Here are the basics:
++Level the TOW vehicle with w/d bar adjustment...
++Level the TT with the hitch height adjustment...
++Level the w/d bars with the angle adjustment on the hitch head...
Assuming that you are on level ground, it looks like your trailer is nose high which is not good. That could induce sway.
To start with, get an adjustable ball mount shank so that you can lower the ball and the front of the trailer...then go from there with your frame measurements and your wheel well measurements.
something like this.
