Overpayments and underpayments
(A) If more or less than the correct amount due under an agreement entered into pursuant to this subsection is paid with respect to any payment of remuneration, proper adjustments with respect to the amounts due under such agreement shall be made, without interest, in such manner and at such times as may be required by regulations prescribed by the Secretary.
(B) If an overpayment cannot be adjusted under subparagraph (A), the amount thereof shall be paid by the Secretary, through the Fiscal Service of the Treasury Department, but only if a claim for such overpayment is filed with the Secretary within two years from the time such overpayment was made.