Made up a spindle square similar to the one sold by Edge . Was off .005 in x, adjusted that out easy peasy. checked for nod .0065 . hmmm what to do? didn't have much time left to spend but thought about it a minute decided to check column bolts of course no allen wrench at home to fit. will bring one home from work tomorrow and a torque wrench. Decided to try one more thing, loosened the back base bolts holding it to the stand now at .003. I did not crank the bolts for the stand very tight to start with so as an experiment I tightened them till the lock washers just reached full crush then the nod started to increase after that. Those back two bolts through the base are far enough forward that there is no base casting touching the chip tray and I think you can flex the base pretty easy. Will play with that a bit more tomorrow. Tried the front bolts and no noticeable indicator movement. anyone else noticed this?