I put new camera and new shell on a P3P and it will not take off. Goes up 2ft and lands. I have calibrated gimbal ,compass. Everytime it goes 2ft up I have to turn off and restart then nothing happens. Green lights flashing like normal. Tried Litchi that won't let it take off at all. Only thing I didn't do is software update but it says it's ok. Also tried relinking controller didn't help. Camera is brand new also. Thanks for any help