MrTruck comparing overload springs. Will test against Sumo Springs on my F150. https://mrtrailer.com/springs.htm . Looks easy to install. Several friends wanted me to try it over the years. I didn't like it attaching to just one side of a leaf spring. But seeing it at in action, I understand it now on the shackle side of a leaf springs where the leaf spring naturally moves as the leaf flattens and arcs under load. RoadMaster should help eliminate truck axle rap and wheel hop. Stay tuned for more video's as I put it to the test. https://mrtrailer.com/springs.htm . roadmaster active suspension, natda #MrTruckReviews #trailering