Need Suspension Mods

I haven't seen anybody ask it so here goes, are your airbags independent of each other, or are they sharing the same air fill location and connected to each other? Airbags need to be independent of each other and if connected will worsen sway. Having gotten that out of the way. Firestones worked well for me but to ride level, I had to fill them to 80 PSI so the airbags were doing most of the work. I have a large rear sway bar and Rancho 9K's but I still got frequent bottom outs on back roads. Solution, I removed the stock 3000 # rated OEM springs and installed 6+1 leaf 4400 # rated rear leaf springs. The Truck and camper ride close to level now requiring only about 10 pounds air in the Firestones. The Firestones don't reach the spring unless the camper is on the truck because it sits higher now but that is ok, The Firestones are still attached to the frame mounts and when the TC is loaded and with 10 pounds air, they ride on the springs also lifting about half an inch making the tuck level. The airbags are also a third support point for the frame distributing the TC weight better than just the front and rear shackle mounts alone would do. It took myself and a friend a few hours to do the whole job, both sides. Price was about 150-200 each and 250 shipping from Texas from SD Springs, check the name, SD something, Bedlam's recommendation. They are working great after I think 2 years now and I have no complaints about the ride whether the TC is on or off. Here's the installation video if your interested, others here may have seen this video before. Rear Leaf Springs Installation