Before reading the forums, I went to HD to get something to remove some rust off a jointer. I got some naval jelly and followed the instructions precisely. It left a wierd discoloration on my jointer. Had I read the forum, I would have known this. Anyhow, does anyone know how to get this discoloration off? I have heard fine grit sandpaper and WD-40 from a couple of people, I have not tried this, is this the best way to go about this?