After looking at the one he took apart I decided that they werent meant to be taken apart.
I went to work with a gunsmith my first couple years in college, and he wouldn't work on them...only way he would take them in was if I worked on them. First one I ever touched came in disassembled with most of the parts in a shoe box, took me the better part of a couple hours. I remember it required some specialized tools the smith had fabricated, and was an absolute PITA. I ended up working on several, but never took another one apart after I left the gunsmith.
I still have a couple of the CBC/FIE copies.
