Thank you guys, I like what I'm hearing. It looks like I'm missing the little plate and screw meant to retain the lever, so I may have to hit up Ebay still. Now my question is how I tell if these assemblies have the firing pin mechanisms in them. I think when I took the breech out originally I took it out whole sale. I can post pics later to make it clear what I mean.
Also, how do I tell which model (like 99X)? The serial listing here says it was made in 1953.