Has anyone else noticed this? This is my first Dodge, so I'm not sure exactly how they are supposed to "sound". I've noticed that when I've got my trailer hooked up, I can hear a thump right under my feet every time the trailer hits a bump. The noise has to be coming from the trailer since the truck doesn't do this unloaded. It's just a little weird since I can hear the noise coming from under my feet, and maybe a little in front of me. I figured the noise would come from the rear end of the truck.