installed leveling kit now I got a noise in the front end.

Hey so I installed a Ready lift leveling kit and raised the back up and inch. About 2 months later I started to get this vibration hummish noise in the front end. Took it to Toyota and they said they wont warranty anything since I touched the suspension, but all I did was lift the body. So I talked to a few others and they said put the drive shaft shims so I did and didnt fix my problem. Then I took it to a buddies shop, they looked at it for me and said it coming from the front and they figured it was my front right wheel bearing. So I asked Toyota to replace it and they did under warranty. And I think it even worse now. This is driving me effing crazy....any suggestion out there?