I have a D44 in the rear that has the stock limited slip in it. I noticed yesterday that it wanted to lock up every turn I made. it wasn't chirping tires, but was definitly locking on those turns. Today my wife took it out and complained about alot of popping it. I replaced the gear oil and added a friction reducing additive. Its a little better but still acting up on turns. Is my locker toast? Or is there somthing else going on in my diff? Taking it to a mechanic tomorrow.