Sorry for dragging up an old thread. I have a stuck caliper and it has worn one pad down to the bone. Tires Plus told me the caliper piston is rifled and has to have a special tool to turn it as it is compressed. I am used to doing brakes, but haven't done ABS before. The link to the helms manual above is out of date. Is there any problem compressing this caliper with ordinary tools?

Thanks.