I think turning down your rates and turning up your expo helps. Am I right on that? I wouldn't know for sure being that I still am on a gyro, I have flown NerdNic 800 series spitfire which will go 120MPH, but like I said that was on a gyro. If the jet goes that fast it will have to have a wooden or aluminum spar to keep the wing from breaking, I put a smaller spar then specified in the NN Spitfire and the wing folded up when straightening out from a really fast dive.😢