This morning, I pulled out the 520 on a job site and had a new problem. On startup, the E90 camera started beeping, 4 long and three short beeps and looked like it was trying to run a gimbal calibration with small movements and small rotations. Luckily, I had an E50, so I recorded what I wanted to record. That worked fine. Looking elsewhere on the site, it sounds like a Camera IMU problem. While nothing happened to the drone or camera since the last time I used it, what am I looking at for getting it fixed?