I finished my screw and nut for the 9a. I used bearing mount locktite on the screw as well as pinning it. I'm giving the locktite a day to setup before reassembling the crosslide. I thought I had a pic of the finished nut...I'll have to post more pics tomorrow.
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I spent about an hour grinding a shim, installing it, removing it, grinding another 0.00025 until I got the fit I wanted on the dial. Everything works nice. About 0.001 backlash.
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