I got my Phantom in early December 13. I had maybe 30 or more flights with the stock camera mount and it was rock steady. Performed perfectly. I was not happy with the stills and video so I ordered a FPV system and gimbal. Now it doesnt have that steady hover like it did new and I have had a flyaway and today I was flying about 5 feet high about 20 yards out and it just flipped over and went down suddenly. I am not using wifi my fpv is 900mgz so that shouldnt cause problems. It is a 1.1.1. I have done the compass calibration and Naza assistant says it does not need IMU calibration. I have completely lost confidence in it now. Also I was flying in a 200 acre field. No buildings or anything just a test flight. I dont know what else to do.