Ever see a U-haul trailer loaded so heavy that the car or small SUV pulling it is pointing its headlights to the stars? And, the rig is weaving all over the road? That’s because the front axle no longer has a decent amount of weight on it. You want WD to return a normal amount of weight to the front axle for proper steering. Proper steering is one component of sway control. Set the weight distribution so the back bumper of the 2500 comes down inches and the front bumper comes down close to 3/16 inch. (The articles describing WD setup as bringing down the front and rear the same are for your Dad’s station wagon—not a pickup designed to carry lots of load in the back.) I don’t tow over 200 lb hitch weight on my F-350 without WD. Then add some kind of anti-sway device. Many will say it’s not needed on a 2500, but why take a chance. My son had a pole trailer push his F-350 long bed dually crew cab across 3 lanes of interstate in an out of control sway; then it pushed it back; lucky no other cars/trucks around. Now he uses WD and sway control on the same truck pulling a 5K trailer. Sway is very scary.