Most parts were assembled on a leveling table using two part epoxy.
Screws tend to pull parts out of alignment and so I epoxied things while they were being held true in a jig.
I then added some screws here and there after the epoxy had hardened overnight.
The Y axis uprights were trued to the Z axis using a dial indicator.
I am about .5mm out from one end of the table to the far end, not bad for wood.
After I add the grooved oak clamp down top, the table surface height will come up another .75 inches.
After the machine is able to run under computer power, I can level the top surface using router bits.
It's quite smooth feeling and the Rotozip tool seemed to have a bunch of power.
I need to change the top bolt down surface to a slotted type. It's a pain to thread studs down into the pre drilled holes, but it's working fine for now.