NEVER use an sos pad or steel wool. Yes, it'll get rid of the rust, but it'll also add more in the future because it cuts and scrapes into the finish. Use something softer like chrome polish. Another option is to soak it in vinegar. It will soften the rust up so that it literally wipes off. The downside to using vinegar is that it exposes some of the chrome, and requires a polish and wax to protect it from future oxidation/corrosion. Painting springs are difficult to do because it required various angles to be able to get all the parts, and it is easy to get runs. Also, over time, the paint chips off because the metal flexes. If you can afford it, powder coat or rubber coat the springs.
