[DennyB]

If you crank the nut down till you stop the wheel you can damage the bearings.

Tighten the nut till it just starts to slow down the roter. this will seat the bearings, then back off till it spins free. there should be NO side or top movement when your done.
If the is movement at top/bottom, double check the ball joints.
Just seat the seal flush with the rotor. It makes it seal over the spindle. also put a little grease on it before installation.
Did you replace the bearing races when you replaced the bearings? If not, a bad race can wear out a good bearing. They should have come with the bearing and are easy to install.
Have Fun!
Denny

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Toms River NJ
(Transplanted Hoosier)

56 working Street (under construction 71-2 coil chassis)
91 S10, 4.3L-700R4
92 Olds 98 land yhat..(wifes)
20 ft. long hole in water in which i throw my money

''Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut. - Ernest Hemingway''