We owned a new 2004 Gulf Stream Conquest, so we had all the owners manuals. The "owner's manual" was a box with all the separate appliance manuals in it. There was a book for the charging system, a book for the fridge, the stove, the microwave, the toilet, yadayada. The Gulf Stream Owner's manual was basically a generic book of disclaimers, like "check the pressure in your tires before each trip". So I guess what I'm trying to say is that you're not missing much?
But the information is out there, if you dig a bit. Either on Mfr's websites, here on RV.net, or even from other dealers. And a simple book like "RVing for Dummies" can help because a lot of stuff (like dumping the tanks) is pretty common to all RVs?
Regarding the swaying: load it up like you're going camping; then have it aligned at a truck service. That's all it ever took to make ours drive just fine, even in strong crosswinds.