What's a good adhesive remover for painted surfaces? I want to remove all of the stickers from my pick up truck, including what I think are the cheesy letters. The stickers were not much of a problem, but the letters are proving to be pretty difficult. It's a GMC if that helps. The letters have this sticky foam stuff on the back of them. I don't want to screw up my paint. Any tips? Any products like goof off that might work?