Well, had a couple of guys looking at my new (well, new to me) 1999T S4 Avant... under heavy load, 2nd and 3rd make a clunking noise. "clunk. clunk. clu-clu-clunk" It can be felt through the gearlever and sounds like a CV joint type clunk. It also makes the same noise, but only a single cluck, when I accelerate, hold it in gear and then take my foot off the gas. Sounds like something is loose or catching... it has a QST quickshift on it - don't know if it make much difference. We looked at the linkages and it's fine. The drive shafts and CV joints are fine too. Any ideas? I am praying for it not to be a major g/box issue. Or anyone know of a gearbox specialist in the Berkshire/Oxfordshire area? Thanks for any help - I'll hold off on crying like a baby until I really know what it is!