perhaps a lesson learned, don't disassemble something down to the "Nth" degree without first researching the availability of replacement parts..
Therein lies my problem. I can't finish disassembling until I know I can get the rivets. It is also fairly difficult to measure the rivets accurately while they are still installed.
I don't doubt that the parts are available, it's just a matter of finding them which has proved to be a challenge but that's part of the fun.
Is it possible to plate moving parts without disassembling them?