Is this beyond the pale? Recently got a Neptune 3 pro and have been having issues. Anyone have some tips? Is this resolvable? Can a bed for these be replaced?
I uncommented the Gcode line to use this matrix now which I didn’t before. But still having a lot on inconsistencies.
Not having leveling screws sucks, but check how Z gantry is installed. It might be not perpendicular, also left and right Z rods can be used to level your X. There is also option to shim bed/frame (think placing washer or aluminium foil between two parts to increase height) Id try to get it <1 mm, but I believe ABL should be able to compensate even your numbers anyway.
Btw are you sure your ABL is working? Do you see Z axis moving while printing single layer?