Well, I found my problem... It was a lack of fuel pressure ! At idle, the fuel was going back towards the tank ! I just plugged one of the exhaust tubes of the Pitts muffler. When we plugged it with a finger, it idled down to 1400 rpm and did great ! Im puttin it back to factory settings now, and will post my results tomorrow. Later I want to put one of those 300 dollar gas engines from Tower Hobby's on it. (32 cc's I believe) Thats the ticket !