Attention: TDR Forum Junkies 
Well last week I had to put the rig on sick leave due to a serious whine on the highway (10 times the sound of my Pdr turbo) and a very slight vibration ..... allmost like a bad set of tires when coming to a stop. so in the shop it went and I slid underneath to find not only the center bearing roasted but the primary and seccondary U~Joints were completly destroyed (Pinion joint was fine) I could get at least 1/2 ing of movement by hand between the joints and 3/4 to 1"inch on the center bearing just by pushing upwards on it... ... So off to get rebuilt as I would be laughed out of a dealer anyways. The seccondary joint (Post center bearing) the caps were all that were left in the joint and the cross was about half of what it once was 
which threw the shafts out of balance which took out the center bearing and primary spicer joint.
Well now I have a professionaly balanced shaft / with hardened joints ALL of which I had replaced and all I can say now is I think my driveline is smoother than when I bought the truck (Granted the 93% converter and valvebody stiffened up the transmitting end of it) I am now a happy camper once again
which threw the shafts out of balance which took out the center bearing and primary spicer joint. Well now I have a professionaly balanced shaft / with hardened joints ALL of which I had replaced and all I can say now is I think my driveline is smoother than when I bought the truck (Granted the 93% converter and valvebody stiffened up the transmitting end of it) I am now a happy camper once again
I've heard of here. Love to know how you did it!
