You might look into Timbren rubber springs. They perform like airbags, but you install them and forget about them. Also usually cheaper. They have a progressive rate. I have had them on my last few trucks and now my dually, not so much for load support but for their shock absorbing benefit on large bumps and dips. They help to control the motion of the stiff leaf springs. On my GM trucks, about a 10 minute install with only a large screwdriver, floor jack, and a piece of 2 x 4 wood.
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Dave and Darren
Max and Riley chihuahua/Jack russell K9 campers
22 Rockwood 8291RK fifth wheel traded
22 Cedar Creek Champagne 38EKS
Our 14th! RV
2019 Denali dually Duramax BW companion, timbrens
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