Thanks for the input. I thought it would be the hub bearing, but when I took it apart it feels fine. It is smooth and tight through the whole rotation. So I started wiggling things around and checked the half shaft. In the process I could see the axle flange that goes into the Diff moving around. I removed the half shaft and this axle flange was really loose and not just in and out, but side to side as well. Since I will have to pull the diff I will check the other bearings. Thanks again.