Delta Printer: After Calibration X and Y Axis are slightly different
I think that you probably need to adjust the following two parameters in the Marlin firmware, in configuration.h:


MANUAL_HOME_Z_POS, and;
DELTA_SMOOTH_ROD_OFFSET


See my answer to Delta printer nozzle not moving square with a perfectly level bed (as if the bed is bent... but it isn&#39;t).