I agree with meanmom. I am not a longarmer but almost always piece my backs. I have one longarm lady who says, every time I bring her a pieced back, "Oh, you should have made two quilts!" I have offered to pay extra but she refuses. I tell her to do the best she can (as far as centering) and she does pretty well! But if I have a design that is asymmetrical it doesn't show as much if she is off a little.