Interesting idea, and some good advice here. One thing no one mentioned, I think, is what about really out of whack quilts? If there is no reasonable way to make a quilt square, what do you do? I've seen some, and in fact made some myself, where something was wrong in the middle of the quilt somewhere so "squaring it off" would mean cutting into some of the blocks along the edge. I'd be afraid to work on something like that, and you might not realize it when you first take the job. Just curious how you'd handle that.