[19Fordy]

Thank you David for that "factory spec." and advice. As another point of info. when oily lubricant runs down inside torque tube it will dissolve the rubber cushion around the drive shaft center bearing. 1st photo shows dissolved cushion and if you look closely you can see the shape of the bearing. 2nd photo shows center bearing with most of the "glop" removed.
3rd photo shows NOS center bearing.