This is not really a solution for two reasons. First, it is impractically difficult for someone with many transactions. Second, it would void the TurboTax accuracy guarantee.
The way to fix this problem is to do rounding consistently on both the Federal and California forms.
By the way, in the past I've seen similar issues where rounding was done one way for regular tax and another way for AMT, resulting in the introduction of discrepancies in carryover amounts that build up over the years and cause innumerable headaches.
