Gaz, one thing to check buddy, make sure the timing hasn't rotated out of phase.
Unlikely but this happened to me at Barrow in the practice. After stripping and cleaning the motor I hadn't tightened the three sensor timing screws enough. They only need nipping but seemingly I didn't give them enough which allowed the vibration to move it out of the tolerance band. Samething happened, steering fine but a clicky sort of sound and no rotation.
Long shot but worth a look.
|