I had the Rancho adjustables on my 3/4 ton truck and had them set on the firm when I was in my slide-in truck camper phase. They were ok but the airbags made the biggest difference. I have since taken them all off and went with KYB non-adjustable gas shocks and no air bags or overload springs. My camper weighed around 3,000 lbs., thus the need for them. I doubt if you would need them just to pull an Airstream. If you want to keep them I would leave them on the 2 or 3 setting.