This is probably a stupid question, but how the hell do you get a "sticky" sticker off a paperback without damaging it? I bought a copy of The Colorado Kid at the local used bookstore (this was a new copy) and although the one on the front came off with no problem, the one on the back is a sticky mother and will only come off in pieces, and leaves a residue behind. If I'd known that I would have purchased it on Amazon (no sticker!) but since I have the book I'd like to see if I can get the annoying sucker off. Suggestions?