Hi, AUDI 90 Typ89Q NG: I noticed yesterday on a long cross-country trip that my clutch has been packing very rough since the change of the leaking pick-up cylinder and that every time it is coupled in the low gears, there is a clearly perceptible, dull noise from the drive train. Does the clutch at Quattros always come so rough or did I just get used to it that it used to reach softer before, when there was always some air in the system?! CU. Markus