Hydrojunkie,

thats the idea except that the Klotz based fuel is very expensive to do trial-&-error with. What I am contemplating is making a batch of fuel with no nitro what-so-ever. If I continue to have overheating problems with that, the problem is somewhere else. I can always add in nitro later if I want.

No ways I am running rich. Like I wrote, the LSN needle is supposed to be rich at 1.5 turns out from carb closed and this is at 1.7 turns (intentionally). The HSN is supposed to be rich at 2.5turns out. But I have had this problem of overheating at 4 turns out, so neither of those are the reason. I am considering flushing my carb with fuel just to get out any grit that is stuck. Again issue is one of the screws that holds the carb has stripped and I dont want to risk the other. As yet there are no air leakages, engine cuts when the kill switch is pressed

Again its not under propped, 14x8 is the manual recommended prop.

Will test out the non-nitro fuel and then report. May be one of my fellow fliers has fuel with no nitro

Ameyam