I measure .002 deflection at the knee when I run the Y axis between its full range. I tightened the gibs to the point where I could barely move the knee up and down the column, and measured the deflection to be the same (I loosened it after). I have also fully locked the column locks and again no difference. Is this deflection typical? Is there a solution? I have searched the forums for this topic and only found a post where someone suggested locking the column locks...