I see you have some rust on dem der nuts. Guessing other is same. I want you to know this is a top secret multibillion dollar research answer I'm about to give you. Don't tell anyone for gerds sake, it would destroy the atmosphere and cause climate change and crumbling economies. If you knock off the rust with a little steel wool, then take a bit of your girls ( or yours if you are a girl) clear nail polish, or some clear enamel/lacquer, and give it a light spritz. No more rusting, and it helps to keep the nut from backing off. Not that your nuts are going to fall off, I'm sure they are firmly attached. Just saying it will help your nuts.