I recalibrated, and haven't had the issue since. I still seem to have a bit of a clicking on the upwards tilt, but it goes down smoothly. I tried it at least 15 times, with no issue.
Still going to open it and examine for dirt/ relube whatever I can see that looks like it'll benefit from it, just need a spare moment with my shop empty, which is hard to find now that the drift season is upon me.

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'10 X5 35d- 279k mi, deleted and DUDMD stage 2, daily and tow vehicle
'01 330i- Drift car: SLR Super angle, BC coils- keep it simple
'07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years