I have recently purchased the batbone, love it by the way. it took me awhile but I got it to hover inside and outside.here's the thing that I try to get if it tried to give it throttle and it wants to do a backflip It Tries to Inverter itself I have the self level on. I mean it hovered in my kitchen and outside. I walked with it for a whole battery but as soon as I give it throttle it backflips need help