there are a number of problems that can affect the clutch other than the clutch itself, first have you free play at the pedal? if so double check that you can push the slave cyl arm back into the cyl, if OK then run engine full revs select 5th gear drop clutch, engine should stall within a 2 or 3 seconds if not your clutch is weak/failing, if you cannot push slave back then you have hose/slave/master cyl probs, Rick