I am getting real hot hubs on the rear, both sides. I have backed the adjustment off some on the emergency brake. But still need to get the calipers off and checked. I have checked both sides for play in the bearings and cv joints. Could the rear differential being low on grease cause any of this? I have grabbed hold of cv joint shafts and they do not feel real hot only the hubs do and they are hot enough you cant even really keep your fingers on them. Could it be the bearings? But I do not feel any slop in them.