I've got a '75 CB550F (see attached photo) with the original Kerker exhaust on it. As you can see from the photo, the upper half of the exhaust has some rust and corrosion on it. Exhaust is in great shape otherwise, but I want to fix the issue simply for aesthetics. Do you guys have any advice on the best way to remove this, and then possibly paint over it to match the clean black of the back portion of the exhaust? (She just survived Hurricane Harvey, so I want to celebrate by cleaning her up a bit). Thanks!