I’ve had to replace the master clutch cylinder on my Volkswagen bora twice in the last 6 months, My Mechanic cannot figure out why. There's plenty of brake fluid, no air locks etc. the problem starts off with the clutch only returning 3/4 of the way, and when I drive for a wile it will return fully, but after approx 2 weeks the problem gets worse and worse. Its a 2002 130BHP TDI 6 Speed Gear box Bora. The only fix for this problem at the moment is to replace the master cylinder but I’m not convinced that this is addressing the route cause of the problem. Any help would be appreciated.. Thanks in Advance Pat Joe!