LUCKY13, I have adjusted the backlash in the past, and continue to do so. The problem is the nut for the x-axis nearly completely wore out to the point that there were hardly any threads left inside of it. I've got a lot of miles on this mill
Perhaps if you only need the screws, you'd be willing to part with the nuts? No big deal in any case, I've been getting by with doing all my machining in the y-axis lately, it's frustrating, but I'm still making chips.

I saw that thread on the acetyl nuts, and may go that route later. Right now I just need to get my mill running again so I can get some work done.

Thanks