Step Size issues- movement larger than expected

LightBurn Hardware Compatibility
2

  1. The Home command, when issued, tells your machine to seek the limit switches to establish a repeatable origin. Without limit switches and homing enabled, issuing the home command will give you an error.

  2. Read https://github.com/gnea/grbl/wiki/Grbl-v1.1-Configuration#100-101-and-102--xyz-stepsmm
    and How are steps calibrated?
    You can edit the actual step length settings in the Edit => Machine Settings dialog in LightBurn.