Thanks, Dave. I hope a lot of the folks will note that e-mail address.
I worked on a lot of those old guns. I found it easy to spend hours making parts, filing and fitting, running up hours of time trying to fix a gun that would be worth $25 in perfect condition.
I finally gave up after too many instances of giving a customer the bill and having him tell me to keep the old POS as it was not worth what I charged to fix it. This after I had told him what it would cost and been assured that he wanted the gun fixed with "price no object" for a family heirloom, or some such. I am out of the business now, but I would have to give the same advise to any gunsmith. Even if the money is not important, IMHO the frustration factor is just too high.
Lots of luck.