diff not sorted, it's still screaming need to find new ring and pinion stat!
only scare we had was alternator stopped charging and things started getting mighty dim mid stage, but we finished that stage and found the wire was falling from the terminal on the alt, so fixed that and off we went again
[edit] steveo - still an a12, the engine build over x-mas will be an a14, can't wait for more power on the hills