Dennis,

Thanks for that: sort of goes against the grain growing up with cast iron set-ups. Do you use full throttle on an un-run engine? If so, for how long do you run before stopping to allow the engine to cool?

I've been following the recommendations of Just Engines who have supplied all of my recent engines. They say start rich at 1/4 throttle then 1/2 et cetera. I have to say that I have experienced no problems following their advice but, then again, none of my recent ABC engines are that old.

I appreciate your observations,

Cheers,

Mick.