Thanks for the info. Your help and the FSM gave me a better understanding. I have a feeling the bearing will need to be changed as well. Its been leaking for a few weeks now. Probably took the grease out and cooked it. Its recently had a slight vibration/noise over 55 I was hoping it was new tires or the shop not balancing them correctly. Going to rotate the tires to see if it changes anything in the mean time.
Will need to get some more tools together for measuring end play and pulling race/seal out of the tube before I tackle the job. Think I can make something like whats used in the FSM out of steel to get the bearing and shaft apart.