The caliper is up out of the way so the piston is not involved. I can't get the pad to seat into the bracket where the keepers are located. They were also very difficult to get out of the bracket which I find unusual. My other Honda's were never like this. The pads were replaced at Honda before I owned the car. At the worst, I'll shave them down until they fit into the keepers. I suspect this is what has caused the uneven brake wear.