I just performed what seemed to be the simple task of replacing the clutch master cylinder in my C5 Z06 & now the clutch pedal won't budge. The damn thing is rock solid. Everything came apart & went back on relatively smooth. The reservoir is full of fluid & there are no leaks anywhere. What could be the problem? The unit is a GM stock replacement & it came already filled with fluid which I thought was odd. Does anyone have a reason why the pedal wont budge? It moves very easy when the master cylinder rod is not connected, so the pedal itself is fine. Any input will be greatly appreciated. Thanks!