Just serviced the pilot brakes for the first time. Noticed that the\ninner pad wore faster that outer on passenger's side. Tried to take\nout sliding pins. One came out easily. The one with a rubber ring at\nthe tip took quite some force. It would appear that the rubber ring\nhas swollen for some reason and it seals the sliding pin hole with\nforce. Not sure why it did that since the lubrican is the original\nfrom factory (This is my first brake service). I could file down the\nrubber, to make it fit more loose, or I could take if off permanently.\nDoes anyone know what is its purpose?