(5)[ Where any surplus is left after the adjustment made under sub-section (4), the amount of such surplus shall either be credited to the Fund or, as the case may be, refunded to the person who has borne the incidence of such amount, in accordance with the provisions of section 27 and such person may make an application under that section in such cases within six months from the date of the public notice to be issued by the Assistant Commissioner of Customs for the refund of such surplus amount.] [Inserted by Act 40 of 1991, Section 12 (w.e.f. 20.9.1991). ]