Dana 70 restack??

Ok I def. have the limited slip in my rear. Years ago it was very tight and could spin both tires on dry asphalt just like a locker. The other day I was pulling my gooseneck through the mud and snow and noticed only one wheel spinning in the rear. This looks like it only happens when I am loaded. (not when I am loaded when the truck is loaded:hehe:).

So has anybody done a restack in a dana 70? anybody do anything to a dana 70? I don't even know if the clutches are packed clutch steel clutch steel or clutch clutch steel steel.