Your suggestion is a good one, so let's set that aside for the moment.
Looking just at the technical aspect of the question, I do not believe that correcting entries on the Federal Carryover *Worksheet* is actually an override. Unlike a calculated field on a form with an override, I don't believe inputting a different value than was transferred from last year on a worksheet would prevent efiling. In retrospect, I should not have used the word "override" in my original comment.
