Watch the smoke trail. if it's not putting out smoke, and a healthy amount, (when it's new), you're probably running it too lean.

This is one of those things where it's very difficult to diagnose without being there. I was tought by jim Ivey, and he had this "feel" that was uncanny. he could hear things and such that nobody would catch.

Did you lube your cam bearings? if not, if it started ok then gradually started knocking and died, there could be your problem.

Set the reg flush, turn the needle 1 1/2-3/4 turns out and crank the engine. let it run. goose the power up to about 2500rpm and let it run for a while, chin off. Then throttle it a bit and see what it does. if it stumbles and it's spewing thick smoke, it's rich. if it comes up with no smoke, it's lean. if it slowly comes up with a change in pitch (like hammering), it's REALLY lean. What you're looking for during this stage is slightly rich. Knowing how we do 2 strokes, it's VERY slightly rich and it's hard to find. You have to get some fuel through it before you throttle it up strong. the prelube has to be flushed out. You need to let it cool 30 mins or so between runs. Then crank it, let it idle around 2000-2200 for 30 seconds. Throttle up fast and see what it does. this is the tell tale on the finer pump setting. When that's right, take it slowly to full. Using a tach, turn the needle clockwise SLOWLY to find the RPM peak. Then back off about 300 RPM and go fly. But you need a few tanks through it first to be safe, especially with a brand new plane.

I do realize that this is not exactly what you've heard elsewhere, and I'm not saying this is right or wrong. it's just the way I was tought and it has always worked very well and served me flawlessly for 2 years. The only times this didn't work were when something else was wrong (like a leaking head gasket for instance).

Good luck and most of all, be patient with it, it's fussy right now. Once you get it set you won't ever have to touch it again.

-Mike