Sounds like I'm in trouble also. 2004.5 25000HD towing a 2012 Heartland landmark Key largo 41ft long and 16,000 lb Plus. And it also does not know its back there. Stops great pulls great and handles great. Truck is level headlights are perfect. 19.5 Rickson wheels and tires along with air bags. And I know this did not change the factory towing rating.
Gross weight with the 2500hd 22400 lbs.

I'm now working on a 1987 Ford F800 to tow it with down the road if it works out. And it will be grossing around 30,000 lbs with the same camper.
7460 steering axle
6280 Drive axle
With camper gross is 29740.

Sad part is don't think the big truck is going to tow it any better. May look like a balanced rig but not sure its any safer and better.
Also used to drive over the road and ran triaxle dump trucks for years. Now those are fun, 74,000 lbs gross on the back of a truck. No trailer just a 16ft bed sitting on the tandems and hauler butt. Not everyone has never driven a load before. I think some that never even ran around in a pickup before. Just there car is the ones that think you have to have a truck that is rated for 5000 lbs more then your load or your going to kill the world.
Pete