I have my father's SW 38 Special CTG that he carried as a police officer in the '50s. Gun is in great shape, but dad had large hands and taped the square butt grip with an old type electrical tape, not plastic (there was none back then like the plastic stuff we have today). The grip is walnut and is checkered. There is a residue I need to remove from the wood. I'm wondering if anybody can provide me with advice on how to get that miserable, sticky tape off the grip without damaging the walnut grip. In a way I hate to take the tape off the gun, but it's mine now and I plan to clean up the revolver. Much sentimental value with this gun as he won many competitions at the police range.