Do I need to use anything over this rust or just strip to bare metal and shoot with epoxy primer? The paint is baked off in several locations, but the car itself is 100% solid. When brought to bare metal I can still see little spots where the rust was and thats what concerns me. Is there a product that I can use to neutralize the remaining rust traces after the whole car is brought to bare metal? 1st pic. up close, 2nd pic. rear 1/4, 3rd pic. after D.A.