Just so we're clear... You wanted me to measure the 2306 tongue height, correct? I think the ball height as it sits on a vehicle will vary slightly depending on the vehicle itself and who/how it was installed/set up... Correct? The WD system will also cause variation.
I have the Equalizer 4-point... For me, a more expensive, "better" system would be a waste of my money, as I have had no issues with sway since installing it. And the kicker for me to go with the equalizer over some of the others was that you can hook up easily even if you have to back in at an angle.
2015 Coachmen Apex 288BHS
2014 Toyota Tundra CrewMax 5.7L