I am swapping out radios for my 51 Buick. The replacement radio has buttons that are a bit abused. The old radio I have has buttons that are in great shape. I would like to switch buttons but cannot figure out how to easily remove them. I cannot believe that the radio has to come completely apart to do this. I opened it up and took a look but holy cow it looks like a lot of messing around to get at them from inside. I am afraid to apply too much force to pull them off from the front. Anybody know how to do this easily?