Interestingly, we broke 4 rear axles that weekend and one front/long. The front issue was kind of strange - I think it was more from some prior damage than anything at the point of breakage. I'd say that this is a pretty good testimony to the work that Bobby Long has done. also, the Pig 4340 inners complete a pretty stout font axle package!
I am replacing the diff case, the cross pin and all of the o-rings and seals. It is still much cheaper than a new locker. Tim Lund @ ARB USA really came through for me. And I am now much more knowledgeable about ARB Lockers. Between this and the field repair school that you held in South Dakota - I'm in pretty good shape!