hi robin
after getting my car back from having the diff done i had a clunking noise from the front (posted a thread at the time
http://www.mk5golfgti.co.uk/forum/index.php/topic,13610.0.html ). after alot of messing around changing droplinks i good friend of mine who is the workshop manager of haynes popped over and asked what had been done since he had the car (1 week before vwr had it) .
i told him i had the diff done so we then went threw logical steps of removing the box . i.e drive shafts out / hubs slacked / strut slacked .
turned out that the main shock bolt (threw the hub) was loose / not even nipped up , so the strut was moving around in the hub body causing it to clunk .
very upset to say the least as i found it 2 days before a track day !
i contacted vwr and they deniied it all .