Hello there I have a bit of a stupid question. I have been helping a mate out with his 146 as it has failed its MOT on pads and the back box no longer being attached to the exhaust pipe by anything more than fresh air. After a lot of swearing the new exhaust system was in as are the front pads but the rears are being a pain. I cant seem to be able to compress the rear pistons. I have disconnected the handbrake cable but I cant figure which way to turn them or if i need a special tool as the two screwdriver technique that has done me well for years wont work because of the milling on the top of the piston nor can I find a direction arrow. Any help will be gratefully received as he is bussing it to work at the moment and not very happy.