I am having a problem with my z-plate. I run the file, the router does exactly what it suppose to. I have set safe clearance to raise to .500 and stop. Before I run a file I have to zero z then MZ -.500 then zero Z again . Now I can run the file. I thought I could start the file from the safe clearance of .500 and the software would compensate for the .500. Do I have a problem or is just a step I need to do? Hope explained this clearly.