I did what you said for the Y and X axis and that was ok but it would not move on the Z axis but mach 3 asked how far it moved, also it is now not operating on the G code I put in G0 Y20 X20 also when I tried a manual jog it moved a minute distance but only every time I pressed the keyboard jog button. I had a look around mach 3 but could not find what the problem is