I also have redstuff pads. Installed them a couple of months ago with EBC's turbo grooves. Did a track day couple of weeks ago and managed to do 1 lap. After that they were completely gone, pedal soft and no braking power. Took it to my local dealer and they said that the pads and discs are good, but there was air in the system. They took the air out, but the pedal still feels soft (thinking it might be the master cylinder leaking). Just ordered better brake lines and brake fluid. Hope it helps.