UC400 ETH controller, UCCNC software

I don't know, I can turn the ball screws by hand from end to end..... what more could cause the X axis to seemingly bind, not get noticed by the 822, and then immediately unbind in reverse direction?

Next step is GOPRO an entire cut in the air, and see if it jams unloaded under inertia or no jam and program telling it to move?