Thanks, the door track itself I just polished with 600 grit sandpaper, the area under the track i sprayed rock guard. I'll see how well the coating on the grill will hold up according to the directions it should be peeled off after 6 months.
on my last truck 2008 i repaired the rust and used caulking on the exterior trim part to prevent salt water from going in behind the trim. The area behind the black exterior trim was badly rusted and i think its designed to channel the water behind its and out the bottom. Caulking it prevented that and i had little to no water build up in the inside. Removed my interior wall covering and sprayed it down with transmission fluid that i read was the same thing the rust check place uses.