After my drone crashed because the battery was wrong, his gimbal was twisted on the horizon. enter a configuration and when I place it in -4 everything works ok! but I want it to be like before it looked good at zero. I already tried to re-establish factory values, clean the gimbal by blowing air, calibrate the IMU, calibrate compass I only have to install an old firmware but I doubt it will be solved. How can I repair the cardan? I leave some photos.