Man, what a pain. T nut worked loose and of course not where I could fit my hand in. Dismantled z and x, rebuilt z . because it never ends,my lead connection kept letting go.(rubber tube) couldn't get the clamp tight enough for some reason. Then for same unknown reason it worked.
NOW, I noticed that the bit drags about an 1/8 maybe even 1/16 inch before z lifts .WTF? I run $h, move to project zero, reset zero,run file. Bit heads for first point and a moment later the z goes up. What / where should I start to look? Am I too close to top? Thinner paper for a spacer?
Table is level now. I was off .008 across x axis.