I just bought a new steel 6" faceplate. It screws onto my Grizzly G0766 (powermatic clone) lathe fine all the way up to the flat area at the back of the spindle. Using magnetic base and dial indicator I get 8/1000 runout at the outside edge of the faceplate. This is runout that is not caused by the spindle. Is this too much? If so I want to return it during the 30 day return period. I did clean the spindle threads and faceplate with lacquer thinner first to remove dirt and machine oil.