Engine Problems!!!!
MikeL,
I agree completely. FR, everything you've said so far leads me to believe that you're running that engine WAY too lean.
AllThumbs,
Turning that needle valve 1/4 turn is too much when adjusting. One or two "clicks" at a time.
Are you saying that you're needle valve is only open 1/4 to 1/2 turn from closed while running? Something just ain't right there.
Dennis-