[NostalgiaRadioTime]

Great job, Eric! See, you can do a lot with an original finish.

A toothbrush works to clean knobs, if they're not too dirty, but I've found to get the long dried crusty crud out of the ridges around the diameter of knobs, you need something a bit more ridgid. I use one of those toothbrush-sized brass bristled brushes, and it usually does a good job of de-crudding.

I've seen some people clear coat their knobs once they are cleaned, and they do give off a nice shiny appearance. Perhaps a bit TOO shiny, but they look nice anyhow.