guys, wtf am i doing wrong? u-joint is in no problem. when i reassemble the axle into the truck, i tighten down the 3 hub bolts, then put the shaft washer and nut on. when i tighten down on the nut, the hub and shaft sieze up and won't spin. i thought it was a bent inner slinger so put it back together w/o it and same problem. also, when i first took the old hub off, while breaking the nut loose the front drive shaft would turn, when i reassemble it it does not. and yes, the shaft is in all the way.