I checked with Chris Kvale in the twin cities and he will do it for a reasonable price (rebuild with silver and remachine). I've used shims for 35+ years, but I can only get those so tight, and figured it was time to fix it once and for all. Thanks for the suggestions.
EDIT: BTW, it was interesting to check with a few shops I know of down here. One, that has been in business for quite some time, had no idea what I was talking about

I also sent an email to RRB Cycles, as Ron at least used to build custom frames, but no reply yet. I'm not originally from here, so other than Licktons, have never been to any of the bigger or old school Chicago shops and don't know much about them.