I do use a WDH and a sway bar...the max tire pressure for the camper tires is 60 psi so I filled them to 55 psi cold so they probably get up to about 58psi after driving a lil...I didnt want to over inflate the tires and cause a problem...I also added a class V hitch rated at 1600 lbs...the truck and trailer seem to be perfectly level...truck sits like it doesnt even have a camper on it(I have 6980 GRAWR on the truck) you barely see the truck squat without the WDH...and camper is right on level(I have a level on the camper and I also put a 4' level on the floor inside and it read the same thing) I have a buddy with a TT also and he was only setup with 1 sway bar from the dealer and I was only setup with 1 sway bar from the dealer I went to...I don't know why they didnt come with 2 sway bars