I used expect a lifetime ago to reliably talk to a bunch of very strange ISDN modems.

https://www.tcl.tk/man/expect5.31/expect.1.html

I think something like expect also exists for more modern languages, but tcl is still easy enough to learn (just a little unusual, everything is a string)

Hmm, I’m using PSN from FF. Problem with am extension, maybe?

I had inconsistencies in my print on an Ender 3pro with sprite, no kind of manual or ABL level fixed it.

It turned out one of the eccentric v nuts at my gantry was too tight, so it didn’t run smoothly - the right side of the gantry lagging to the left. (Ender 3pro has only one z screw)

So check for mechanical problems, lubrication of the z rod etc.

For the V wheels - they need to be adjusted so thight that you can just turn them manually with one finger then one ministep thighter.