Well, for better or worse, I proceeded on my own. I grabbed my fine steel wool and set to lightly scrubbing the exteriors and aluminum surfaces that slide against or contact other surfaces. Dry-wiped everything down and blew the heck out of everything with compressed air, hopefully to fully remove any stray steel wool fibers. Finally, to protect them from the elements, I rubbed them down with a thin coating of light machine oil and buffed them dry to the touch.
Here's one - it only needs the float jet to be good to go (I hate waiting for parts!):
It cleaned up pretty well - shiny, but not too shiny... don't want it to look brand new!!!
Hoping that it'll work shiny... (shoulder-shrug smiley here)