Bc2000 (for the BCF2000 & BCR2000)

Hi all.  I have been quiet until now as this is the first time I am
digging out my BCR2000 to play with...the one I bought from Ebay a few
months ago, only to find (don't know how I missed it or maybe I did
it), one of the top row rotary controls (one with a push switch) has a
broken shaft.....any one replaced these or knows where to find
replacements?

Thanks
Bob
El Segundo, CA