I am restoring my 1951 3100 bench seat cover and stuffing. A prior owner recovered the seat with a new seatcover kit but appears to have used the original stuffing. The seat is very uneven and bumpy. I would like to take it apart and start over but I don't have any plans or instructions on how to restore it properly and what materials to use for the stuffing. Does anyone have any advice of how to go about this rebuild or know where I can get on-line instructions on seat restoration?