Well, I've received some much appreciated information, suggestions, and points of contact- many thanks to one and all- I'm going to leave it 32-20, and should it be required will have the barrel relined ( a very reasonably priced option), additionally will probably have it re-blued, so I've quite a lot o hours of wet-sanding the pits and surface anomalies out of the parts. In dis-assembly and evaluation of parts the gentleman that I got the rifle from had started to modify it to .38 by enlarging the cartridge guides and stops to accommodate the larger diameter cartridge. Numrich has them... but if anyone should know someone parting out a 32-20 Mod 92, I'd be interested in talking to them for those parts.