Jim, I checked all that you have suggested even before I ever flew the plane and all was good. I broke the engine in on 0% (3 gal) with the cowl off then started flying it with the cowl on still slightly rich. I was getting 8400 with a Zinger 18-8 but not quite yet unlimited vert. Everything was working perfect up until I tried a Bambula 20-10 prop and then everything went out of wak. It would spit fuel out of the carb and wouldn't go past 5000 rpm so I started testing and tuning and that's when I adjusted the low end. I even took the High speed needle out all the way to check for debris and all I found was what looked like factory applied thread lock for the banjo fitting assembly. I reasembled everthing and went back to the Zinger 18-8 and things were much better but now I have the transition prob, to make a long story short!