Thanks for all your suggestions and thoughts. I've noticed that some suggestions are made thinking that this is an out of control condition, it's not. All I am wondering (and probably should have asked) was who has better dampening rate, Bilteins or Rancho's.
After speaking with Firestone, they recommended the settings that I was using on the bags. That's the luxury of the air bags, you can add or take away. Especially when I get my compressor and gauge installed. Just dial it in as needed.
As far as there being a problem with the truck or trailer. No problems! Just trying to tweak it in a little better!
Thanks again.