I agree with Carl on the springs.
Or, just do not paint the springs?
I completely agree with Estock on the frame.
You could add the POR exterior black as a top coat; but, unless the POR will see sunlight, a top coat is not necessary.
Be careful with the POR time-between-coats directions.
Agreed with the drying time. I find the time to dry changes drastically depending on the temp outside.
