Rich,
We reloaded the software onto a new PC and the problem with skipping steps has been eliminated. The g-code is now cutting the parts on the x and y axis's, and the z is mostly working except, on each pass the z raises slightly so by the end of the cut, the cutting tip is way up in the air. It's as if the x axis on the mill is at about a 30% angle. Is there a setting where I can tell mach 3 where '0' on the z axis is at more than one point of the cutting table?