I have had my P2 with H3-3D for a few months. The 1st month I spent reading manuals, the forums here and ll the videos I could consume. My plan was learn to fly then add the camera and gimbal. All was good, added prop guards and had several successful flight days, only 1 tip over on the first day. I set it up in NAZAM mode. Now I am ready to remove the guards and add the gimbal and camera but first I wanted to install the wider longer legs. Thats were it all went wrong.. I installed the compass on the new legs as low as it would go, not perpendicular but close, without stretching cable. No gimbal, calibrated controller and compass. Flight test was awful, hovering was about a 30 ft TBE and J hooking. Would seem to get better with time. I then decided to put the original legs back, compass in original location, re calibrate same symptom. I also noticed the decent was not the 2 m/sec, but really fast, quit scary. I then did a firmware upgrade from 3.02 to 3.04, an advanced IMU calibration, compass and controller calibration, compass number about 1400. Still same thing and had my first crash, no damage. I was checking straight flight and it J hooked and on deceleration to hover it headed for a tree. Sorry for long post but wanted to provide all the details. Any ideas on getting my P2 back to the way it was.