MR1 Head jiggle? [SOLVED]

Doing the final lash inspection on the machine after assembly and I am getting some play in the head stock. I have a dial indicator in the spindle pressed up against the vice baseplate. Checked the play on the X ballscrew by pulling/pushing directly on the screw itself and I get the normal few 10ths of jiggle. However, if I pull/push on the headstock mount casting I get about .0015 of jiggle in both X directions. I have confirmed that all exterior bolts are tight.

Measuring against the ball nut with the indicator on the carriage I get ~.0005 of spring back.

Can someone go and run this test on theirs to see if they get the same results? Is there some internal bolts I need to tighten up to take out this slop?

Got this fixed. The 8 bolts holding the spindle carriage to the rails weren’t tight from the factory which allowed the whole spindle to rock left and right.

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just built my machine and noticed the same play in the head. thanks for the post.