I was panning sideways during what would have been a great hyperlapse and my A2 hit a tree and fell to the ground. The only (only) damage was the port back arm snapped off right at the motor and the arm no longer fits quite right against the drone. Everything else seems to be working correctly. All I need is a replacement arm. Can I order just the arm from DJI or do I have to send it back to them for repair?