C-beam endplates

I am assembling my C-Beam Actuator and it seems like the lead screw and NEMA 23 mounting location are off. When I use the anti-backlash nut, the 8mm lead screw needs to flex in order to tighten down the nut. Initially I was thinking I'd just shim the nut, but when I mount the NEMA 23, it appears to be where the offset is. It appears that it's about 1/16" off toward the extrusion on both plates.

I can throw it up on a Keyence inspection system after work tomorrow, to determine how bad it is....

C-beam endplates