This is my first year with my 09 1500 4x4 and noticed a real nice ride with 1 or 2 people in it but with a load or towing our camper it rode like a rock. when i looked under the rear end i saw i only had abt 3/4 inch of travel before axle contacted the rubber springs/bumpers whick caused the rough ride. I removed the rubber springs/bumpers and cut them in half to gain more spring travel before contacting the rubber. What a difference in the ride! now i can tolerate towing the camper on a rough road. Was wondering if anyone else has tried this.