I checked the head bolts so far...I'll remove the motor and check the back plate next. Should there be alot of fuel under the rocker cover?

Is it possible that I'm still running it too rich?

It idles very rough if I try to go lower than 1900...many have stated smooth idles at 1400.

On the uplines, if it were a simple 2-stroke, I would say it was lean as the rpm just fades but there is quite a bit of smoke even with the 30% LS. I have always had difficulty determining if a 170 is running too lean or too rich.

I also had problems with this motor during the break and found some swarf under the pump...I guess I'll check there again.

Any more advise is appreciated.

Colin.