RE: Jett 50 problem
I don't believe I have had a lean run, unless it leaned out too much in the air. On the flight stand once I pass the half way point on the throttle there is a trail of exhaust like you would not believe...I will pull off the muffler tomorrow and check the port opening. I am on my second plug, the first plug lasted for the entire break-in on the test stand and 2 flights before I replaced it.