My best to date method for removing the grips is with a pair of pliers. Of course it ruins them. I have also used a punch and hammer and that is waaay less destructive, but still a little harsh on the vintage grips and some of the softer ones. 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.