My P4P Gimbal motor yaw not stable after VPS calibration

[issyeddy]

My P4P crashed and gimbal motor yaw's neck dislocated and body arm opened...I got them repaired but when I wanted to fly my P4P, I noticed Gimbal motor yaw not stable...the neck keep rotating to both left and right....I checked YouTube and I got a video that anytime the drone crashes....and repairs, I have to do some VPS calibration....I did that, the problem still persists...what could go wrong? I only have pictures of the repaired drone