When you installed the camber kit, did you tighten those bolts while the car was on the ground, or when it was up on the jack? Make sure when you install any type of bushing that is going to have a load placed on it, tighten it when the load is on it. If you tighten it when the car is jacked up, and then lower it, that bushing wants to twist back to it's original position. In turn breaking your bushings. It's a real pain in the ars to do, but it is possible, if you can find a drive up lift.