Let's see what we can figure out, Bill. For best results using Rust-Oleum Stops Rust Clean Metal Primer, after vigorously shaking the can for at least one minute once the mixing ball begins to rattle, hold the can 10-16" from the surface and spray in a steady back-and-forth motion, slightly overlapping each stroke. Keep the can the same distance from the surface, keeping it in motion while spraying. Apply two or more light coats a few minutes apart until the desired coverage has been achieved. To avoid finger fatigue when spray-painting, Rust-Oleum Comfort Grip is an excellent option.
https://www.homedepot.com/p/Rust-Oleum-Stops-Rust-High-Performance-Comfort-Spray-Grip-Accessory-241526/100670383
- Rust-Oleum Product Support 6