The parts guy at toyota said he never sells them so I doubt many people actually do renew them bolts. I’m sure my PFC or EBC pads instructions said not to file the pads, and to file the carrier instead. But I know what you mean, the paint isn’t exactly uniform on the pads. Last time I tried to stops the squeaks, I had to file the stock pads to stop them from sticking coz rust had bubbled up under the paint. All fun and games lol