Air bags vs payload capacity

I have Ride-Rites on my class C. They seem to do a fine job there. Of course, with a class C, there's little need to adjust them for varying loads; the vehicle is pretty heavily loaded even when unloaded. I only need to check them occasionally to keep up with any slight leakage (similar to checking tires).

I would suggest avoiding a setup where the two sides have the air lines tee'd together. That can lead to rather strange and potentially dangerous handling in situations where the load on one side is temporarily heavier than the other (a sidehill, or a bump on one side of the road) and the air moves from the loaded side to the unloaded side.