hard to say, most stop howling when you turn one way or the other. jack each wheel up and see if you can feel any play. if one has play its the bad one.

how much were these, "some aftermarket" hubs? if not close to a 100 bucks, you now know why it was so cheap.

we try to stick to skf, timken, or moog hubs with a 3 year warranty. and those still go bad. but you got 3 years.