms
hereof.

     Section 2.03. Amendment. (a) This Agreement may be amended from time to
time by Lehman Capital and the Depositor, without notice to or the consent of
any of the Holders, (i) to cure any ambiguity, (ii) to cause the provisions
herein to conform to or be consistent with or in furtherance of the statements
made with respect to the Certificates, the Trust Fund, the Trust Agreement or
this Agreement in any Offering Document; or to correct or supplement any
provision herein which may be inconsistent with any other provisions herein,
(iii) to make any other provisions with respect to matters or questions
arising under this Agreement or (iv) to add, delete, or amend any provisions
to the extent necessary or desirable to comply with any requirements imposed
by the Code and the REMIC Provisions. No such amendment effected pursuant to
clause (iii) of the preceding sentence shall adversely affect in any material
respect the interests of any Holder. Any such amendment shall be deemed not to
adversely affect in any material respect any Holder, if the Trustee receives
written confirmation from each Rating Agency that such amendment will not
cause such Rating Agency to reduce the then current rating assigned to the
Certificates (and any Opinion of Counsel requested by the Trustee in
connection with any such amendment may rely expressly on such confirmation as
the basis therefor).

          (b) This Agreement may also be amended from time to time by Lehman
Capital and the Depositor with the consent of the Holders of not less than
66-2/3% of the Class Certificate Principal Amount (or Percentage Interest) of
each Class 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 of modifying in any manner the rights of the Holders;
provided, however, that no such amendment may (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 or (ii) reduce the aforesaid percentages of Class
Certificate Principal Amount (or Percentage Interest) of Certificates of each
Class, the Holders of which are required to consent to any such amendment
without the consent of the Holders of 100% of the Class Certificate Principal
Amount (or Percentage Interest) of each Class of Certificates affected
thereby. For purposes of this paragraph, references to "Holder" or "Holders"
shall be deemed to include, in the case of any Class of Book-Entry
Certificates, the related Certificate Owners.

          (c) It shall not be necessary for the consent of Holders under this
Section 2.03 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 Holders shall be subject to such reasonable regulations
as the Trustee may prescribe.

     Section 2.04. 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 WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES APPLIED IN NEW YORK.

     Section 2.05. 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.

     Section 2.06. Indulgences; No Waivers. Neither the failure nor any delay
on the part of a party to exercise any right, remedy, power or privilege under
this Agreement shall operate as a waiver thereof, nor shall any single or
partial exercise of any right, remedy, power or privilege preclude any other
or further exercise of the same or of any other right, remedy, power or
privilege, nor shall any waiver of any right, remedy, power or privilege with
respect to any occurrence be construed as a waiver of such right, remedy,
power or privilege with respect to any other occurrence. No waiver shall be
effective unless it is in writing and is signed by the party asserted to have
granted such waiver.

     Section 2.07. Headings Not to Affect Interpretation. The headings
contained in this Agreement are for convenience of reference only, and they
shall not be used in the interpretation hereof.

     Section 2.08. Benefits of Agreements. Nothing in this Agreement, express
or implied, shall give to any Person, other than the parties to this Agreement
and their successors hereunder, any benefit or any legal or equitable right,
power, remedy or claim under this Agreement.

     Section 2.09. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original, and all of
which together shall constitute one and the same instrument.


         IN WITNESS WHEREOF, Lehman Capital and the Depositor have caused
their names to be signed hereto by their respective duly authorized officers
as of the date first above written.

                                           LEHMAN CAPITAL, A DIVISION OF
                                             LEHMAN BROTHERS HOLDINGS INC.



                                            By:_______________________________
                                                Name:  Joseph J. Kelly
                                                Title: Authorized Signatory

                                            STRUCTURED ASSET SECURITIES
                                              CORPORATION


                                            By: ______________________________
                                                 Name:  Stanley P. Labanowski
                                                 Title: Authorized Signatory


                                 SCHEDULE A

                            MORTGAGE LOAN SCHEDULE








                                                                     Execution

                          SPECIAL SERVICING AGREEMENT

     THIS SPECIAL SERVICING AGREEMENT (this "Agreement"), entered into as of
the 1st day of April, 1998, by and between LEHMAN CAPITAL, A DIVISION OF
LEHMAN BROTHERS HOLDINGS INC., a Delaware corporation ("Lehman Capital"), and
OCWEN FEDERAL BANK FSB, a federal savings bank ("the Special Servicer"):

                                   RECITALS

     WHEREAS, Lehman Capital has conveyed certain Mortgage Loans identified on
Schedule I hereto (the "Serviced Mortgage Loans") to Structured Asset
Securities Corporation ("SASCO"), which in turn has conveyed the Serviced
Mortgage Loans to First Union National Bank, as trustee (the "Trustee") under
a trust agreement dated as of April 1, 1998 (the "Trust Agreement"), among the
Trustee, Norwest Bank Minnesota, National Association, as master servicer
("Norwest," and, together with any successor Master Servicer appointed
pursuant to the provisions of the Trust Agreement, the "Master Servicer") and
SASCO.

     WHEREAS, multiple classes of Certificates, including the Class X
Certificate, will be issued on the Closing Date pursuant to the Trust
Agreement, and Lehman Pass-Through Securities Inc., or a nominee thereof,
(together with any successor in interest thereto and any permitted assignee or
transferee thereof, the "Directing Holder") is expected to be the initial
registered Holder of the Class X Certificate;

         WHEREAS, Lehman Capital desires that the Special Servicer perform the
services  with  respect to the  Serviced  Mortgage  Loans as  provided in this
Agreement  (including  those  provisions  that are  incorporated  by reference
herein),  and  the  Special  Servicer  has  agreed  to do so,  subject  to the
conditions set forth herein.

     WHEREAS, Norwest and any successor Master Servicer shall be obligated,
among other things, to supervise the servicing of the Serviced Mortgage Loans
on behalf of the Trustee, and shall have the right, under certain
circumstances, to terminate the rights and obligations of the Special Servicer
under this Special Servicing Agreement.

     NOW, THEREFORE, in consideration of the mutual agreements hereinafter set
forth and for other good and valuable consideration, the receipt and adequacy
of which are hereby acknowledged, Lehman Capital and the Special Servicer
hereby agree as follows:

                                   AGREEMENT

     1. Definitions. Capitalized terms used and not defined in this Agreement,
including Exhibit A hereto and any provisions of the Servicing Agreement dated
as of December 1, 1997, between Lehman Capital and the Servicer (the
"Servicing Agreement") incorporated by reference herein, shall have the
meanings ascribed to such terms in the Trust Agreement.

     2. Special Servicing. The Special Servicer agrees, with respect to the
Serviced Mortgage Loans, to perform and observe the duties, responsibilities
and obligations that are to be performed and observed under the provisions of
the Servicing Agreement, except as otherwise provided herein and on Exhibit A
hereto, and that the provisions of the Servicing Agreement, as so modified,
are and shall be a part of this Agreement to the same extent as if set forth
herein in full.

     3. Master Servicing; Termination of Special Servicer. The Special
Servicer, including any successor special servicer hereunder, shall be subject
to the supervision of the Master Servicer, which Master Servicer shall be
obligated to ensure that the Special Servicer services the Serviced Mortgage
Loans in accordance with the provisions of this Agreement. The Master
Servicer, acting on behalf of the Trustee pursuant to the Trust Agreement,
shall have the same rights as the "Owner" (as defined in the Servicing
Agreement) to enforce the obligations of the Special Servicer under the
Servicing Agreement. The Master Servicer shall be entitled to terminate the
rights and obligations of the Special Servicer under this Agreement upon the
failure of the Special Servicer to perform any of its obligations under this
Agreement, after the expiration of any notice and cure periods, if any, as
provided in Section 9.01 of the Servicing Agreement. If the Special Servicer
is in default under this Agreement, after the expiration of any notice and
cure periods, if any, the Master Servicer shall, upon the written direction of
the Directing Holder, terminate the rights and obligations of the Special
Servicer under this Agreement.

     Upon prior written notice, the Directing Holder shall have the exclusive
right to terminate the rights and obligations of the Special Servicer under
this Agreement without cause and without payment of any termination fee in
connection with such termination; provided, that any successor special
servicer shall be appointed in the manner provided below.

     Notwithstanding anything to the contrary in Sections 9.01, 9.02 and 10.01
of the Servicing Agreement, the Directing Holder shall, within 30 days of the
receipt by the Special Servicer of a copy of any termination notice delivered
by the Master Servicer to the Special Servicer or upon delivery by the
Directing Holder of any such notice pursuant Section 9.02 or upon receipt by
the Directing Holder of any resignation notice given by the Special Servicer,
notify the Master Servicer in writing of the Directing Holder's nominee as
successor special servicer, which nominee shall be appointed as special
servicer by the Master Servicer unless the Master Servicer reasonably objects
to such nominee within 10 days following receipt of such notice. If the Master
Servicer objects to such nominee, then the Master Servicer shall, within such
10-day period, appoint a successor special servicer, which successor shall be
reasonably acceptable to the Directing Holder.

     4. No Representations. Neither the Special Servicer nor the Master
Servicer shall be obligated or required to make any representations and
warranties regarding the Serviced Mortgage Loans in connection with the
transactions contemplated by the Trust Agreement and issuance of the
certificates issued pursuant thereto.

     5. Notices. All notices and communications between or among the parties
hereto shall be in writing and shall be deemed received or given when mailed
first-class mail, postage prepaid, addressed to each other party at its
address specified below. Each party may designate to the other parties in
writing, from time to time, other addresses to which notices and
communications hereunder shall be sent.

     6. Governing Law. THIS SPECIAL SERVICING AGREEMENT SHALL BE GOVERNED BY,
AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK,
NOTWITHSTANDING NEW YORK OR OTHER CHOICE OF LAW RULES TO THE CONTRARY.

     7. Counterparts. This Agreement may be executed in any number of
counterparts, each of which when so executed shall be deemed to be an
original, but all of which counterparts shall together constitute but one and
the same instrument.

     8. Reconstitution. Lehman Capital and the Special Servicer agree that
this Agreement is a Reconstitution Agreement, and that the date hereof is the
Reconstitution Date, each as defined in the Servicing Agreement. This
Agreement amends the terms and provisions of the Servicing Agreement only with
respect to the Serviced Mortgage Loans identified on Schedule I hereto and
does not purport to amend or modify the Servicing Agreement with respect to
any other loans that are or may become subject to the Servicing Agreement.

     9. Notices and Remittances to the Master Servicer. All notices required
to be delivered to the Owner or the Master Servicer under this Agreement shall
be delivered to the Master Servicer at the following address:

                  Norwest Bank Minnesota, National Association
                  11000 Broken Land Parkway

                  Columbia, Maryland  21044

                  Attn:  Master Servicing Department, SASCO 1998-4

     Copies of all such notices, and all notices to be delivered to the
Directing Holder under this Agreement, shall be delivered to the Directing
Holder at the following address:

                  Ocwen Asset Investment Corp.
                  The Forum

                  Suite 1002

                  1675 Palm Beach Lakes Boulevard
                  West Palm Beach, Florida  33410
                  Attn:  Secretary

         All remittances required to be made to the Master Servicer under this
Agreement shall be made to the following wire account:

                  Norwest Bank Minnesota, National Association
                  Minneapolis, Minnesota

                  ABA#:  091-000-019

                  Account Name:  Corporate Trust Clearing
                  Account Number:  3970771416
                  For further credit to:  13423000, SASCO 1998-4

     10. Termination of Rights of Directing Holder. The parties hereto intend
that the Directing Holder be a third party beneficiary of this Agreement. All
rights of the Directing Holder hereunder and under the Trust Agreement and all
obligations of the other parties hereto with respect to the Directing Holder
shall terminate immediately upon any transfer of the Class X Certificate to
any other Person, unless (i) the Special Servicer consents in writing to the
transfer of such rights and (ii) the Trustee is provided with a letter from
each Rating Agency to the effect that the transfer of the rights of the
Directing Holder to such transferee will not result in the qualification,
withdrawal or downgrade of the ratings then assigned to any Class of
Certificates.

     11. Annual Audit Report. On or before April 30 of each year, beginning
with April 30, 1999, Special Servicer shall cause a firm of independent public
accountants (who may also render other services to Special Servicer), which is
a member of the American Institute of Certified Public Accountants, to furnish
a statement to Owner, Directing Holder and Master Servicer, to the effect that
such firm has examined certain documents and records for the preceding
calendar year (or during the period from the date of commencement of such
servicer's duties hereunder until the end of such preceding calendar year in
the case of the first such certificate) and that, on the basis of such
examination conducted substantially in compliance with the Uniform Single
Attestation Program for Mortgage Bankers, such firm is of the opinion that
Special Servicer's overall servicing operations have been conducted in
compliance with the Uniform Single Attestation Program for Mortgage Bankers
except for such exceptions that, in the opinion of such firm, the Uniform
Single Attestation Program for Mortgage Bankers requires it to report, in
which case such exceptions shall be set forth in such statement.

     12. Annual Officer's Certificate. On or before April 30 of each year,
beginning with April 30, 1999, the Special Servicer, at its own expense, will
deliver to the Owner, Directing Holder and Master Servicer a Servicing
Officer's certificate stating, as to each signer thereof, that (i) a review of
the activities of the Special Servicer during such preceding fiscal year and
of performance under this Agreement has been made under such officers'
supervision, and (ii) to the best of such officers' knowledge, based on such
review, the Special Servicer has fulfilled all its obligations under this
Agreement for such year, or, if there has been a default in the fulfillment of
all such obligations, specifying each such default known to such officers and
the nature and status thereof including the steps being taken by the Special
Servicer to remedy such default.

     Executed as of the day and year first above written.

                                       LEHMAN CAPITAL, A DIVISION OF
                                         LEHMAN BROTHERS HOLDINGS INC.


                                       By:
                                           _________________________________
                                           Name:  Joseph J. Kelly
                                           Title: Vice President


                                        OCWEN FEDERAL BANK FSB


                                        By:
                                             _______________________________
                                             Name:
                                             Title:


                                   EXHIBIT A

                   Modifications to the Servicing Agreement

1.        The following is hereby added immediately following the words
          "incidental fees and charges" in the definition of "Ancillary
          Income" in Article I: ", but not including any premium or penalty
          associated with a prepayment of principal of a Mortgage Loan."

2.        The definition of "Base Servicing Fee" is hereby amended by deleting
          the last sentence therefrom.

3.        The definition of "Custodial Agreement" in Article I is hereby
          deleted and replaced with the following:

          "The custodial agreements relating to custody of the Serviced
          Mortgage Loans among: (i) First Trust National Association, as
          Custodian, First Union National Bank, as Trustee, and Structured
          Asset Securities Corporation, (ii) Chase Bank of Texas, N.A., as
          Custodian, First Union National Bank, as Trustee, and Structured
          Asset Securities Corporation, (iii) Norwest Bank, Minnesota,
          National Association, as Custodian, First Union National Bank, as
          Trustee, and Structured Asset Securities Corporation, each dated as
          of April 1, 1998."

4.        The following is hereby added immediately following the words
          "Special Servicer" in the definition of "Opinion of Counsel" in
          Article I: "(except that such counsel must be Independent (as
          defined in the Trust Agreement) outside counsel with respect to any
          such opinion relating to the REMIC Provisions)"

5.        The definition of "Primary Servicer" in Article I is hereby deleted
          and replaced with the following:

          "Any of Option One Mortgage Corporation, Aurora Loan Services Inc.
          or any successor to either of them."

6.        The following definitions are hereby added to Article I:

               "Monthly Advance: With respect to each Remittance Date and each
               Mortgage, an amount equal to the Monthly Payment (with the
               interest portion of such Monthly Payment adjusted to the
               Mortgage Loan Remittance Rate) which was due on the Mortgage
               Loan, and (i) which was delinquent at the close of business on
               the immediately preceding Determination Date and (ii) which was
               not the subject of a previous Monthly Advance, unless such
               Advance would constitute a Nonrecoverable Advance.

               "REMIC Provisions: The provisions of the federal income tax law
               relating to a REMIC, which appear at Section 860A through 860G
               of Subchapter M of Chapter 1, Subtitle A of the Code, and
               related provisions, and regulations, rulings or pronouncements
               promulgated thereunder, as the foregoing may be in effect from
               time to time."

7.        The definition of "Remittance Date" in Article I is hereby deleted
          and replaced with the following:

               "The 18th day (or if such 18th day is not a Business Day, the
               first Business Day immediately following) of any month,
               following the First Remittance Date."

8.        is hereby amended by deleting the first, second and third paragraphs
          thereof in their entirety and, in the fourth paragraph thereof,
          deleting the following: "(and any applicable Acknowledgement
          Agreement)".

9.       (a)(i) is deleted in its entirety and replaced with the following:

               "(a)(i) Within five business days following a Transfer Date,
               the Special Servicer shall reimburse the Primary Servicer for
               all principal and interest and Servicing Advances made by such
               Primary Servicer and all accrued and unpaid Servicing Fees due
               to the Primary Servicer with respect to any Transferred
               Mortgage Loan identified on such Notice of Transfer for which
               the Primary Servicer has not been reimbursed. Thereafter, such
               amounts paid by the Special Servicer, if any, shall be
               reimbursed to the Special Servicer in accordance with Section
               3.04 hereof."

10.       is hereby amended by deleting clause (a) of the third paragraph of
          subsection (B) thereof and by adding the following at the end of
          such Section:

               "(C) In connection with the transfer of any Distressed Mortgage
               Loan, (i) the Special Servicer will be responsible for
               servicing the Distressed Mortgage Loan from and after the
               effective date of transfer of servicing to the Special
               Servicer, but shall have no obligation to service such
               Distressed Mortgage Loan on or prior to such effective date of
               the transfer of servicing, (ii) notwithstanding clause (i)
               above, the Special Servicer shall not include the Distressed
               Mortgage Loan in its monthly remittance report pursuant to
               Section 4.02 for the month in which such transfer is effected
               and shall not be obligated to make the Monthly Advance with
               respect to such Distressed Mortgage Loan on the Remittance Date
               in the month in which such transfer is effected, in each case,
               regardless of whether the Remittance Date occurs before or
               after the effective date of such transfer, (iii) the amount of
               Monthly Advances to be reimbursed to the Servicer by the
               Special Servicer hereunder shall include the Monthly Advance
               made by the Servicer on such Remittance Date, regardless of
               whether the Servicer makes such Monthly Advance before or after
               the effective date of such transfer, and (iv) the Special
               Servicer shall be entitled to the Base Servicing Fee with
               respect to each such Distressed Mortgage Loan for the entire
               month in which such transfer occurs.

          Promptly after the transfer of any Distressed Mortgage Loan, the
          Special Servicer shall use its best reasonable efforts to determine
          whether any seller's representation or warranty applicable to such
          Mortgage Loan has been breached, and shall notify the Trustee and
          the Master Servicer in writing of any possible breach so identified.
          The Special Servicer may conclusively rely upon information provided
          by Lehman Capital, including copies of any related agreements of
          sale, in determining which representations and warranties are
          applicable to such Mortgage Loan."

11.       The words "Special Servicer, in trust for Lehman Capital, A Division
          of Lehman Brothers Holdings, Inc., owner of Residential Mortgage
          Loans, Group No. ______, and various Mortgagors" in the first
          paragraph of Section 3.03 are hereby deleted and replaced with the
          following: "Ocwen Federal Bank FSB, in trust for Norwest Bank
          Minnesota, National Association, as master servicer for SASCO
          1998-4."

12.       (ii) is deleted in its entirety and replaced with the following:

               "(ii) to reimburse itself for unreimbursed advances of the
               Special Servicer's funds made pursuant to Section 2.05 hereof,
               including advances by the Special Servicer to reimburse the
               Primary Servicer for principal and interest advances, Servicing
               Advances and unpaid servicing fees due to them, if any, the
               Special Servicer's right to reimburse itself pursuant to this
               subclause (ii) being limited to either (x) amounts received on
               the related Transferred Mortgage Loan which represent late
               payments of principal and/or interest respecting which any such
               advance was made, and related Liquidation Proceeds,
               condemnation proceeds, Insurance Proceeds, REO Disposition
               Proceeds and other amounts received in respect of the related
               Mortgage Loan, it being understood that, in the case of any
               such reimbursement, the Special Servicer's right thereto shall
               be prior to the rights of the Owner, the Master Servicer, any
               Primary Servicer and any Certificateholder or (y) any other
               amounts in the Collection Account in the event that such
               advances have been deemed to be Nonrecoverable Advances or are
               not recovered from recoveries in respect of the related
               Transferred Mortgage Loan or REO Property after a final
               determination has been made as to what amounts have been or
               will be recovered, it being understood that for those
               Transferred Mortgage Loans in foreclosure, the Owner shall
               reimburse the Special Servicer for Servicing Advances and
               advances made pursuant to Section 2.05 hereof through the
               completion of the sale of the defaulted Mortgage Loan, or the
               foreclosure and disposition of the REO Property;"

13.       is hereby amended by deleting clause (iii) in its entirety and
          replacing such clause with the following clauses (iii) and (iv):

               "(iii) to reimburse itself for Monthly Advances of the Special
               Servicer's funds made pursuant to Section 7.03, the Special
               Servicer's right to reimburse itself pursuant to this subclause
               (iii) being limited to amounts received on the related Mortgage
               Loan which represent late payments of principal and/or interest
               respecting which any such advance was made, related Liquidation
               Proceeds, Insurance Proceeds, condemnation proceeds, REO
               Disposition Proceeds and other amounts received in respect of
               the related REO Property, and such other amounts as may be
               collected by the Special Servicer from the Mortgagor or
               otherwise relating to such Mortgage Loan, it being understood
               that, in the case of any such reimbursement, the Special
               Servicer's right thereto shall be prior to the rights of the
               Owner, the Master Servicer, any Primary Servicer and any
               Certificateholder ; provided, that if the Special Servicer
               reasonably determines that any unreimbursed Advance is a
               Nonrecoverable Advance, the foregoing limitation shall not
               apply thereto;

                    (i) to reimburse itself for unreimbursed Servicing
Advances, and for any unpaid Base Servicing Fees, the Special Servicer's right
to reimburse itself pursuant to this subclause (viii) with respect to any
Mortgage Loan being limited to related late collections, Liquidation Proceeds,
condemnation proceeds, Insurance Proceeds, REO Disposition Proceeds and other
amounts received in respect of the related REO Property, and such other
amounts as may be collected by the Special Servicer from the Mortgagor or
otherwise relating to the Mortgage Loan, it being understood that, in the case
of any such reimbursement, the Special Servicer's right thereto shall be prior
to the rights of the Owner; provided, that if the Special Servicer reasonably
determines that any unreimbursed Advance is a Nonrecoverable Advance, the
foregoing limitation shall not apply thereto;"

          Clauses (iv) through (viii) in Section 3.04 are hereby redesignated
          clauses (v) through (ix), as applicable.

14.       The words "Special Servicer, in trust for Lehman Capital, A Division
          of Lehman Brothers Holdings, Inc., owner of Residential Mortgage
          Loans, Group No. ______, and various Mortgagors" in the first
          paragraph of Section 3.05 are hereby deleted and replaced with the
          following: "Ocwen Federal Bank FSB, in trust for Norwest Bank
          Minnesota, National Association, as master servicer for SASCO
          1998-4."

15.       (a) is deleted in its entirety and replaced with the following:

               "(a) Default Management Responsibilities: Subject only to
               Accepted Servicing Practices and Section 3.11 below, the
               Special Servicer shall have full power and authority to do or
               cause to be done any and all things in connection with such
               servicing and administration which it may deem necessary or
               desirable. Without limiting the generality of the foregoing,
               the Special Servicer is hereby authorized and empowered by the
               Owner (if, in the Special Servicer's reasonable judgment, such
               action with respect to the Transferred Mortgage Loans and/or
               the Mortgaged Properties is in the best interests of Owner in
               accordance with, or is required by, this Agreement, and subject
               to Accepted Servicing Practices to take the following actions
               (without limitation): (i) prepare, execute and deliver, on
               behalf of the Owner with expenses associated therewith being
               Servicing Advances hereunder, any and all financing statements,
               continuation statements and other documents or instruments
               necessary to maintain the lien on each Mortgaged Property and
               related collateral; and, subject to the remaining terms and
               provisions of this Section, modifications, waivers (including,
               without limitation, waivers of any late payment charge in
               connection with any delinquent payment on a Transferred
               Mortgage Loan), consents, amendments, discounted payoff
               agreements, forbearance agreements, cash management agreements
               or consents to or with respect to any documents contained in
               the related servicing file; and any and all instruments of
               satisfaction or cancellation, or of partial or full release or
               discharge, and all other instruments comparable to any of the
               types of instruments described in this subsection (i), and (ii)
               institute and prosecute judicial and non-judicial foreclosures,
               suits on promissory notes, indemnities, guaranties or other
               loan documents, actions for equitable and/or extraordinary
               relief (including, without limitation, actions for temporary
               restraining orders, injunctions, and appointment of receivers),
               suits for waste, fraud and any and all other tort, contractual
               and/or other claims of whatever nature, and to appear in and
               file on behalf of the Owner such pleadings or documents as may
               be necessary or advisable in any bankruptcy action, state or
               federal suit or any other action. In the event that any
               Mortgage Loan is in default or, in the judgment of the Special
               Servicer, such default is reasonably foreseeable, the Special
               Servicer, consistent with Accepted Servicing Practices, may
               waive, modify or vary any term of such Mortgage Loan (including
               modifications that would change the Mortgage Interest Rate,
               defer or forgive the payment of principal or interest or extend
               the final maturity date of such Mortgage Loan), accept payment
               from the related Mortgagor of an amount less than the full
               outstanding and unpaid principal balance in final satisfaction
               of such Mortgage or consent to the postponement of strict
               compliance with any such term or otherwise grant indulgence to
               any Mortgagor if in the Special Servicer's determination such
               waiver, modification, postponement or indulgence is not
               materially adverse to the interests of the Certificateholders
               (taking into account any estimated Realized Loss that might
               result absent such action). In addition, if, with respect to a
               Transferred Mortgage Loan, a default (or any condition
               resulting in a default being reasonably foreseeable) is cured
               (such Mortgage Loan being referred to herein as a "Performing
               Loan"), the Special Servicer may thereafter waiver, modify or
               vary terms of such Performing Loan provided that no such action
               will (A) decrease the Mortgage Rate on the Performing Loan, (B)
               defer or forgive the payment of principal or interest (except
               with respect to liquidation of such Performing Loan) or (C)
               extend the final maturity date of such Performing Loan,
               provided, however, that no such modification shall be permitted
               to the extent that it would (a) affect adversely the status of
               the Trust Fund as a REMIC or (b) cause the Trust Fund to be
               subject to a tax on "prohibited transactions" or
               "contributions" pursuant to the REMIC Provisions.

               Notwithstanding anything to the contrary in this Agreement, the
               Special Servicer shall not waive any premium or penalty in
               connection with a prepayment of principal of any Mortgage Loan,
               and shall not consent to the modification of any Mortgage Note
               to the extent that such modification relates to payment of a
               prepayment premium or penalty; provided, that the foregoing
               shall not (i) apply to any Severely Delinquent Loan or (ii)
               prohibit the Special Servicer from entering into any agreement
               for modification, waiver, forbearance, amendment or discounted
               payoff of a Mortgage Loan in accordance with this Agreement
               that does not have the effect of waiving any prepayment premium
               or penalty or modifying any provision requiring payment
               thereof.

               Notwithstanding the foregoing, in the event of any conflict
               between the provisions of this Section 3.10 and the provisions
               of Section 3.11, the provisions of Section 3.11 shall control."

16.       (e) is hereby deleted in its entirety and replaced with the
          following:

               "(e) At any time, the Directing Holder may request that the
               Special Servicer take a particular action with respect to a
               particular Mortgage Loan, including without limitation
               foreclosure, waivers or modifications. Any such request shall
               be in writing, a copy of which shall be delivered to the Master
               Servicer. If the Special Servicer determines that such
               requested action is consistent with Accepted Servicing
               Practices, then the Special Servicer may, but is not required
               to, comply with such request. Within two Business Days of
               receipt of such a request, the Special Servicer shall notify
               the Directing Holder whether the Special Servicer intends to
               comply with such request. If the Special Servicer declines to
               comply with such request (or fails to notify the Directing
               Holder of its decision within the two Business Day period),
               then the Directing Holder may, at its sole option and upon
               written notice to the Special Servicer and the Master Servicer,
               purchase the related Mortgage Loan from the Trust Fund at the
               Purchase Price (as defined in the Trust Agreement). If the
               Directing Holder does not indicate whether it wishes to
               exercise this option within two Business Days of receipt of
               such notice, then the Directing Holder shall not be entitled to
               object to the action taken by the Special Servicer with respect
               to such Mortgage Loan." In addition, the Directing Holder may
               purchase any Severely Delinquent Mortgage Loan upon written
               notice to the Master Servicer and the Special Servicer within
               three days of the day on which such Mortgage Loan becomes a
               Severely Delinquent Loan.

          The Special Servicer shall have the right to purchase any Severely
          Delinquent Loan at the Purchase Price (as defined in the Trust
          Agreement). The Special Servicer shall send a written notice (the
          "Initial Notice") to the Directing Holder advising the Directing
          Holder that the Special Servicer intends to purchase a Severely
          Delinquent Loan. The Directing Holder shall have the option to (i)
          direct the Special Servicer not to purchase any such Severely
          Delinquent Loan but to proceed with a particular default resolution
          strategy otherwise mutually acceptable to the Special Servicer and
          the Directing Holder, (ii) direct the Special Servicer to proceed
          with the purchase of such loan on the terms proposed by the Special
          Servicer, or (iii) indicate that the Directing Holder intends to
          purchase such Severely Delinquent Loan, in which case the Directing
          Holder shall have the sole right and option to purchase the Severely
          Delinquent Loan at the Purchase Price; provided, however, that if
          the Directing Holder fails or refuses to deliver a written notice of
          its election to the Special Servicer within two Business Days after
          the Special Servicer has sent to the Directing Holder the Initial
          Notice, then the Directing Holder shall be deemed to have consented
          to the Special Servicer purchasing the Severely Delinquent Loan for
          its own account."

17.       The following Section 3.11 is hereby added immediately following
          Section 3.10:

                  "Section 3.11 REMIC Provisions.

               (b) Unless the Mortgagor is in default with respect to the
related Mortgage Loan or such default is, in the judgment of the Special
Servicer, reasonably foreseeable, the Special Servicer shall not permit any
modification of any material term of any Mortgage Loan, including any
modification that would change the Mortgage Interest Rate, defer or forgive
the payment of principal or interest, reduce or increase the outstanding
principal balance (except for actual payments of principal), change the final
maturity date on such Mortgage Loan, or permit any alteration, substitution or
release of any collateral for such Mortgage Loan.

               (c) The Special Servicer shall dispose of any REO Property as
soon as possible and shall sell such REO Property in any event within three
years after title has been taken to such REO Property, unless (i) the Owner
shall have been supplied with an Opinion of Counsel to the effect that the
holding by the Trust Fund of such Mortgaged Property subsequent to such
three-year period (and specifying the period beyond such three-year period for
which the Mortgaged Property may be held) will not result in the imposition of
taxes on "prohibited transactions" of the Trust Fund as defined in section
860F of the Code, or cause the related REMIC to fail to qualify as a REMIC, in
which case the Trust Fund may continue to hold such Mortgaged Property
(subject to any conditions contained in such Opinion of Counsel), or (ii) the
Owner (at the Special Servicer's expense) or the Special Servicer shall have
applied for, not later than 61 days prior to the expiration of such three-year
period, an extension of such three-year period in the manner contemplated by
section 856(e)(3) of the Code, in which case the three-year period shall be
extended by the applicable period. If a period longer than three years is
permitted under the foregoing sentence and is necessary to sell any REO
Property, (i) the Special Servicer shall report monthly to the Owner as to the
progress being made in selling such REO Property and (ii) if, with the written
consent of the Owner, a purchase money mortgage is taken in connection with
such sale, such purchase money mortgage shall name the Special Servicer as
mortgagee, and such purchase money mortgage shall not be held pursuant to this
Agreement, but instead a separate participation agreement between the Special
Servicer and the Owner shall be entered into with respect to such purchase
money mortgage.

               Notwithstanding any other provision of this Agreement, no
               Mortgaged Property held by a REMIC shall be rented (or allowed
               to continue to be rented) or otherwise used for the production
               of income by or on behalf of the Trust Fund or sold in such a
               manner or pursuant to any terms that would (i) cause such
               Mortgaged Property to fail to qualify at any time as
               "foreclosure property" within the meaning of section 860G(a)(8)
               of the Code, (ii) subject the Trust Fund to the imposition of
               any federal or state income taxes on "net income from
               foreclosure property" with respect to such Mortgaged Property
               within the meaning of section 860G(c) of the Code, or (iii)
               cause the sale of such Mortgaged Property to result in the
               receipt by the Trust Fund of any income from non-permitted
               assets as described in section 860F(a)(2)(B) of the Code,
               unless the Special Servicer has agreed to indemnify and hold
               harmless the Trust Fund with respect to the imposition of any
               such taxes."

18.       The first paragraph of Section 4.01 is hereby deleted and replaced
          with the following:

               "On each Remittance Date the Servicer shall remit by wire
               transfer of immediately available funds to the Master Servicer
               (a) all amounts deposited in the Custodial Account as of the
               close of business on the last day of the related Collection
               Period (net of charges against or withdrawals from the
               Custodial Account pursuant to Section 3.04), plus (b) all
               amounts, if any, which the Servicer is obligated to advance
               pursuant to Section 7.03, minus (c) any amounts attributable to
               Principal Prepayments, Liquidation Proceeds, Insurance Proceeds
               or REO Disposition Proceeds received after the applicable
               Prepayment Period, which amounts shall be remitted on the
               following Remittance Date, together with any additional
               interest required to be deposited in the Custodial Account in
               connection with such Principal Prepayment in accordance with
               Section 7.03, and minus (d) any amounts attributable to Monthly
               Payments collected but due on a due date or dates subsequent to
               the first day of the month in which such Remittance Date
               occurs, which amounts shall be remitted on the Remittance Date
               next succeeding the Due Period for such amounts."

19.       is hereby amended by deleting the words "Remittance Date" in the
          first line of such Section, and substituting the following: "tenth
          day of each month, or if such tenth day is not a Business Day, the
          immediately preceding Business Day"

20.       is hereby amended by deleting the last sentence of each of
          subsections (a) and (b) thereof.

21.       The following Sections 7.03 and 7.04 are hereby added immediately
          following Section 7.02:

               "Section 7.03 Monthly Advances and Compensating Interest.

          (d) Notwithstanding anything to the contrary herein, the Special
Servicer shall make Monthly Advances (other than Balloon Payments as defined
in the Trust Agreement) on each Remittance Date through the Remittance Date
immediately preceding the distribution of all Liquidation Proceeds and other
payments or recoveries (including Insurance Proceeds and condemnation
proceeds) with respect to the related Mortgage Loans.

          (e) Notwithstanding anything to the contrary herein, with respect to
each Principal Prepayment of a Mortgage Loan the Special Servicer shall
deposit in the Custodial Account on a daily basis and retain therein the
Prepayment Interest Shortfall Amount, if any, for the month of distribution.
Such deposit shall be made from the Special Servicer's own funds, without
reimbursement therefor, up to a maximum amount per month equal to the
aggregate of the Base Servicing Fees otherwise payable to the Special Servicer
with respect to such month.

          Section 1.02. Special Servicing Compensation. Notwithstanding
anything to the contrary herein, the Special Servicer shall not be entitled to
pay itself any compensation out of amounts collected on or in respect of the
Mortgage Loans other than the Base Servicing Fee and any Ancillary Income, to
the extent provided herein. Any other compensation payable to the Special
Servicer hereunder, including the Special Servicing Fee, the Extended Special
Servicing Fee and the Incentive Fee, shall be payable to the Special Servicer
on each Distribution Date as provided in the Trust Agreement."

22.      is hereby deleted in its entirety.

23.      The following paragraph is added at the end of Section 10.01:

               "Neither the Master Servicer nor any successor special servicer
               (including the Owner and the Master Servicer) shall be liable
               for any acts or omissions of the Special Servicer or any
               predecessor servicer. In particular, neither the Master
               Servicer nor any successor special servicer (including the
               Owner and the Master Servicer) shall be liable for any
               servicing errors or interruptions resulting from any failure of
               the Special Servicer to maintain computer and other information
               systems that are year-2000 compliant."

24.      All  references  in the  Servicing  Agreement or in any  schedules or
         exhibits thereto,  including,  without limitation,  Exhibit I, to the
         "Decision Matrix" are hereby deleted in their entirety.

25.      The following definition is hereby added:

               "Prepayment Period: With respect to the first Remittance Date,
               the period beginning on the Cut-off Date and ending on May 1.
               With respect to each subsequent Remittance Date, the period
               commencing on the second day of the month immediately preceding
               the month in which such Remittance Date occurs and ending on
               the first day of the month in which such Remittance Date
               occurs."

26.      The definitions of "Extended Special Servicing Fee," "Incentive Fee,"
         "Loss  Severity  Percentage"  and "Special  Servicing Fee" are hereby
         deleted in their entirety.

27.      is hereby deleted in its entirety and replaced with the following:

               "Section 5.01 Servicing Compensation. As consideration for
               servicing the Transferred Mortgage Loans subject to this
               Agreement, the Special Servicer shall be entitled to (i) retain
               the Base Servicing fee equal to one-twelfth of (x) the
               Servicing Fee Rate and (y) the outstanding principal balance of
               such Transferred Mortgage Loan during any month or part thereof
               (unless otherwise specified herein) and (ii) receive such
               additional compensation as is specified in a separate letter
               agreement dated the Closing Date."







                              SERVICING AGREEMENT

     THIS SERVICING AGREEMENT (this "Agreement"), entered into as of the 1st
day of April, 1998, by and between LEHMAN CAPITAL, A DIVISION OF LEHMAN
BROTHERS HOLDINGS INC., a Delaware corporation ("Lehman Capital"), and AURORA
LOAN SERVICES INC., a Delaware corporation ("the Servicer"), recites and
provides as follows:

                                   RECITALS

     WHEREAS, Lehman Capital has conveyed certain Mortgage Loans identified on
Schedule I hereto (the "Serviced Mortgage Loans") on a servicing-retained
basis to Structured Asset Securities Corporation ("SASCO"), which in turn has
conveyed the Serviced Mortgage Loans to First Union National Bank, as trustee
(the "Trustee") under a trust agreement dated as of April 1, 1998 (the "Trust
Agreement"), among the Trustee, Norwest Bank Minnesota, National Association,
as master servicer ("Norwest," and, together with any successor Master
Servicer appointed pursuant to the provisions of the Trust Agreement, the
"Master Servicer") and SASCO.

     WHEREAS, Lehman Capital continues to own the servicing rights to the
Serviced Mortgage Loans, and may freely transfer such rights, subject to the
terms hereof.

     WHEREAS, Lehman Capital desires that the Servicer service the Serviced
Mortgage Loans, and the Servicer has agreed to do so, subject to the right of
Lehman Capital to terminate the rights and obligations of the Servicer
hereunder at any time and to the other conditions set forth herein.

     WHEREAS, Norwest and any successor Master Servicer shall be obligated,
among other things, to supervise the servicing of the Serviced Mortgage Loans
on behalf of the Trustee, and shall have the right, under certain
circumstances, to terminate the rights and obligations of the Servicer under
this Servicing Agreement.

         NOW, THEREFORE, in consideration of the mutual agreements hereinafter
set forth and for other  good and  valuable  consideration,  the  receipt  and
adequacy of which are hereby  acknowledged,  Lehman  Capital and the  Servicer
hereby agree as follows:

                                   AGREEMENT

     1. Definitions. Capitalized terms used and not defined in this Agreement,
        -----------
including Exhibit A hereto and any provisions of the Flow Servicing Agreement
dated as of September 1, 1997, between Lehman Capital and the Servicer (the
"Flow Servicing Agreement") incorporated by reference herein, shall have the
meanings ascribed to such terms in the Trust Agreement.

     2. Servicing. The Servicer agrees, with respect to the Serviced Mortgage
        ---------
Loans, to perform and observe the duties, responsibilities and obligations
that are to be performed and observed under the provisions of the Flow
Servicing Agreement, except as otherwise provided herein and on Exhibit A
hereto, and that the provisions of the Flow Servicing Agreement, as so
modified, are and shall be a part of this Agreement to the same extent as if
set forth herein in full.

     3. Master Servicing; Termination of Servicer. The Servicer, including any
        ----------------
successor servicer hereunder, shall be subject to the supervision of the
Master Servicer, which Master Servicer shall be obligated to ensure that the
Servicer services the Serviced Mortgage Loans in accordance with the
provisions of this Agreement. The Master Servicer, acting on behalf of the
Trustee pursuant to the Trust Agreement, shall have the same rights as the
"Owner" (as defined in the Flow Servicing Agreement) to enforce the
obligations of the Servicer under the Flow Servicing Agreement. The Master
Servicer shall be entitled to terminate the rights and obligations of the
Servicer under this Agreement upon the failure of the Servicer to perform any
of its obligations under this Agreement, as provided in Article IX of the Flow
Servicing Agreement.

     In addition, in the event that Lehman Capital transfers the servicing
rights in respect of the Serviced Mortgage Loans to one or more successor
servicers, the rights and obligations of the Servicer under this Agreement
shall terminate, at the sole option of Lehman Capital, without cause, upon
thirty days written notice to the Servicer, and each successor servicer shall
succeed to the rights and obligations of the Servicer under this Agreement as
of such date. Upon such termination the terminated Servicer shall not be
entitled to the Servicing Fee or any portion thereof, or, except as provided
in the Flow Servicing Agreement, to any other amounts in respect of the
Serviced Mortgage Loans.

     The Servicer agrees that, notwithstanding anything to the contrary in the
Flow Servicing Agreement, Lehman Capital is the sole owner of the servicing
rights relating to the Serviced Mortgaged Loans, and the Servicer shall have
no right to transfer the servicing thereof.

     4. No Representations. Neither the Servicer nor the Master Servicer shall
        ------------------
be obligated or required to make any representations and warranties regarding
the Serviced Mortgage Loans in connection with the transactions contemplated
by the Trust Agreement and issuance of the certificates issued pursuant
thereto.

     5. Notices. All notices and communications between or among the parties
        -------
hereto shall be in writing and shall be deemed received or given when mailed
first-class mail, postage prepaid, addressed to each other party at its
address specified below. Each party may designate to the other parties in
writing, from time to time, other addresses to which notices and
communications hereunder shall be sent.

     6. Governing Law. THIS SERVICING AGREEMENT SHALL BE GOVERNED BY, AND
        -------------
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK,
NOTWITHSTANDING NEW YORK OR OTHER CHOICE OF LAW RULES TO THE CONTRARY.

     7. Counterparts. This Agreement may be executed in any number of
        ------------
counterparts, each of which when so executed shall be deemed to be an
original, but all of which counterparts shall together constitute but one and
the same instrument.

     8. Reconstitution. Lehman Capital and the Servicer agree that this
        --------------
Agreement is a Reconstitution Agreement, and that the date hereof is the
Reconstitution Date, each as defined in the Flow Servicing Agreement.

     9. Notices and Remittances to the Master Servicer. All notices required
        -----------------------
to be delivered to the Owner or the Master Servicer under this Agreement shall
be delivered to the Master Servicer at the following address:

        Norwest Bank Minnesota, National Association
        11000 Broken Land Parkway
        Columbia, Maryland  21044
        Attn:  Master Servicing Department, SASCO 1998-4

     All remittances required to be made to the Master Servicer under this
Agreement shall be made to the following wire account:

        Norwest Bank Minnesota, National Association
        Minneapolis, Minnesota
        ABA#:  091-000-019
        Account Name:  Corporate Trust Clearing
        Account Number:  3970771416
        For further credit to:  13423000, SASCO 1998-4

     10. Errors and Omissions Insurance. The Servicer shall keep in force
         ------------------------------
during the term of this Agreement a fidelity bond and a policy or policies of
insurance covering errors and omissions in the performance of the Servicer's
obligations under this Agreement. Such fidelity bond and policy pr policies
shall be maintained with recognized insurers and shall be in such form and
amount as would permit the Servicer to be qualified as a FNMA or FHLMC
seller-servicer. The Servicer shall be deemed to have complied with this
provision if an affiliate of the Servicer has such errors and omissions and
fidelity bond coverage and, by the terms of such insurance policy or fidelity
bond, the coverage afforded thereunder extends to the Servicer. The Servicer
shall furnish to the Master Servicer a copy of each such bond and insurance
policy if (i) the Master Servicer so requests and (ii) the Servicer is not an
affiliate of Lehman Brothers Inc. at the time of such request.

     11. Annual Audit Report. On or before April 30 of each year, beginning
         -------------------
with April 30, 1999, Servicer shall cause a firm of independent public
accountants (who may also render other services to Servicer), which is a
member of the American Institute of Certified Public Accountants, to furnish a
statement to Owner, Directing Holder and Master Servicer, to the effect that
such firm has examined certain documents and records for the preceding fiscal
year (or during the period from the date of commencement of such servicer's
duties hereunder until the end of such preceding fiscal year in the case of
the first such certificate) and that, on the basis of such examination
conducted substantially in compliance with the Uniform Single Attestation
Program for Mortgage Bankers, such firm is of the opinion that Servicer's
overall servicing operations have been conducted in compliance with the
Uniform Single Attestation Program for Mortgage Bankers except for such
exceptions that, in the opinion of such firm, the Uniform Single Attestation
Program for Mortgage Bankers requires it to report, in which case such
exceptions shall be set forth in such statement.

     12. Annual Officer's Certificate. On or before April 30 of each year,
         ----------------------------
beginning with April 30, 1999, the Servicer, at its own expense, will deliver
to the Owner, Directing Holder and Master Servicer a Servicing Officer's
certificate stating, as to each signer thereof, that (i) a review of the
activities of the Servicer during such preceding fiscal year and of
performance under this Agreement has been made under such officers'
supervision, and (ii) to the best of such officers' knowledge, based on such
review, the Servicer has fulfilled all its obligations under this Agreement
for such year, or, if there has been a default in the fulfillment of all such
obligations, specifying each such default known to such officers and the
nature and status thereof including the steps being taken by the Servicer to
remedy such default.


     Executed as of the day and year first above written.

                                           LEHMAN CAPITAL, A DIVISION OF
                                             LEHMAN BROTHERS HOLDINGS INC.



                                           By:
                                              -----------------------------
                                              Name:  Joseph J. Kelly
                                              Title: Authorized Signatory


                                           AURORA LOAN SERVICES INC.



                                           By:
                                              -----------------------------
                                              Name:
                                              Title:




                                   EXHIBIT A

                 Modifications to the Flow Servicing Agreement


1.   The following is hereby added immediately following the words "incidental
     fees and charges" in the definition of "Ancillary Income" in Article I:
     ", but not including any premium or penalty associated with a prepayment
     of principal of a Mortgage Loan."

2.   The definition of "Custodial Agreement" in Article I is hereby deleted
     and replaced with the following:

          "The custodial agreements relating to custody of the Serviced
          Mortgage Loans among: (i) First Trust National Association, as
          Custodian, First Union National Bank, as Trustee, and Structured
          Asset Securities Corporation, (ii) Chase Bank of Texas, N.A., as
          Custodian, First Union National Bank, as Trustee, and Structured
          Asset Securities Corporation, and (iii) Norwest Bank Minnesota,
          National Association, as Custodian, First Union National Bank, as
          Trustee, and Structured Asset Securities Corporation, each dated as
          of April 1, 1998."

3.   The following definition is hereby added:

          "Prepayment Period: With respect to the first Remittance Date, the
          period beginning on the Cut-off Date and ending on May 1. With
          respect to each subsequent Remittance Date, the period commencing on
          the second day of the month immediately preceding the month in which
          such Remittance Date occurs and ending on the first day of the month
          in which such Remittance Date occurs."

4.   The definition of "Monthly Advance" in Article I is hereby amended by
     adding at the end of such definition the following: ", but only to the
     extent that such amount is expected, in the reasonable judgment of the
     Servicer, to be recoverable from collections or other recoveries in
     respect of such Mortgage Loan."

5.   The definition of "Qualified Depository" in Article I is hereby deleted
     and replaced with the following:

          "Any of (i) a depository the accounts of which are insured by the
          FDIC and the debt obligations of which are rated AA or better by
          Fitch and S&P; (ii) the corporate trust department of any bank the
          debt obligations of which are rated at least A-1 or its equivalent
          by each of Fitch and S&P; or (iii) the Servicer, unless the Master
          Servicer is notified by either Fitch or S&P that the designation of
          the Servicer as a Qualified Depository will result in a
          qualification, withdrawal or downgrade of the then-current rating of
          any of the Certificates."

6.   The definition of "Remittance Date" in Article I is hereby deleted and
     replaced with the following:

          "The 18th day (or if such 18th day is not a Business Day, the first
          Business Day immediately following) of any month, following the
          First Remittance Date."

7.   The definition of "Servicing Advance" in Article I is hereby amended by
     adding, immediately after the phrase "but not limited to, the cost of",
     the following: "transfer of servicing of Distressed Mortgage Loans to the
     Special Servicer pursuant to Section 9.02, and".

8.   The first sentence of the definition of "Servicing Fee" in Article I is
     hereby deleted and replaced with the following: "The servicing fee shall
     be an amount equal to one-twelfth the product of (a) a rate per annum
     equal to 0.50% and (b) the outstanding principal balance of such Mortgage
     Loan. The obligation of the Master Servicer to pay the Servicing Fee is
     limited to, and the Servicing Fee is payable solely from, the interest
     portion (including recoveries with respect to interest from Liquidation
     Proceeds to the extent permitted by Section 3.02 of this Agreement) of
     such Monthly Payment collected by the Servicer, or as otherwise provided
     under this Agreement."

9.   The fourth and fifth paragraphs of Section 3.01 are hereby deleted and
     replaced with the following paragraph:

          "Consistent with the terms of this Agreement, the Servicer may waive
          any late payment charge, assumption fee or other fee that may be
          collected in the ordinary course of servicing the Mortgage Loans.
          The Servicer shall not make any future advances to any obligor under
          any Mortgage Loan, and (unless the Mortgagor is in default with
          respect to the Mortgage Loan or such default is, in the judgment of
          the Servicer, reasonably foreseeable) the Servicer shall not permit
          any modification of any material term of any Mortgage Loan,
          including any modification that would change the Mortgage Interest
          Rate, defer or forgive the payment of principal or interest, reduce
          or increase the outstanding principal balance (except for actual
          payments of principal) or change the final maturity date on such
          Mortgage Loan. In the event of any such modification which permits
          the deferral of interest or principal payments on any Mortgage Loan,
          the Servicer shall, on the Business Day immediately preceding the
          Remittance Date in any month in which any such principal or interest
          payment has been deferred, make a Monthly Advance in accordance with
          Section 4.03, in an amount equal to the difference between (a) such
          month's principal and one month's interest at the Remittance Rate on
          the unpaid principal balance of such Mortgage Loan and (b) the
          amount paid by the Mortgagor. The Servicer shall be entitled to
          reimbursement for such advances to the same extent as for all other
          advances made pursuant to Section 4.03. Without limiting the
          generality of the foregoing, the Servicer shall continue, and is
          hereby authorized and empowered, to execute and deliver on behalf of
          itself and the Master Servicer, all instruments of satisfaction or
          cancellation, or of partial or full release, discharge and all other
          comparable instruments, with respect to the Mortgage Loans and with
          respect to the Mortgaged Properties. Upon the request of the
          Servicer, the Master Servicer shall execute and deliver to the
          Servicer any powers of attorney and other documents, furnished to it
          by the Servicer and reasonably satisfactory to the Master Servicer,
          necessary or appropriate to enable the Servicer to carry out its
          servicing and administrative duties under this Agreement.

          Notwithstanding anything to the contrary in this Agreement, the
          Servicer shall not waive any premium or penalty in connection with a
          prepayment of principal of any Mortgage Loan, and shall not consent
          to the modification of any Mortgage Note to the extent that such
          modification relates to payment of a prepayment premium or penalty."

10.  The words "Lehman Capital, A Division of Lehman Brothers Holdings Inc.,
     owner of residential Mortgage Loans, Group No. 1997-ALSI, and various
     Mortgagors" in the first paragraph of Section 3.03 are hereby deleted and
     replaced with the following: "Norwest Bank Minnesota, National
     Association, as master servicer for SASCO 1998-4."

11.  is further amended by deleting the word "and" at the end of clause
     (viii), replacing the period at the end of clause (ix) with "; and", and
     adding the following immediately after clause (ix):

          "(x) any principal prepayment penalties received in connection with
          the Mortgage Loans."

12.  is amended by deleting the word "and" at the end of clause (v), replacing
     the period at the end of clause (vi) with "; and", and adding the
     following immediately following clauses (vii) and (viii):

          "(vii) to reimburse itself for Monthly Advances of the Servicer's
          funds made pursuant to Section 7.03, it being understood that, in
          the case of any such reimbursement, the Servicer's right thereto
          shall be prior to the rights of the Trust Fund;

          (i) to reimburse itself for unreimbursed Servicing Advances, and for
          any unpaid Servicing Fees, the Servicer's right to reimburse itself
          pursuant to this subclause (viii) with respect to any Mortgage Loan
          being limited to related Liquidation Proceeds, Condemnation
          Proceeds, Insurance Proceeds, REO Disposition Proceeds and other
          amounts received in respect of the related REO Property, and such
          other amounts as may be collected by the Servicer from the Mortgagor
          or otherwise relating to the Mortgage Loan, it being understood
          that, in the case of any such reimbursement, the Servicer's right
          thereto shall be prior to the rights of the Purchaser;"

13.  The words "Lehman Capital, A Division of Lehman Brothers Holdings Inc.,
     owner of residential Mortgage Loans, Group No. 1997-ALSI, and various
     Mortgagors" in the first paragraph of Section 3.05 are hereby deleted and
     replaced with the following: "Norwest Bank Minnesota, National
     Association, as master servicer for SASCO 1998-4."

14.  All references in Section 3.11 to the disposition of REO Properties
     within a two year period are hereby deleted and replaced with a three
     year period.

15.  The first paragraph of Section 4.01 is hereby deleted and replaced with
     the following:

          "On each Remittance Date the Servicer shall remit by wire transfer
          of immediately available funds to the Master Servicer (a) all
          amounts deposited in the Custodial Account as of the close of
          business on the last day of the related Due Period (net of charges
          against or withdrawals from the Custodial Account pursuant to
          Section 3.04), plus (b) all amounts, if any, which the Servicer is
          obligated to distribute pursuant to Section 7.03, minus (c) any
          amounts attributable to Principal Prepayments, Liquidation Proceeds,
          Insurance Proceeds, Condemnation Proceeds or REO Disposition
          Proceeds received after the applicable Prepayment Period, which
          amounts shall be remitted on the following Remittance Date, together
          with any additional interest required to be deposited in the
          Custodial Account in connection with such Principal Prepayment in
          accordance with Section 7.03, and minus (d) any amounts attributable
          to Monthly Payments collected but due on a due date or dates
          subsequent to the first day of the month in which such Remittance
          Date occurs, which amounts shall be remitted on the Remittance Date
          next succeeding the Due Period for such amounts."

16.  is hereby amended by deleting the words "Remittance Date" in the first
     line of such Section, and substituting the following: "tenth Business Day
     of each month"

17.  The third paragraph of Section 5.01 is hereby deleted.

18.  The following paragraph is hereby added at the end of Section 9.02:

          "On the second Business Day of each month, the Servicer shall orally
          inform the Master Servicer and the Special Servicer as to which
          Mortgage Loans have become delinquent for a period of 61 days or
          more, without giving effect to any grace period permitted by the
          related Mortgage Note (each, a "Distressed Mortgage Loan"). No
          Mortgage Loan shall be considered to be delinquent for such purpose
          by virtue of the related Mortgagor having made payment to a prior
          servicer. Any such Mortgage Loan as to which all past due payments
          are made prior to the Notice Date shall not be considered to be a
          Distressed Mortgage Loan, and the servicing thereof shall not be
          transferred as provided below. On the fourth Business Day of each
          month (the "Notice Date"), the Servicer shall send by facsimile a
          written listing of the Distressed Mortgage Loans to the Master
          Servicer, the Trustee and the Custodian, and shall mail to the
          Mortgagor of each Mortgage Loan listed in a Transfer Notice a letter
          advising each such Mortgagor of the transfer of the servicing of the
          related Mortgage Loan to the Special Servicer, in accordance with
          the Cranston Gonzales National Affordable Housing Act of 1990;
          provided, however, the content and format of such letter shall have
          the prior approval of the Special Servicer. The Servicer shall
          promptly provide the Special Servicer with copies of all such
          notices. The transfer of servicing with respect to each such
          Mortgage Loan to the Special Servicer shall be effected by the
          Servicer not later than fifteenth day following the applicable
          Notice Date (the "Transfer Date"). By the Business Day immediately
          following each Notice Date, the Servicer shall provide the Master
          Servicer, the Special Servicer, the Trustee and the Custodian with a
          certification (the "Transfer Notice") listing the Distressed
          Mortgage Loans.

          At least five Business Days prior to the Transfer Date, the Servicer
          shall deliver, with respect to the Distressed Mortgage Loans listed
          on the related Transfer Notice, to the Special Servicer all
          Servicing Files, and to the Special Servicer and the Master Servicer
          a preliminary loan level tape or other electronic media (a "Report")
          in form reasonably acceptable to the Servicer, the Master Servicer
          and the Special Servicer. Within two Business Days following such
          Transfer Date, the Servicer shall deliver such Report in final form
          reasonably acceptable to the Master Servicer and the Special
          Servicer, and commensurate with generally acceptable industry
          standards, detailing the amount of any unreimbursed Monthly
          Advances, Servicing Advances and accrued and unpaid Servicing Fees
          on a loan level basis. Should the Master Servicer or the Special
          Servicer desire a loan level tape or other electronic media
          containing information which is not readily extractable from the
          Servicer's servicing system, the Servicer shall diligently cooperate
          to make such loan level data available to the Master Servicer and
          Special Servicer. In addition, at least five Business Days prior to
          the Transfer Date, the Servicer shall transfer to the Special
          Servicer any funds held in an Escrow Account or Custodial Account
          relating to the Distressed Mortgage Loans listed in the related
          Transfer Notice. Upon the successful completion of the transfer of
          servicing for Distressed Mortgage Loans, the Special Servicer will
          reimburse the Servicer for any unreimbursed Monthly Advances,
          Servicing Advances and accrued and unpaid Servicing Fees with
          respect to such Distressed Mortgage Loans which have been properly
          documented. The Servicer shall be paid, from the Custodial Account,
          a termination fee of $25.00 for each Distressed Mortgage Loan
          transferred to the Special Servicer.

          In connection with the transfer of any Distressed Mortgage Loan, (i)
          the Servicer will be responsible for servicing the Distressed
          Mortgage Loan until the effective date of transfer of servicing to
          the Special Servicer, but shall have no right or obligation to
          service such Distressed Mortgage Loan from and after the effective
          date of the transfer of servicing to the Special Servicer, (ii)
          notwithstanding clause (i) above, the Servicer shall include the
          Distressed Mortgage Loan in its monthly remittance report pursuant
          to Section 4.02 for the month in which such transfer is effected and
          shall be obligated, subject to Section 7.03, to make the Monthly
          Advance with respect to such Distressed Mortgage Loan on the
          Remittance Date in the month in which such transfer is effected, in
          each case, regardless of whether the Remittance Date occurs before
          or after the effective date of such transfer, (iii) the amount of
          Monthly Advances to be reimbursed to the Servicer by the Special
          Servicer hereunder shall include the Monthly Advance described in
          clause (ii) above regardless of whether the Servicer makes such
          Monthly Advance before or after the effective date of such transfer,
          (iv) the Servicer shall, no later than the end of the month in which
          such transfer is effected, provide to the Special Servicer loan
          level information (in the loan level tape or other electronic media
          or other agreed-upon form) regarding the Distressed Mortgage Loan
          during the month of such transfer as may be necessary to enable the
          Special Servicer to provide such information in its remittance
          report for the next following month, and (v) the Servicer shall not
          be entitled to the Servicing Fee with regard to any such Distressed
          Mortgage Loan for the month in which such transfer occurs."

19.  The following paragraph is added at the end of Section 10.01:

          "Neither the Master Servicer nor any successor servicer (including
          the Owner and the Master Servicer) shall be liable for any acts or
          omissions of the Servicer or any predecessor servicer. In
          particular, neither the Master Servicer nor any successor servicer
          (including the Owner and the Master Servicer) shall be liable for
          any servicing errors or interruptions resulting from any failure of
          the Servicer to maintain computer and other information systems that
          are year-2000 compliant."

20.  The following words are hereby added after the words "Attention: Rick
     Skogg" in Section 10.06(ii):

          "with a copy to:

          Aurora Loan Services Inc.
          601 Fifth Avenue
          P.O. Box 1706
          Scottsbluff, Nebraska  69361
          Telephone No.:  (308) 635-3500
          Telecopier No.:  (308) 632-4287

          Attention:  Lee Trautman"





                                                                     EXECUTION

                               SERVICING AGREEMENT

     THIS SERVICING AGREEMENT (this "Agreement"), entered into as of the 1st
day of April, 1998, by and between LEHMAN CAPITAL, A DIVISION OF LEHMAN
BROTHERS HOLDINGS INC., a Delaware corporation ("Lehman Capital"), and OPTION
ONE MORTGAGE CORPORATION, a California corporation ("the Servicer"), recites
and provides as follows:

                                    RECITALS

     WHEREAS, Lehman Capital has conveyed certain Mortgage Loans identified on
Schedule I hereto (the "Serviced Mortgage Loans") to Structured Asset
Securities Corporation ("SASCO"), which in turn has conveyed the Serviced
Mortgage Loans to First Union National Bank, as trustee (the "Trustee") under
a trust agreement dated as of April 1, 1998 (the "Trust Agreement"), among the
Trustee, Norwest Bank Minnesota, National Association, as master servicer
("Norwest," and, together with any successor Master Servicer appointed
pursuant to the provisions of the Trust Agreement, the "Master Servicer") and
SASCO.

     WHEREAS, Lehman Capital desires that the Servicer service the Serviced
Mortgage Loans, and the Servicer has agreed to do so, subject to the
conditions set forth herein.

     WHEREAS, Norwest and any successor Master Servicer shall be obligated,
among other things, to supervise the servicing of the Serviced Mortgage Loans on
behalf of the Trustee, and shall have the right, under certain circumstances, to
terminate the rights and obligations of the Servicer under this Servicing
Agreement.

     NOW, THEREFORE, in consideration of the mutual agreements hereinafter set
forth and for other good and valuable consideration, the receipt and adequacy
of which are hereby acknowledged, Lehman Capital and the Servicer hereby agree
as follows:

                                    AGREEMENT

     1. Definitions. Capitalized terms used and not defined in this Agreement,
        -----------
including Exhibit A hereto and any provisions of the Seller's Warranties and
Servicing Agreement dated as of September 30, 1997, between Lehman Capital and
the Servicer (the "Warranties and Servicing Agreement") incorporated by
reference herein, shall have the meanings ascribed to such terms in the Trust
Agreement.

     2. Servicing. The Servicer agrees, with respect to the Serviced Mortgage
        ---------
Loans, to perform and observe the duties, responsibilities and obligations
that are to be performed and observed under the provisions of the Warranties
and Servicing Agreement, except as otherwise provided herein and on Exhibit A
hereto, and that the provisions of the Warranties and Servicing Agreement, as
so modified, are and shall be a part of this Agreement to the same extent as
if set forth herein in full.

     3. Master Servicing; Termination of Servicer. The Servicer, including any
        -----------------------------------------
successor servicer hereunder, shall be subject to the supervision of the
Master Servicer, which Master Servicer shall be obligated to ensure that the
Servicer services the Serviced Mortgage Loans in accordance with the
provisions of this Agreement. The Master Servicer, acting on behalf of the
Trustee pursuant to the Trust Agreement, shall have the same rights as the
"Purchaser" (as defined in the Warranties and Servicing Agreement) to enforce
the obligations of the Servicer under the Warranties and Servicing Agreement.
The Master Servicer shall be entitled to terminate the rights and obligations
of the Servicer under this Agreement upon the failure of the Servicer to
perform any of its obligations under this Agreement, as provided in Article X
of the Warranties and Servicing Agreement.

     4. No Representations. Neither the Servicer nor the Master Servicer shall
        ------------------
be obligated or required to make any representations and warranties regarding
the Serviced Mortgage Loans in connection with the transactions contemplated
by the Trust Agreement and issuance of the certificates issued pursuant
thereto.

     5. Notices. All notices and communications between or among the parties
        -------
hereto shall be in writing and shall be deemed received or given when mailed
first-class mail, postage prepaid, addressed to each other party at its
address specified below. Each party may designate to the other parties in
writing, from time to time, other addresses to which notices and
communications hereunder shall be sent.

     6. Governing Law. THIS SERVICING AGREEMENT SHALL BE GOVERNED BY, AND
        -------------
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, NOTWITHSTANDING
NEW YORK OR OTHER CHOICE OF LAW RULES TO THE CONTRARY.

     7. Counterparts. This Agreement may be executed in any number of
        ------------
counterparts, each of which when so executed shall be deemed to be an
original, but all of which counterparts shall together constitute but one and
the same instrument.

     8. Reconstitution. Lehman Capital and the Servicer agree that this
        --------------
Agreement is a Reconstitution Agreement, and that the date hereof is the
Reconstitution Date, each as defined in the Warranties and Servicing
Agreement.

     9. Notices and Remittances to the Master Servicer. All notices required
        ----------------------------------------------
to be delivered to the Purchaser or the Master Servicer under this Agreement
shall be delivered to the Master Servicer at the following address:

        Norwest Bank Minnesota, National Association
        11000 Broken Land Parkway
        Columbia, Maryland  21044
        Attn:  Master Servicing Department, SASCO 1998-4

     All remittances required to be made to the Master Servicer under this
Agreement shall be made to the following wire account:

        Norwest Bank Minnesota, National Association
        Minneapolis, Minnesota
        ABA#:  091-000-019
        Account Name:  Corporate Trust Clearing
        Account Number:  3970771416
        For further credit to: 13423000, SASCO 1998-4

     10. Errors and Omissions Insurance. The Servicer shall keep in force
         ------------------------------
during the term of this Agreement a fidelity bond and a policy or policies of
insurance covering errors and omissions in the performance of the Servicer's
obligations under this Agreement. Such fidelity bond and policy or policies
shall be maintained with recognized insurers and shall be in such form and
amount as would permit the Servicer to be qualified as a FNMA or FHLMC
seller-servicer. The Servicer shall be deemed to have complied with this
provision if an affiliate of the Servicer has such errors and omissions and
fidelity bond coverage and, by the terms of such insurance policy or fidelity
bond, the coverage afforded thereunder extends to the Servicer. The Servicer
shall furnish to the Master Servicer a copy of each such bond and insurance
policy upon receipt thereof by the Servicer.


     Executed as of the day and year first above written.

                                           LEHMAN CAPITAL, A DIVISION OF
                                               LEHMAN BROTHERS HOLDINGS INC.


                                           By:
                                              ------------------------------
                                              Name:  Joseph J. Kelly
                                              Title: Authorized Signatory


                                           OPTION ONE MORTGAGE CORPORATION



                                           By:
                                              ------------------------------
                                              Name:
                                              Title:




                                    EXHIBIT A

             Modifications to the Warranties and Servicing Agreement

1.   All references to "Pool I," "Pool 1," "Pool 2" and "Pool II" in the
     Warranties and Servicing Agreement are hereby deleted.

2.   The definition of "Custodial Agreement" in Article I is hereby deleted
     and replaced with the following:

          "The custodial agreements relating to custody of the Serviced
          Mortgage Loans among: (i) U.S. Bank Trust National Association, as
          Custodian, First Union National Bank, as Trustee, and Structured
          Asset Securities Corporation, (ii) Chase Bank of Texas, N.A., as
          Custodian, First Union National Bank, as Trustee, and Structured
          Asset Securities Corporation, and (iii) Norwest Bank Minnesota,
          National Association, as Custodian, First Union National Bank, as
          Trustee, and Structured Asset Securities Corporation, each dated as
          of April 1, 1998."

3.   The definition of "Monthly Advance" in Article I is hereby amended by
     adding at the end of such definition the following: ", but only to the
     extent that such amount is expected, in the reasonable judgment of the
     Company, to be recoverable from collections or other recoveries in
     respect of such Mortgage Loan."

4.   The definition of "Servicing Advance" in Article I is hereby amended by
     adding, immediately after the phrase "but not limited to, the cost of",
     the following: "transfer of servicing of Delinquent Mortgage Loans to the
     Special Servicer pursuant to Section 11.02, and".

5.   The word "or" at the beginning of line twelve of the second paragraph in
     Section 4.01 is hereby deleted and replaced with a comma, and the
     following is hereby added immediately following the words "change the
     final maturity date on such Mortgage Loan" in such line twelve: "or
     permit any alteration, substitution or release of any collateral for such
     Mortgage Loan."

6.   The fourth and fifth paragraphs of Section 4.01 are hereby deleted in
     their entirety and replaced with the following:

          "Notwithstanding anything to the contrary in this Agreement, the
          Company shall not waive any premium or penalty in connection with a
          prepayment of principal of any Mortgage Loan, and shall not consent
          to the modification of any Mortgage Note to the extent that such
          modification relates to payment of a prepayment premium or penalty."

7.   The following paragraph is hereby added at the end of Section 4.02:

          "Notwithstanding the foregoing, in the event of any conflict between
          the provisions of this Section 4.02 and the provisions of Section
          11.02, the provisions of Section 11.02 shall control."

8.   The words "the Purchaser of Conventional Residential Adjustable and Fixed
     Rate Mortgage Loans, Group No. 1997-LB/00" in the first paragraph of
     Section 4.04 are hereby deleted and replaced with the following: "Norwest
     Bank Minnesota, National Association, as master servicer for SASCO
     1998-4."

9.   is amended by deleting the word "and" at the end of clause (vi),
     replacing the period at the end of clause (vii) with "; and", and adding
     the following immediately following clause (viii):

          "(viii) to reimburse itself for Monthly Advances of the Company's
          funds made pursuant to Section 7.03, the Company's right to
          reimburse itself pursuant to this subclause (viii) (x) being limited
          to amounts received on the related Mortgage Loan which represent
          late payments of principal and/or interest respecting which any such
          advance was made, related Liquidation Proceeds, Insurance Proceeds,
          Condemnation Proceeds, REO Property, and such other amounts as may
          be collected by the Company from the Mortgagor or otherwise relating
          to such Mortgage Loan, and (y) if, after the liquidation of such
          Mortgage Loan, such amounts are insufficient to reimburse the
          Company for such unreimbursed Monthly Advances, the Company may seek
          reimbursement from other amounts in the Custodial Account, it being
          understood that, in the case of any such reimbursement, the
          Company's right thereto shall be prior to the rights of the
          Purchaser;

10.  is further amended by adding, immediately after the words "unreimbursed
     Servicing Advances" in the first line of clause (ii), the following: ",
     and for any unpaid Servicing Fees,".

11.  The words "the Purchaser of Conventional Residential Adjustable and Fixed
     Rate Mortgage Loans, Group No. 1997-LB/00" in the first paragraph of
     Section 4.06 are hereby deleted and replaced with the following: "Norwest
     Bank Minnesota, National Association, as master servicer for SASCO
     1998-4."

12.  All references in Section 4.15 to the disposition of REO Properties
     within a two year period are hereby deleted and replaced with a three
     year period.

13.  The first paragraph of Section 5.01 is hereby deleted and replaced with
     the following:

          "On each Remittance Date the Company shall remit by wire transfer of
          immediately available funds to the Master Servicer (a) all amounts
          deposited in the Custodial Account as of the close of business on
          the Determination Date (net of charges against or withdrawals from
          the Custodial Account pursuant to Section 4.05), plus (b) all
          advances, if any, which the Company is obligated to make pursuant to
          Section 7.03, minus (c) any amounts attributable to Principal
          Prepayments, Liquidation Proceeds, Insurance Proceeds, Condemnation
          Proceeds or REO Disposition Proceeds received after the applicable
          Prepayment Period, which amounts shall be remitted on the following
          Remittance Date, together with any additional interest required to
          be deposited in the Custodial Account in connection with such
          Principal Prepayment in accordance with Section 7.04, and minus (d)
          any amounts attributable to Monthly Payments collected but due
          (giving effect to Section 5.03) on a due date or dates subsequent to
          the first day of the month in which such Remittance Date occurs,
          which amounts shall be remitted on the Remittance Date next
          succeeding the Due Period for such amounts."

14.  is hereby amended by deleting the words "Remittance Date" in the first
     line of such Section, and substituting the following: "tenth day of each
     month, or if such tenth day is not a Business Day, the immediately
     preceding Business Day,"

15.  is hereby deleted in its entirety.

16.  is hereby amended by adding the following immediately after the words
     "other ancillary fees" in the second paragraph of such Section: ", but
     not including any premium or penalty associated with a prepayment of
     principal of a Mortgage Loan."

17.  The second paragraph of Section 11.02 is hereby deleted in its entirely
     and replaced with the following:

          "On the second Business Day of each month, the Company shall orally
          inform the Master Servicer and the Special Servicer as to which
          Mortgage Loans have become delinquent for a period of 61 days or
          more, without giving effect to any grace period permitted by the
          related Mortgage Note (each, a "Distressed Mortgage Loan"). Any such
          Mortgage Loan as to which all past due payments are made prior to
          the Notice Date shall not be considered to be a Distressed Mortgage
          Loan, and the servicing thereof shall not be transferred as provided
          below. On the fourth Business Day of each month (the "Notice Date"),
          the Company shall send by facsimile a written listing of the
          Distressed Mortgage Loans to the Master Servicer, the Trustee and
          the Custodian, and shall mail to the Mortgagor of each Mortgage Loan
          listed in a Transfer Notice a letter advising each such Mortgagor of
          the transfer of the servicing of the related Mortgage Loan to the
          Special Servicer, in accordance with the Cranston Gonzales National
          Affordable Housing Act of 1990; provided, however, the content and
          format of such letter shall have the prior approval of the Special
          Servicer. The Company shall promptly provide the Special Servicer
          with copies of all such notices. The transfer of servicing with
          respect to each such Mortgage Loan to the Special Servicer shall be
          effected by the Company not later than the fifteenth day following
          the applicable Notice Date (the "Transfer Date"). By the Business
          Day immediately following each Notice Date, the Company shall
          provide the Master Servicer, the Special Servicer, the Trustee and
          the Custodian with a certification (the "Transfer Notice") listing
          the Distressed Mortgage Loans.

          At least five Business Days prior to each Transfer Date, the Company
          shall deliver, with respect to the Distressed Mortgage Loans listed
          on the related Transfer Notice, to the Special Servicer all
          Servicing Files, and to the Special Servicer and the Master Servicer
          a loan level tape or other electronic media containing loan set-up
          information in form reasonably acceptable to the Master Servicer and
          the Special Servicer. Within two Business Days following such
          Transfer Date, the Servicer shall deliver a final trial balance
          (subject to special claims), in form reasonably acceptable to the
          Master Servicer and the Special Servicer, and commensurate with
          generally acceptable industry standards, detailing the amount of any
          unreimbursed Monthly Advances, Servicing Advances and accrued and
          unpaid Servicing Fees on a loan level basis. Should the Master
          Servicer or the Special Servicer desire a loan level tape or other
          electronic media containing information which is not readily
          extractable from the Company's servicing system, the Company shall
          reasonably cooperate to make such loan level data available to the
          Master Servicer and Special Servicer. In addition, no more than two
          Business Days after the Transfer Date, the Company shall transfer to
          the Special Servicer any funds held in an Escrow Account or
          Custodial Account relating to the Distressed Mortgage Loans listed
          in the related Transfer Notice. Upon reasonable compliance by the
          Company with the provisions of this Section regarding the transfer
          of servicing for Distressed Mortgage Loans, the Special Servicer
          will reimburse the Company within five Business Days for any
          unreimbursed Monthly Advances, Servicing Advances and accrued and
          unpaid Servicing Fees with respect to such Distressed Mortgage Loans
          which have been properly documented. Notwithstanding anything herein
          to the contrary, the transfer of servicing for Distressed Mortgage
          Loans shall not require the payment of a termination fee therefor.

     In connection with the transfer of any Distressed Mortgage Loan, (i) the
     Company will be responsible for servicing the Distressed Mortgage Loan
     until the effective date of transfer of servicing to the Special
     Servicer, but shall have no right or obligation to service such
     Distressed Mortgage Loan from and after the effective date of the
     transfer of servicing to the Special Servicer, (ii) notwithstanding
     clause (i) above, the Company shall include the Distressed Mortgage Loan
     in its monthly remittance report pursuant to Section 5.02 for the month
     in which such transfer is effected and shall be obligated, subject to
     Section 7.03, to make the Monthly Advance with respect to such Distressed
     Mortgage Loan on the Remittance Date in the month in which such transfer
     is effected, in each case, regardless of whether the Remittance Date
     occurs before or after the effective date of such transfer, (iii) the
     amount of Monthly Advances to be reimbursed to the Company by the Special
     Servicer hereunder shall include the Monthly Advance described in clause
     (ii) above regardless of whether the Company makes such Monthly Advance
     before or after the effective date of such transfer, (iv) the Company
     shall, no later than the end of the month in which such transfer is
     effected, provide to the Special Servicer loan level information (in the
     loan level tape or other electronic media or other agreed-upon form)
     regarding the Distressed Mortgage Loan during the month of such transfer
     as may be necessary to enable the Special Servicer to provide such
     information in its remittance report for the next following month, and
     (v) the Company shall be entitled to its pro rata portion of the
     Servicing Fee with respect to any such Distressed Mortgage Loan for the
     month in which such transfer occurs, based on the number of days in such
     month that precede the Transfer Date."

18.  The following paragraph is added at the end of Section 12.01:

          "Neither the Master Servicer nor any successor servicer (including
          the Purchaser and the Master Servicer) shall be liable for any acts
          or omissions of the Company or any predecessor servicer. In
          particular, neither the Master Servicer nor any successor servicer
          (including the Purchaser and the Master Servicer) shall be liable
          for any servicing errors or interruptions resulting from any failure
          of the Company to maintain computer and other information systems
          that are year-2000 compliant."

19.  The following definition is hereby added:

          "Prepayment Period: With respect to the first Remittance Date, the
           -----------------
          period beginning on the Cut-off Date and ending on May 1. With
          respect to each subsequent Remittance Date, the period commencing on
          the second day of the month immediately preceding the month in which
          such Remittance Date occurs and ending on the first day of the month
          in which such Remittance Date occurs."



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