Watch your prop mount, Jeff. Make sure that you are really tight with the prop nut. Four strokes can "backfire" or hiccup, which could cause the prop nut to come undone and could launch the prop on you. So, do your tuning while standing behind the engine and make sure the prop nuts (a nut and a checknut) are secure and very tight.

Jeff.. post a picture of your aircraft. Folks, he sent me a PM with a picture of this aircraft. This is one nice job Jeff is doing on this aircraft. This is gonna draw some admirers at the field, for sure!!

CGr.