Bend sends 14bit resolution data, try hooking up a midi monitor to see how short the left range is of the right, should be consistent irrespective of bend amount on that test, it could be a physical obstruction or a calibration issue(most likely) i’m sure there was a calibration thread on day one AK release on here, sounds harmless unless joystick is obstructed in full range, also check on a midi monitor it zeroes when released
From memory
Right 8191
Mid 0
Left -8192
Ie 16384 vals, right mat end 92 and left -91, can’t recall
Some monitoring might show up absolute where mid is 8192 and left 0, so you want to do some maths on the ranges either side to know what the root cause is