Anybody ever rebuilt ie put new bearings into the rear diff of a quattro? I've replaced the rear seals twice now and i'm still getting an oil leak on one side. There seems to be too much play in the side that is leaking when I move the output shaft/cv up and down, so am assuming the diff bearings need replaced and re-shimmed. I've got the Elsawin instructions on how to do it but that uses alot of special VAG tools. Could it / can it / has it been done without the special tools?.