I ran my first job, a waste board with a series of counterbores with through holes in the center of each. Seemed to start out well, but as it progressed, the holes were misaligned. I assume this is due to some free play.
How do I know if the back lash is set properly?
Any rotation of a lead screw that does not result in a linear motion indicates excessive backlash. I don’t know if the software can compensate for backlash but I would try working the backlash adjusters first. In a perfect world you would adjust these to eliminate play without adding drag. Real life will require a little compromise.
No the software cant. If you grab say the x axis on either end and push pull it if it moves at all tighten that side up a little and try it again. If it still moves more than a mm or 2 tighten it up a little more. Talking a 1/4 turn then try it again. Do that with all of them. This is the best way to test it.
Could be a slipping grub screw on the stepper motor coupler.