One other quick question I'm using wildcat %10 nitro fuel.... thats the highest nitro my LHS had besides 30% heli fuel (I definatly don't need the power) Anyhow I told the guy at my LHS that I had a YS45 and was wondering about the 20/20 fuel I have been hearing about, he said the 2-stroke YS should be fine on this combo, and the 20/20 really only applies to their 4-strokes.... Anyhow, should I be getting a higer nitro? like 15% or the 20/20 YS stuff?