Theres no adjustment it on a hydraulic circuit not cable, The clutches are normally quite high on the B5 when the pressure plates wear in, mine did this after a couple of days of fitting it.
Easiest way to tell is put it in 4th gear whilst stationary with the handbrake on take the revs to about 3k and slowly pull the clutch if stalls its ok if the engine carries on to rev then the clutch is slipping, if the clutch is worn you may burn it out so dont do it for long once foots off the pedal drop the clutch straight after if its still revving.