Yeah, my 95 wagon driver's seat feels the same. Not sure if it's related, but this weekend the old girl spit out a nice, shiny ball bearing from the underside of the seat. This things was about 1/2 inch or so in diameter and as near as I could figure it came from the track area on the floor. Didn't investigate it yet. But that loose feeling has been there for a while; long before I saw the bearing.
Brian

__________________
Brian
1995 E320 wagon