Zenmuse GH3 Roll Level Issue

[flitelab]

Just setting up a Zenmuse GH3 and seem to have the roll off by a few degrees. Seems this is a bit of a known issue?

Is there a recommended approach to fix this so the default position is level on the GH3 version?

 

[MombasaFlash]

Zen-GH3 Roll axis is easy-peasy to correct. Loosen the two hex screws on the rear roll motor shaft clamp and rotate the Roll/Tilt tray in the required direction. Do it with the Zen unpowered in very, very, VERY small steps. Use a fine tipped marker to make a small reference mark on the roll motor shaft before you start.

 

[flitelab]

Thanks. That is what I was thinking by looking at it but wanted to confirm is someone had indeed done that.
I assume all the actual sensors are within the motor itself and not based off an IMU on the camera plate itself correct?