Gladiator Evo OTA twist calibration problem

[InvaderZim]

Hello,

since today the NXT Evo with Omni Throttle Adapter loses the calibration of the twist axis after a few minutes.

I have of course set everything to default and recalibrated and also tested the current firmware.

After each recalibration it works normal for a few minutes, after a while it starts that the right deflection instead of 65535 decreases more and more and the middle shifts further to the left.

The Evo is connected directly to the USB port of the computer
Any idea what this could be?

[fallout9]

First minute of this guide shows how to take out the twist module; at the top of it there's a magnet - please check if it's fixed in place.

[InvaderZim]

jupp, the magnet is firmly seated

[fallout9]

Could you post a pic showing the magnet under the board? (just take the left shell out)

[InvaderZim]

unfortunately it took a while.
Here are 2 pictures, I hope you see everything.