I would run a couple of tanks on the ground and reset the hi/lo needles, digi tach is helpful too. check your plug, I run OS F's. The Wildcat Curtis Youngblood is $15 a gallon here at the LHS, reason is, it runs way too hot in heli engines, I have a Rappy 50 w/ an OS 50 Hyper, CY runs 20 deg hotter, not good. I still run Coolpower Heli in my Rap. That is why the CY is so cheap, if you wondered. Like I said, make sure you have great air flow and run rich.