An eligible lender may reissue a loan which was made under this section before July 1, 1987, or under this section as in effect prior to October 17, 1986, in order to permit the borrower to obtain the interest rate provided under section
1077a
(c)(4) of this title. A lender offering to reissue a loan or loans for such purpose may charge a borrower an amount not to exceed $100 to cover the administrative costs of reissuing such loan or loans, not more than one-half of which shall be paid to the guarantor of the loan being reissued to cover costs of reissuance. Reissuance of a loan under this paragraph shall not affect any insurance applicable with respect to the loan, and no additional insurance fee may be charged to the borrower with respect to the loan.