Did you toss a weight off the rear driveshaft, or ding it on -
Oh, I don't know- a rock or something? (might be worth a balance at the DS shop?)
Have you had the driveshaft apart? Is it possible that the driveshaft is no longer "in phase"? (U-joints on each end no longer perfectly aligned, off a spline more in the slip?)
I'm trying to go for the little things that would not be noticed for the vast majority of the useage...
Was the replaced unit bearing off brand crap, or quality stuff... I've seen some unit bearing testing where they sucked right out of the box... :confused: Maybe just the other old unit bearing whining about the attention payed to the other side??
That's my $.02