Yeah did the soak and shizz and its been happy for a good while. Its started being a bit stroppy with neutral/gears so I thought i'd put in a new cable (correct one) and it was ok for about 20 miles then lost slack etc so re-adjusted and again happy for a few miles then no slack or gear changes again grr.
Good to know about the worm drive cheers for that
Why cant you live round the corner Bibs