Our first tow was down 35W (Fort Worth) down to Burleson...if you have traveled this road you know it is a rivet popper. with our Jayco and our 5th AB sidewinder, it was tolerable and I ran 20lbs of air in my Firestone air bags
So I pulled on Wed down to Jellystone park (Rustic Creek Park) and 35 beat the living crap out of me...
So I did an experiment today. I ran a test at 40lbs, 50lbs and 60lbs. I have NEVER run that much air in my air bags but 55 was the magic number with my set up and with the Morryde.
So the moral of the story, if you get a Morryde king pin and you have air bags...pump more air in there.