@PEZ3D interesting issue.
I regard that the printer “setup” is focused on aesthetics, which, from what I read from experts, conflicts with tight accuracy or tolerances.
I value accuracy and tolerance more than good looks, as I use the printer primarily for functional prints.
I can say that with a 0.4mm nozzle, I never notice.
Yet, after the typical flow rate calibration procedure for each filament spool, I start a fine-tuning procedure using tolerance tests until I get a 0.05mm fitting.
Also, I set my outer wall print speed to 60 mm/s when tolerance is critical. With a 0.6mm, I had some difficulties getting accurate dimensions in the three axes; it seems to have improved in the last months, maybe by software and firmware updates.
Yet, after reading about others’ experiences, I need to recheck to be sure I am still achieving such an outcome.
I read about a similar issue months ago; in that case, the BL support team solved the issue by providing accurate instructions to fine adjust the belt tension. If I find it, I will share it.
@RPMiller, I look forward to knowing more about BL support solutions for your trouble ticket.