I got tired of the paper method and adjusting the screws by the auto-leveling results as I could never get them to be consistent. Now I used mechanical level indicator and got these consistent values indicating that the bed is tilted to the right/left?
To my suprise it can actually print something like this but what would cause these values? My suspicion is that the Z axis is sagging but I would like to get some opinions before completely reassembling the printer.
Ah, I didn’t realize the black sensor could do that.
Have you tried calibrating it with something covering the plate? Maybe painter’s tape? Can the plate spin 180 and calibrate there, to make sure it’s not different somehow on the right and left?