hi guys i live in a very humid environment and even with a fan and a dehumidifier running in the bathroom a couple of new Harts are starting to show signs of active rust!! One was even lathered up in oil between uses. I've since moved them to another part of the house with considerably less humidity and moved them into an improved humidor. But now sure where i should start on removing the rust i've got. I don't want to start hitting it with sandpaper as both blades are matte finish. Any other suggestions on where to start?