Neil,

you have your lathe running yet? A TB rebuild would be a good project. Bore out TB a tad to remove wear area, make new butterfly, make delrin bushings for shaft. I had a go at it a while back, was fun :)

alistair

On 2012-06-12, at 11:31 PM, neil n wrote:

>  It may simply be a worn throttle shaft
>  (video: http://www.youtube.com/watch?v=aEGAgefVyQY ) affecting ability to
> get an accurate throttle valve switch setting, but the way I have the
> switch set now, (hair past specified max of 0.10 mm)  I know it closes at
> idle every time, engine cold or warm.