Helios,
Thanks for the pix and video. I'm studying it! BTW., the lens in your picture is not EXACTLY what I have, right? It's a similar lens? Again thanks to all for good tips. I"m scouting out a tool kit.
There are a few differences since mine come from a Topcon and yours from a Konica, but for all practical things, they're both Seikosha-MXL.
These leaf shutters were used by several camera manufacturers, not just for rangefinders but also with folders and some TLRs.
Got plenty of small screwdrivers from my watch repairing (minor repairs).. I need a quality spanner though. The one I bough a couple years ago was pure crap.