You can close the Zero Coming banner, once you do it should be gone until a new one is posted.
The thread I posted above has some of the issues…I did most of it through PM’s with Sovol.
The bands are 3mm apart, 1.5 is the Z-rod gap.
I have already replaced the Steppers, POM Screw Nuts & Z-rods. I’ve tried with & without the top bearings removed.
I even added Oldham Couplings…still have the banding.
A friend mentioned the micro steps before, but said he couldn’t figure it out with Sovol giving him specs for the parts.
I kinda gave up on trying to fix it.