Korg Kross 2 61 pitch bend calibration

I have a Korg Kross 2 61 with a wonky pitch bend wheel. Bending in the ‘up’ direction, the bend tops out about halfway to the wheel stop (I can see this in the MIDI data being sent). Bends in the ‘down’ direction work properly, the data doesn’t hit the minimum value until the wheel hits bottom.

Is there any kind of service mode I can get into to recalibrate the wheel? I’d rather not take the whole keyboard somewhere and get a little thing like this fixed… thanks in advance!