Hello everybody, I am currently working on some rust issues with my 2007 dodge ram. I have a couple of pin holes on the fender well. I plan on sanding, filling, primer, and top coating. The culprit is between the inner and outer fenders. There is limited access ( four small holes and the ends are open). I have ran a wire and scraped all the mud and blew it out with air. What product(s) would be the best to treat this rust? I was leaning towards the inside frame paint. Do I need to use a rust converter or incapsulator first? I jumped the gun and used rust mort on one side already. I plan on installing fender liners once I treat the rust.