Printer noob - Can't print consistently on FFCX

[lucidpsykosis]

what does it mean when the front, back and sides feel right but the center is tight?

[jfkansas]

what does it mean when the front, back and sides feel right but the center is tight?

That is normal, the print head sags very slightly in the middle. I usually level the bed perfectly with a postit note, then every so slighty tighten each thumbscrew just a tiny amount. Do all 3 the same. But it will print fine when the print head is a little closer to the build plate.

It helps if you decrease the weight of the print head by removing the unused stepper motor at least when not in use.