I bet they didn't fix the shaft. I've worked on f450s and 550s with plows and sanders on them for well over a decade, they're beat and overloaded, one wheel bearing and that's it. Also have two buses on stretched 550 chassis and never an issue with them either, and those are near full gvw when loaded also. I call bs on their claim. I'd like to see what that truck scales out at as it sits, dare to bet its near full gvw or overweight, and they're running stupid single wheels and tires all the way around, the offset in the rear can't be kind to things either...