backflips, wish i was even close to doing that only thing i can think of is maybe something to do with the tail loosing the power to keep it locked in. i have a 401 in my falcon and if im up kinda high, when i start to bring it down sometimes i kill the power alittle to much and the tail will start to slow down so much it doesnt have enough force to keep the tail straight. if it cant be because of this, i hope someone with alittle more experience can help ya. good luck.