Originally Posted by Bikeguy Joe
My best to date method without destroying them is to pry up the edge, (careful there with the screwdriver) shoot some windex in there and give them a couple of twists. After working them for a few seconds, they will slide off like magic.
I do the same thing but with rubber alcohol. It leaves no residue on the grips or I'll use the air method if I can plug the other end.