The traction enhancing assembly or the carrier assembly in the rear end came apart in my 07 C&C this past week and pretty much made a mess of the rear end. Needed the carrier assembly, carrier bearings, pinion gears and bearings and the pinion seal. The axle bearings and other gears were OK so it was put back together and hopefully it will keep going for a while longer. I had lost a carrier bearing about 3 yrs ago and it knocked a hole in the cover and lost the oil. The pin weight on my trailer is around 2500 lbs empty so the rear end has a pretty good load on it all the time. I'm not planning to get a new truck before I retire so I'll just keep fixing this one unless it gets totaled or something. If that happens I'll probably be totaled with it.