Master 08 rear brake piston re-wind direction

Hi guys, can anyone confirm which direction the rear caliper pistons rewind on the 08 Master? I have got the OS side in my turning it clockwise/right but the NS won't budge in that direction. I feared the caliper was buggered but on googling for a new caliper I came across some threads saying the NS is anticlockwise or left handed. Any advice most appreciated.