Just an update to this if anyone else is suffering from calibration problems.
After persisting with manual calibration and using Dxtweak to correct the issues, I finally gave up and opened up the Honeycomb Alpha.
It was out of warranty anyway so I had nothing to lose.
It’s fairly easy to open up, just 8 longish screws on the underside and then the case pulls apart.
I squirted some electrical contact cleaner into the potentiometer at the end of the shaft and tightened up a few screws that seemed a bit loose.
For the pitch movement there is no rotating potentiometer, instead there is a long metal bar (opposite side to the circuit board).
I’m sure there’s a name for this but essentailly it’s just a long variable resistance track.
I squirted this with contact cleaner as well and moved the shaft in and out a few times.
Checked all the electrical contacts and wiring looked secure (solder joints etc…)
Re assembled and ran the manual calibration routine, followed by a windows calibration and so far it’s back to working normally again.
If I open it up again I’ll try and remember to take some photos.
Looks like it would be eay to replace the potentiometer if I could find the correct spec, but I’m not sure if it would be so easy to replace/find the metal track that controls the pitch movements.