[99AUXR]

All done now just need brake lines, robert so your saying dont upgrade the master cylinder by its self? upgrade the booster and master cylinder, I dont get how the booster would affect brakes being left on. Bigger master cylinder pushes more oil down the lines for bigger brakes so is pretty much a must. However the booster only amplifies the pressure you exert on the pedal to the master cylinder? I know your right as you have felt the issue.

EDIT:Okay so the rod that connects the master cylinder to the booster is slightly longer and doesnt allow the compensating port to be opened.