To quote Professor Farnsworth, "Good News Everyone!"
So I just happened to be working on this very same issue lately too. I picked up a couple near mint 1st edition AD&D books because they were dirt cheap and I could easily replace my worn copies. Problem was they had stupid stickers. Sometimes you get lucky and they just come off but not these, no way, sticker residue was horrible.
From experience I know the isopropyl alcohol or naptha type products (essentially lighter fluid) strip the paint on matte material and only really work well for sticker residue on glossy or laminated covers. My poor
GURPS book. Anyways, I searched some book forums and other places and found many suggestions, but one that stuck out to me was an eraser. I didn't have the type they specifically recommended but I did have Hi-Polymer Eraser from Pentel. I figured what the hell.
It took a few minutes and I was careful at first but the residue just came right off and the underlying book and paint looks flawless. I can only find the outline of the sticker under certain lighting angles. I wish I had a before and after picture because I was stunned by the results.
I have a
G1 mono module with crappy sticker residue I am going to try tonight. Hopefully same great results.