Hi Carl
I read through all the thread, you really have an amazing truck built up.
I just want to tell you 2 or 3 things from european sight, i'm from switzerland.
Heating and Cooking; My Rig runs completely on Diesel, i have a Wallas Stove in it, it runs since ten years flawlessly even in 9000ft altitude, also i have an ESPAR D4 Plus Airheater that also runs since many many years -both of these units are profen to be good if the installer watches for some points not to make a mistake. Nowadays wallas sells a oven too. Sure all this apliances are expensive but they are 100% safe, dont need air to burn from the inside of the cabin and i dont need to carry other fuels then for the engine.
Tires, Michelin sells the 275/80-20 XZL for sure, a lot of vehicles use them, mainly military ones - maybe not in the US but with strong searching there should be some sources that can deliver them to you. They last around 50-60'000 Miles.
On the other Hand, have you ever thought about to retread your worn MPTs? It could be a good solution for tours that dont have a lot of heavy offroad, could save you a lot of money.
Shocks, for Trucks like ours that are far out of the common specs dont even think about generic shocks, they will never ever do what is possible to do on your rig.
When my truck was set up i did the same mistake, installed bilsteins and it was an epic downfall, the truck wasnt to handle on road except on freeways.
I went with King Shocks, customvalved to my truck, my weight, my tires and my driving style - now it handles like a VW Jetta under any circumstances, no matter if tarmac or wash board or rock climbing.
Bought them from downsouthmotorsports in San Diego - this guy did really a great job!
Last but not least - you have a big Camper, small is mine. :victory:
Best regards
Ozymandias