My mk 1 had sqeaking front O/S brake so this morning I removed the old pads and discs and fitted new ones. The piston was hard to push back on the O/S caliper. Anyway after putting everything bck together I had no front O/S brake at all. I was pumping pedal and the N/S was fine but the O/S piston was not moving out of the caliper. Thougt this was odd so I had an assistant press the pedal down and I slackened bleed screw, no fluid came out. Tried same thing one the other and the fluid was coming through. I then pressed the pedal down while slackening the outlet off the master cylinder that fed the O/S caliper and fluid is coming out of the master cylinder on this outlet. The brake hose was bone dry inside and looks like no fluid been coming through it for a while. Does this mean the master cylinder is nackered? Also the brake pedal has gone quite hard.