Attila Ivanszky wrote about the need to fix up the governor on
a Polyphon.  I recently did a clean-up of a Polyphon governor.
No repairs were needed, but it was a rusty mess.  Just for fun,
I created a video of the process, which is here:

  https://www.youtube.com/watch?v=9jjW8Bam3Hk 

Or just do a Google search for Polyphon Governor.  Hope this helps.

Gary Goldsmith
Big Lake, Minnesota