We were traveling through southern Arizona when the leaf springs failed for the third time, so we spent a few extra days researching ways to eliminate the problem. We decided to go with heavier springs and to install air bags. Then we went looking for a reputable suspension supplier and found Straight Line Suspension. Marc Knutson took our call and knew what we really needed. He seriously upgraded the leaf springs as well as he had a better suggestion instead of air bags he recommended a different type of support. If you want more information call them!!