Air does'nt get in on its own,has to be a break.your's sounds like it's lost one of its pads.gives same symptoms as the piston tries to do the job of the pads.But €500,come on!pads are what?€60-100.1 hour if front,2hours if it's back ones,and that's realy pushing it.Where are you cos im moving there.the money that could be made.
caine, August 2008