The 2017 F250 sits higher than earlier models. Most companies, Hensley, Equalizer, etc., don't have the correct hitch bar off the shelf to match the length and drop you need.
I ended up getting a Curt Mfg hitch bar to be able to level out both the truck and 28' Flying Cloud. In addition I had to be able to open my tailgate to let our 4 Setters relieve themselves without unhitching!
I didn't want a set up that was unsafe so I drove to combo to "The Hitch Man"
www.thehitchmaninc.com 70 miles from my house to have it done professionally... It was the best $150 we ever spent! They had a perfectly flat and finished concrete floor with levels and lasers and a 6 foot torque wrench. They did all the measurements, installation of my hardware according to the hitch company's recommendations. This is their business, don't trust your safety to a guy with an impact wrench on a gravel parking lot.
We now have over 10,000 miles on our trailer. No bunny hopping, no sway, level truck and trailer.