Daver, get it out of the plane and onto a proper test stand where you can see whuz happenin. Either too rich or too lean will make it kick the prop. Most times if lean it will quit instantly, if too rich it will knock first, smoke heavily and die slowly then quit. Do not exceed 4,000 rpm for the first ten minutes. After that 10 minutes set the HS needle at 3 turns out or wherever it will run without the glow battery.