ok so i'm back again with another problem. I've taken some time off working on my car but now that i'm back to it all i had left to do was take it to a garage n get the front end aligned now last time i tried this they told me i had to replace my passenger wheel bearings before the alignment can happen. So i ordered a set of brand new wheel bearing hub assemblies to replace both of them figuring it was better to replace driver n passenger hub assemblies at the same time. replaced them n took it to the shop yet again. Now it sat in my driveway for 3 weeks because i had to go to florida for some work. so these hubs are only 3 weeks old n driven only 20 miles on them and the shop says that the passenger side is bad. now i'm aware that i may have a bad piece but i wanna check all routes first. is there an underlying cause that could make it appear as though my bearing is bad. as for under or over tightening i know for sure i didn't overtighten the bolts but under is a possibility. Also i strictly just pulled the hubs off and put the new one on, was there any seals or anything that were supposed to be changed that i may have overlooked or something?