[MarkEHansen]

The WD hitch is not intended to level the truck or trailer. It is designed to distribute the weight placed on the hitch to both the front wheels on the truck and the axles on the trailer. You want the truck to be level, but it usually doesn't get back to level when things are set up.

When setting it up, you want both the truck and trailer loaded as much as possible to match the load you will see when towing. Then adjust the hitch to distribute the weight. When you do this right (and sometimes it takes a little trial and error) you will be able to level the trailer (or get close to it) and almost level the truck.

The installation/setup instructions for my hitch (a Fastway E2) cover how to do the setup and adjustment to get what you want. I suspect other hitches have similar instructions.