OK, I'm calling Bull on this thread.
WBR said (p. 178, Ruger and His Guns
) that "one winter (1979-80) I was down in Florida on the Titania
and I had a lot of spare time, sitting there on the deck. One day, for some reason or another, I was thinking: Was it really impossible, as General Hatcher had publicly stated, or was there some possibility if I abandoned some basic assumptions and found others that were more productive? And I said, all right; I won't make any rules to myself about what's good enough, or artistic enough, or sturdy enough, or what. I'll just take what I can get and see how it looks.
And, by God, it emerged very quickly. I had to make space for a different transfer bar, and instead of having a slot inside the sidewall of the frame, I put a recess in the side of the hammer............."
So, what I see here is that there's no way to "retrofit" the NM Lockwork into a OM revolver. (We all knew that already, but I thought I'd include the common knowledge within my post.) It took many more years of effort before WBR's genius solved the problem.
Hmm, what if the grip frame was removed from the so-called early conversion gun. If it had the R mark, which was NOT utilized until after the introduction of the "conversion kit" program, early/mid 1982, would that convince anyone that the gun was converted post 1982?
What about the statements made by Factory Personnel? I've witnessed them making gross errors in the past. A request to speak to a Supervisor or a "written request" for data has always provided me with what certainly appeared as the truth.
Just My Humble Opinion,