Guys....
Perhaps this thread is worth exploring further.
TT is experiencing the very problem that every one of us has faced and every new entrant into BP revolver shooting will eventually confront.
The situation is that there are many examples of old revolvers on the market for which parts are now, and in some cases always have been non-existant.
We are constrained to use parts as Hawg said, from either Pietta or Uberti.
So if this thread is sustained and the result is a repaired revolver, which repair is chronicled here, then the newby who searches the forum for PR revolvers, will find it and be thus illuminated.
My experience in buying parts even from Dixie or others who say they are supplying parts specifically for ASM or some other company's revolver is that you have to fit the part. It is eminently doable and actually quite a bit of fun, but for the guy who is used to replacing a master cylinder on a 64 MGB, the picture is quite different. VTI is NOT the equivalent of J.C. Whitney because parts for 64 MGBs are not the equivalent in compatibility to parts for a 74 PR Sheriff.
So TT has a problem with the Trigger to Hammer interface on this pistol. The photos are of a pistol that is clearly worth fixing.
It may be that he doesn't need a hammer or a trigger but only a file.
I guess I am saying that there is an awful lot of expertise on this forum. I am surprised that others haven't entered the discussion.
Just reread my post and it sounds like I am griping. But I am on my second double shot of Jack Daniels so please blame Mr. Daniels as well.
As you render advice, keep in mind that TT is a very capable craftsman. It appears from past projects that there isn't much he can do.
Lets fix this pistol.