Thanks for the feedback I bought a new compressor off ebay had it fitted today and now I have a very unusual problem that hopefully somebody can offer a solution to.
The mechanic fitted the compressor and tested it, all running nice and quiet, put it into "Lift" position and he got the upper limit exceeded, the amber car symbol is flashing but it won't go into any other mode now, so it's stuck looking like a Q7! I got my VAGCOM plugged in to calibrate and the controller is refusing the security access key constantly, even after a battery reset!
Any ideas how I can get the thing down????