I flew 5 batteries today in between rain and wind. Enjoyed every moment. I flew my 450 FB and 450FBL. On the last flight I decided for the first time to go into IU because the wind had begun to blow a little strong. I flew around, no problem. The fear of nose in flying now is a thing of the past. I was really enjoying. I landed and switch the tx from IU back to normal flight mode. The helicopter did not leap off the floor but it rose up about four feet and then went back down again without any input at all. Strange. Just wonder if anyone had any idea of what happened. In normal mode throttle curve is 0,47,70,70, 70 and IU 85,85,75,85,85. No damage just very surprised LOL. Cheers