I've been working on a game table for a while now. and I was gluing down the pieces of foam core poster board to a big ol' 48" by 38" masonite board and the moisture from the glue caused the masonite to warp into having a big lump in the board. And I was wondering if anyone had ideas on how to try to unwarp it? at the moment it's just sitting on my garage floor covered in weights :P