Does anyone have an idea as to why I keep burning up a GWS 8.4v motor on an A drive running a 2 cell LiPol? Speed controller is a Pixie 7P. When I was running an 8 cell 9.6v NiMh I could understand, now I don't know. My buddy and I both are flying mini IFOs with this set up and we both keep burning up motors.