I recently purchased a Milltronics Partner 1 mill. I finally got it up and running. I tried to interpolate a hole and it came out as an elipse. One way it was in tolerance and another measurement was out of tolerance by .01. Is there a way to tighten up gibs on this machine? I know that it has box ways on precision rails and didn't know if there was a way to take play out of the axis. Can anyone help with this question?