(1) If:
(a) a * franking assessment has been amended (the first amendment ) in any particular; and
(b) the Commissioner is of the opinion that it would be just to further amend the assessment in that particular so as to * reduce the assessment;
the Commissioner may do so within a period of 3 years after the first amendment.
(2) The Commissioner reduces a franking assessment if the Commissioner amends the assessment by doing one or more of the following:
(a) increasing the * franking surplus (including from a nil balance);
(b) decreasing the * franking deficit (including to a nil balance);
(c) decreasing * franking tax payable.