I heard of some sort of mallet that you use to whack the center of certain patterns to make them lay flat when there are a lot of seams that come together. Do you think this would help. I would NOT use a hammer from the basement (LOL). It would have to be at least a wooden mallet that is a bit wide.
I don't know the name of the one that I read about, and I think I read about it here on the board a long while ago.