Well I looks like everyone has a solution albeit some are rather faint. But I'll stick with my TrailerAire. That works well for me and I can set the Air pressure to correct for the variables.
I pull a 16500 GVW 40ft fifth Wheel with a F350 SRW. I have over 50,000 miles on the trailer and have not had any real chucking problems after I installed the TrailAir.