"Lynnmor wrote:
One more thing, if you have a lift kit on the truck just park it.
LOL "
A lifted truck has less torsional stability, and is more prone to respond to external forces; both side-to-side, and up-and-down.
If you get your WDH set to the proper height (you will have to get it low enough for the trailer to be level while towing, and the truck level when towing, which means a new/custom drawbar assembly), it should be better. With your trailer pitched up, you have less weight on the tongue than is ideal, allowing the trailer to wag the truck.
Balance in your setup is more crucial than lower trucks, so taking the time to get both level will pay big dividends. Simple physics.