Virginia Business apportionment

Virginia apportionment for a C-Corp is calculated on Form 500A.  The apportionment percentage flows automatically to Form 500.  TurboTax calculates the percentage as 8 digits on Form 500A and only flows a 6 digit percentage over to Form 500.  This is resulting in a message that We need to check one more thing when I'm trying to file the return.  The 6 digit number is what Virginia asks for.  This is definitely a programming error and needs to be fixed before returns can be e-filed.  I tried to override the Form 500A numbers but TurboTax won't let me e-file with an override.  Grrrrr !!!  I need TurbuTax to fix the communication between Form 500A and Form 500.