Okaya Lord 5D

Hello!

I came across my father in law's old Lord 5D camera recently. It's a really neat old rangefinder - Okaya Lord 4D and 5D

I'd like to get it cleaned up and working again, but it's missing the "helicoid focusing lever" - the little knob next to the lens. I've heard that some old minoltas have a similar lever that is a failure point over time. Does anyone here have experience with this or know if it's even possible to find parts still?

Link to a thread from 2010 on the same camera, which was how I found this forum - In the Presence of the Lord (or, some shots from my 5D)

Thanks for your help!

Kelly