I've got a new 24 foot E-350 which seems very loose. Since I almost always tow, I added leafs before my first trip. The leafs made the rear end ride much better but the front end is very sloppy. The power steering seems to have some lag. When I hit bumps is seems like there is lag in feeling the bump in the steering. It also seems like the RV is constantly wandering or hunting on the road. I've got a diesel Excursion which weights 8K lbs. that's tight as Porsche (I've probably been driving trucks too long ) Is the loose ride normal? If so are there mods that can be done to tighten it up?