just finished repairing a broken wire from a crash in a tree, it had broke the 4pin connector. the repair went well, we feel, and everything checked out on startup for a test flight. satellite indicator was back, battery indicator, gimbal was was working, 9 satellites locked. (new props) after a few minutes of idling, went to take off and the phantom rolled over backwards, breaking a few props. UGHHHHH came inside, removed the props, did a full calibration, restarted, did a new compass calibration, all looking good, same thing happens... flops over backwards. now i am thinking i have a damaged motor? any ideas? the initial crash wasn't violent, no gimbal separation other than the 4pin connector. when running without props, it sounds fine. i did not have somebody hold the phantom to try to feel which way it was going to go, but not so sure i need to as it obviously wants to flop over backwards.. help!!!!!