I pulled out the passenger seat, and saw the rubbery material had broken. Sure enough, I pulled the driver’s side, and saw the same thing had happened. In fact, my driver’s seat was collapsing, helping create folds in the leather.
Passenger:
Driver:
Next year during the off season, I might send the seats to an auto upholsterer. For now, I’m using some scrap 1X8 boards, and some 2 inch foam left over from recovering some dining room chairs:
Feels a lot better all ready.