Recheck the seating of your bulbs. They may have felt right but a second check and jiggle and you may find that they didn't get seated right. If they can be moved slightly then you're not seated all the way. You'll know when they are. They won't budge. If they were aimed right before replacement, then they shouldn't need re-aiming. I had HID bulbs (Ebay cheapos) that were way off and found that the bulbs were not built straight. Replaced those with much better quality Morimoto HID bulbs and aim was perfect w/ no adjustments needed.