I managed to get RAC warranty to pay for replacement of both front shocks and both valves with used parts (bought from a forum member, cheers btw) and the labour for replacing parts fitted at an indy and getting Bradford Audi to do regas. Was without car for about 5 weeks, but it handles worse than when it went! and has now in the last week or two developed pretty worrying rattles from front suspension. The rear shocks are solid and just bounces all over the place and the front sounds like a bag of spanners! Don't think the indy knew what they were doing (and probably not Bradford Audi either if the rest of the Synter group is anything to go by). I suspect they over-pressurised it and have damaged the 2 new front shocks.
Think I'm going to look to part-ex the thing and cut my losses
