i just noticed im getting some rust bubbles under the doors. one on each side. you know the seem right under the back of the door. i want to stop this before it gets any worse so what should i do? should i sand it down to metal and then just primer it?
Sand the hell out if it make sure you get the rust from inside and out.
Use some spray on rust remover to insure its all removed.
Sand again, Prime and Paint.
Use a coarse rubbing compound to blend in where you just painted with the rest of the body.
Spray the inside of the door with the Green Can of Rust Check, Found at CT.