Unfortunately my new iPad has to be replaced at the genius bar. I had already applied a power support crystal protector to it. The replacement ipad came in and I'm going in tomorrow to exchange mine. What's the best timing and method to salvage a screen protector? Is it better to take it off before I return it and then reapply in the comfort of my home? Or should I take it off at the store and just apply it right there in the store? I'm hoping to minimize dust during the reapplication and not have to shell out $$$ for another one. Thanks!!!!