While changing the passenger side half shaft I discovered the hub bearing was going out. Replaced with a new unit from Autozone and all seemed ok until I took the Expy in for an alignment today with less than 500 miles on the new bearing. Shop called and said passenger side wheel bearing was bad and it was. Now I don't know if I did something wrong on the install or if I just happened to get a bad unit from Autozone. I haven't disassembled yet. Looking for suggestions, don't want to replace it again and have the same issue if it's something I'm doing wrong.