I started work on the only rust on my X, the bottom of the drivers side front door. I pealed back the skin where it folds over the shell of the door, cleaned all the loose rust out and POR-15ed everything, folded the lip back and por'ed again. After the por set up a little I took a syringe and injected por-15 into the clip holes for the lower rubber piece. So the whole bottom crack of the door should be submerged and sealed once dry with POR-15. The passenger side front door just had a little minor surface rust just starting at the seam, I also cleaned that door up and injected it as well with por. Tomorrow I will be able to paint it back white and eventually put the rubber back on.