Don absolutely he agreed on the frame. In fact he started laughing when we examined the frame - "they don't make 'em like that anymore" for a reason - too costly!! The undercut where the grip panel tops insert into the frame sort of blew his mind.
This was the first time I have ever even partially disassembled the toggle, and the first time I have inspected a breech block with all parts removed. We inspected that part because it is easier to strip all parts from it, rather than the frame or the entire toggle for example. To my eye it seemed even more complex than I had imagined perviously. I'm not a machinist but I am woodworker and even doing one in wood would tax my skills to the limit.