If you do haveodd behavior in the movement of the axes, translationsystematic print at some point in one direction, this could be incorrect values of the backlash of offending axis.
This situation may raise after an automatic calibration where are the values of backlash other than 0.
The paramatri by backlash compensating for the games that you can create in time between pulley and belt. Are generally very low and, when they are activated, you have to go against tests to see if the values are correct.
To disable the backlash and then restore the proper functioning if there were truly of backlash to compensate, just take the following commands from GCODE in control BOX:
M810 X 0 Y0 Z0
At this pointrerun the Z0 and flatness.