Edge Module Hallpi TMR lost center calibration

Hey there,

Received my modded edge modules today and for the first 30 min everything was ok. Gamepad tester showed perfect center calibration and average error rate around 3%.

While testing some games out of nowhere one of the sticks lost calibration and was pushing downwards permanently. Fortunately the modding shop also bridged the two points with a flat cable so i was able to unlock the modules and recalibrate the center. Until now everything is working fine.

Just wanted to ask what caused this and if have to be concerned that it will happen again? The shop includes 2 year warranty but sending it in again is the last thing I want to do now.