Well I ran the Homelite 25cc (glow version) some more. I built a new test stand. I was able to tune it more. Still have the Supertiger .90 Carb on it. I like the Idea of being able to set the needles for a wide variety of fuel. I am now ready to do the Gas/glow fuel test. The only thing I don not like is a bad vibration at about 1/4-1/3 throttle. Top RPM and Idle seem pretty smooth. Maybe I will check crank for balance somehow. Any Ideas? thanks Capt,n[:-]