I was changing my brake pads. The front went on without a hitch. The rear is being a pain in the ass. I can get the caliper off but can't get the caliper piston to go in at all in order to get the new pads on. I've tried a pry bar and a large C-clamp. The c-clamp busted and the pry bar didn't do any good.

Do any of you guys have any ideas?

Thanks in advance.