“With the load bars attached the hitch head moves up (pivots on the lower bolt) and the top bolt slides forward. When I remove the hitch bars the hitch head drops again.”
No matter how you cut it or gloss over it this is not a correctly set up hitch or a failing hitch and its definitely time for a new one…
“It actually really shows that the bars are working.”
Unless I am missing something it shows nothing about how well the bars are working… that would be determined by how well they lift weight off the ball and transfer it to the front axle of the TV…
If 400 to 600bars are near perfect, how do you expect 800 to 1000 pound bars will do???