I just bought a Droid yesterday with a plastic clear snap on case. The sales associate at the verizon store put it on over the screen protector that came with the droid. I want to take the case off and take this protector off and put one of the new ones on that I bought because this one is smudged up a little. I'm having trouble getting the snap on case off though and I don't want to force it off and break it. Are there any instructions for taking it off correctly?