I'm getting a new truck in a couple of weeks. Has anyone had any experience with, or have any comment about the Timbren rubber overload springs. They work in place of the inflatable rubber air bags and require no action or effort when used. I took the stock overloads off of my '99 2500 and replaced them with the Timbren system and I thought they worked great. It got rid of that annoying thump on every bump. I also carry a 3500 lb Lance camper and It seemed to handle just fine. I'm going to put them on my new truck unless I'm talked out of it. Thanks for any comment. Don