Crashed the drone. Now the gimbal won't move on it's own and won't calibrate (stops at 10%). Physically the drone looks fine - couldn't even tell it was crashed. The gimbal moves freely but won't move on start up on it's own. The camera works fine. Software has been updated through DJI Assistant. Took the drone halfway apart. The cable looks fine between drone and camera. Have not taken camera or gimbal apart. Has anyone run into this problem and fixed it themselves? Could it be the gimbal motor? a circuit board?