I have a warlock 7 guitar rack that I stow my guitars on. I have been told that the rubber on them can attack the finish ion Gibsons. I placed a towel on the bottom to protect my SG but didn't think about the neck leaning on the rubber up top. Funny thing is the only discoloration is on the binding. It has yellowed on that "touch" spot.(after only 2 days) Anyone else have this problem and is there a safe way to take the yellow out? (I know....Pepsodent.) 
