A lot of people here get hung up on getting the TV level, and that's wrong. That's not the purpose of WD. You can level the trailer by moving the hitch head up or down. Once you are happy with that, adjust the WD according to the hitch instructions and to the spec given in the manual for YOUR truck. Don't try to level the truck using the hitch. Once it's right, don't tweak it. Ignore suggestions to "play with it" to see if you can get a better ride. That also is not the purpose of WD.
If you haven't read the stickies at the top of this forum, then do so. They should be required reading and a lot of people here have chosen to ignore the information and instructions in order to do it their way. Again, not correct.