UPDATE:
well, what can i say....all 4 bloody wheels were wayyyyyyyyyyyy out of balance! fronts were 70/65g off..rears not as bad but still out by over 30g (they were on the front)
what bloody muppets at the tyre place. Can be sure I'm using another branch next time, and may even go back to Daventry to have it rebalanced by RSD. most impressed by their balancing machine..it tells u exactly where to put the weights on the inside of the rim!!!
Vibration totally gone now.
Danny also got his Supertracker alignment gizmo on the car...and it's spot on. It was aligned by TT Shop in May so it should still be straight. So no probs there.