Thanks for that diagram, cyclotoine (and thanks to jbensch who emailed me a similar scan!)
it's clear what I need are parts 9 and 10, but also don't have the thin washer (#2) for the RH side, either, tho it works ok without it.
There's my wish list: parts 9, 10 and 2 or substitutes that work.
Now here's my question: can the RH shifter be set to work in friction mode? I can't find the setting if it's there...