Hey yeah I finally found the problem. Underneath the seat there are 4 screws that attach the seat to the rails. The frame around the front 2 screws had cracked and warped, allowing the screws to bend and flex. In the end I pulled the seat out of the car, deattached the seat frame (easy as piss) and welded the cracks back together. It fixed the problem right up and the seat has been solid as ever since. Pretty easy to fix, and alot cheaper then buying a new chair.