I see there are two different compass part numbers: DJI-PHV-12 DJI-PHCOMP Are they the exact same compass with different legs or are they different compass'? I need to replace mine as I had a failure and it got RED hot. I was doing a calibration, and the assistant kept throwing the temperature error. I didn't think anything of it but now I know what the culprit was. I need to replace and want to buy a couple.