Try Autotechnica on Calvert Lane, Hull, 01482 353369. Andy Humble is the owner (ex Audi dealer master technician) and he and Ben offer a fantastic service. I'm sure he won't charge much to do the work you need. They won Audi Driver Gold for outstanding service and I can't recommend them highly enough. I don't work for them and am not related to the owner or anything like that (just a very satisfied customer) but I feel us Audi drivers in the East Riding of Yorkshire need to know about Autotechnica instead of being shafted all the time by JCT600!