Thanks Al for your write-up; yes, you are in a climate that can promote rust easily......do you also get a lot of salt water moisture in the air too?

I think there are a couple of reasons for the rust along the bottom of the Xfire doors, being a vulnerable area; mine started at the spot welds that hold the weather strip channel onto the door. I have treated mine with rust remover and then coated with rust inhibitor and then coated again with thin coat of silicone glue before putting the weather strip back on. As far as I know, rust has not reappeared...........however, my Xfire now resides in the dry climate of Phoenix, Arizona.

Thanks again for your response.