Look at my hitch set up please....

I have always found that you need to level the trailer. Measure from the ground to the inside top of the hitch coupling. What ever that measurement is, let's say 22". Then park your truck on level-ish ground and adjust the hitch-head assembly so that the ball is the same distance off the ground as the inside-the-hitch-coupling you measured first; in our example 22". Some "tilt" adjusted on the head gets you some more "uhmph" out of you equalizer bars. Then when you lash this whole thing up, drop enough links, likely 4-5 with a 1/2 ton pick-up and you should be pretty close to the 22" hight that you originally measured