A couple of people have asked about them, but then the threads seem to go off onto other things. So. Someone has oxidisation bubbles. My rear door is not galvanised. The front doors are. So do you scrape the bubbles off, sand, fill and touch up? Also, where I do see bits of rust on mine (so the bar the rubber seals go on), should I brush rustoleum on it? I was wondering if I could dab rustoleum in the rivet holes using an ear bud stick too?