Update,
I believe the issue to be a few small things that added up to the right side Y locking up.
First, there are no loose bolts anywhere on the right side Y. I have not checked the wires inside the rail but will if the trouble continues.
Second, while my right Y screw rotates the end opposite the motor has a pronounced wobble whereas the left side does not.
Third, while I was squaring the rails after replacing the X rail, I noticed something. I had one pivot screw in the front foot of my right Y (left side was still screwed down to the table). I sent X to the back and saw the rear foot move as the X rail would travel. The foot would move left and right as the X would travel front to back. I marked the extremes of the movement and got about 6mm of movement. I decided to split the difference and screwed it down at the 3mm mark.
It seems to be working better now. Backlash is tolerable and it has not locked up with the joypad yet.
I am thinking of replacing the thrust washers with thrust bearings.
I will keep posting if more issues come up.
Thanks again to the forum and OF support for the help.