UPDATE:
I implemented the plugin:
https://github.com/jadehawk/deluxe-sync.koplugin (Deluxe-sync)
Wow - I mean WOW!
No need to try to get any of those other services running...
- progress sync
- syncery
- sync-annotations
AND it worked right out of the box... just added 'their' server, created an account...
THANKS!!!