What is the GVW of the truck? Other web sites say the vehicle grosses out at 5700 pounds. Even with overload springs, the axles are still carrying too much load, as is the brakes. Is the truck really 1300 pounds over loaded?
This has been covered a few times, but Paul may not know the details, so I'll reply rather than letting the implication hang that he's got this wildly overstressed vehicle to control . . .
If the question is "is the truck 1300 pounds over the manufacturer's Gross Vehicle Weight Rating?," it is. If the question is, "Is the truck overloaded?," it is not. All the components have been changed to allow for the weight, first by EarthRoamer when they built it--and you can safely imagine they could not risk putting out a dangerously overweight vehicle for liability reasons--and then through modifications made under my ownership (notably the addition of the big brake kit and even heavier duty springs and shocks.)
Would it be better if it weighed less? Sure. It would be a little more nimble and would get better fuel economy. Is the higher weight a fair tradeoff for the accommodations and capability? I've certainly thought so. The truck has consistently performed well on highway cruises, winding roads and trails, with no hint of problems.