Daniel,

It would be interesting to know your whole set up. Where do you store your razors now?

The reason I'm asking: I live in Toronto, which isn't too different in humidity from the Tri-city area. I wipe my blades with Kleenex, and store them in a box in the bedroom. I have never oiled my blades, nor do they form any discolouration, oxidation or rust. there are two small silica packs in my razor box. My razors are stored in the bedroom.

How is it that you're getting rust spots on the pivot? Are you rinsing the whole razor after a pass on your face? If that's part of the issue, you may find that sponge in the bottom of your sink will allow you to wipe the blade free of gunk, while keeping the pivot and tang dry.

Just some thoughts.