"Talk to your pro, but if you have other forms that change the 1040 you prepare yourself, I expect the preparer will charge you something to revise the 1040. They also probably aren't going to put their name to something that they didn't work on, so if you insist on preparing some forms yourself, they probably at a minimum would refuse to guarantee their work."
@Opus 17 Yeah, that's a good question. I will have to see what he says.
