Bought CNC router and it has automatic Z measure probe. I see many video online show how to set it up on older version it working great, however older version not except my register key. Therefore I download the newest version MK1 CNCUSB Controller, everything working great, but the problem I have now is Tool measure doesn't work. the machine is move down touch the probe and kept going, it doesn't retract. Anyone know which parameter I have to select so the machine retract once tool is touch the probe? Thanks.