was out driving today enjoying my new CC remap when all of a sudden i hear a crack and then my clutch pedal goes staight to the floor, i pull over and see a black broken clip and a white clip on the floor and theres jus no resistence in my clutch pedal, had to get towed home by the AA who said my master cylinder has siezed. does anyone kno how much these cost to fit also i heard that the slave cylinder could also be the problem, how can i tell whether its the master or slave that needs changing. thanks