help on holes

[gamble]

I think the anti back lash nuts are in need of being replaced. How can I tell for certain if it's the ones on the X or Y the axis that need to be replaced? Rathe not replace ones that don't need to be replaced for now.

[weldguy]

Use your calipers to measure which direction the circle is out of round on and that will be the axis that needs the work I assume. From the picture it looks like left to right is narrower than bottom to top. Good luck.