Neat approach there Bill, but sadly the lug on mine goes into a blind hole in the slide and it would involve modification of the slide itself.

I actually measured the screw accurately last night and its actually 7/16" not 3/8", although if I am remanufacturing it makes little difference. What matters is finding some leadscrew of around that size and a matching tap for the nut at a reasonable price.

I have decided that the screwed in section I previously suggested would be hard to manufacture as I have no means to thread it at the moment. So I am going with the split nut and screw idea previously discussed