Just buy the repair kit consisting of the washers and you'll be fine. Cartridge rarely needs replaced, just remember to clean all the metal surfaces where the old rubber rings were seated. Should last another 15 years.
Mizzou, Auburn, Bama, OSU are all fairly equal and each could win on any given day. OSU probably has the best offense but their secondary is lacking, traditionally a team strength. Bama and Auburn have no "signature" wins out of conference and the SEC backed out of a game with OSU. FSU is probably a notch above all but needed to bench their freshman QB early on and conduct an internal investigation to avoid the controversy they now face in Tallahassee.