If I can ask someone to print a file that I have (.stp) I would greatly appreciate that. I will pay for all material, time and shipping if someone is interested.

Looks like someone was a good boy this year.

t seems reducing your extruder acceleration and jerk settings will impact overall print speed and prevent over-extrusion at the perimeters of solid fills and narrow, which I have always seen in my prints. XY Jerk settings do noticeable impact motion when the accelerations are low.

It turns out that the extruder motor mount was cracked (maybe I over-tightened it). Even bobbing a little, it was printing pretty well, and I found an upgraded version in the GitHub, so it's good as new now.