I think you should hit the store and look at a new one and see if your paper will stick to it. Can you return it? Yes I can feel the frustration. Yes it sucks but id investigate it to see whats doing it. The pad or the paper. Hell id take the whole sander to the store with your paper discs and id be ripping into the new stuff and trying it out. Then looking for the pad and trying out your discs on it. I think I repeated myself? yep! Sure did.

Jeff Vandenberg aka "Woodsconsin"