arm

Hello everyone, Today i was flying my p4p and I hit a tree with a alltitde of less than 2m and the drone hit the ground on the back, the propereller was all good but the gimbal yaw broken. The gimbal can not turn right or left, sometimes shakes and sometimes doesn't move, I don't know if I...

Does anyone know if the DJI screw replacement set comes with the grub screw for the yaw arm? and if not what the size may be? I cant seem to see it there but apparently its "all the screws needed" from what ive been able to attain from google.