I've had some small rust spots on the inside of my drivers door for some time. It hasn't concerned me that much in the past because you couldn't see it. Today after the car wash, though, I saw that it has made it's way to the outside of the door. It runs most of the length of the door with a few bubble spots. If I remember correctly, the rust coverage ended at 80,000 miles (please somebody tell me I'm wrong) and I'm at 85,000. Has anyone replaced or had this fixed? I'm wondering how much I'm looking at? Thanks!