Has anyone else had this problem. I have built my first C-Beam machine using the Arduino Uno and the Adafruit Stepper Driver. I have made all my settings referencing the GRBL settings JPG provided on the Openbuilds C-Bean build section... i.e. step/mm =200. All works as expected except the Z axis. It is moving at twice the distance. I set the z step/mm=55 and that corrected the translation distance. Have I incorrectly configured something or has anyone else seen this issue. Also on another note, I am using Grbl Panel, and you are unable to change the Grbl settings and have it update the Arduino board (has to be accomplished using the Arduino terminal). Maybe this functionality only works with the CNC x-pro as shown in the tutorial video on the C-Beam build page.