[trularin]

Gee, don't take this wrong, but are the races seated all the way?

If not, they would move a little in everytime you tighten the nuts and seem like they never are correct.

Did you mic the spindle and the bearing to make sure there isn't any un-necessary play?

Ernie is correct in that the nuts should be adjusted and locked with the brake assembly removed.

Just my $0.03 ( you get extra )