Have you looked at the Demco Glide Ride? It is not an air ride but does a pretty good job with the forward and aft movement. I did have a problem with chucking with a B&W Companion hitch but I really don't think any solid mount hitch has much to do with it. I would think it has more to do with the dynamics of hitch and axle weight ratios and maybe even the wheelbase of the truck. All I know is changing trucks from a short bed srw one ton to the dually solved the problem. Throwing in a Trailer Saver BD3 really made for smooth sailing.