So yesterday my AE diff fluids and Muegen shims arrived, along with some other goodies! I tore the diffs down, I started with the center diff, upon disassembly I noticed the cup side o-ring was partially torn, wth? I ran this thing ONE time! So I moved on to the front diff, all was well with the o-rings, I went ahead and added only the large shims as the diffs felt pretty good from the start, moved on to the rear, the cup side o-ring was in two pieces!!!! now I'm hoping my local hardware store has the right size o-rings , or my rig in gonna be down again waiting for parts! has anyone else ran into this issue with torn o-rings in such a new truck?