Well, it looks as if I will be changing out the diff. I have disconnected everything I need to remove the diff, now I need to drain it. The hard part, at least for me is lowering it out of there. I only have jacks, 2 for the car and one smaller to lower the diff on. I May ask my machinist friend to make a small cradle that I can bolt to the jack. This is a first for me, so I had to determine just what I needed to undo, the service manual says remove knuckle but I don't think that is necessary. I'll let you know how I make out, it's really slow going for me.