Recently had an increasingly bad knock when going from accelerating to decelerating and having recently changed all engine mounts the driveshafts seemed the likely culprit. Removed them tonight to find a large amount of slack in the inner joints and fitted a pair of cheap J&R joints with a supposed 2 year guarantee. Now all knocking has gone but whoa under full throttle it feels like the car is going to vibrate itself to bits! Looks like you get what you pay for with these. And also a load of wasted time. Having checked all usual suppliers, ECP, GSF, AVS etc no one seems to list or be able to get inner joint for 6 speed models. Anyone know where to get inner joint or complete shafts of reasonable quality? Don't fancy paying near enough Â£600 to Audi for a pair of driveshafts!