Spend the $500 or whatever on the floor kit and get rid of the stupid hump under the front drum of the rear feeder. We used to choke our feeder house several times in the morning then once or twice in the afternoon followed by another round as the dew set in. Maybe 6-10 times a day, more if it was cloudy or green stems were present. We just put that in our 72 and it is short of amazing. No difference in corn, but in beans it makes as want a bigger head. We have cut 500 acres of beans and while I don't run the combine my brother thinks he has run the reverser twice all year. The limiting factor now is the cross auger in the head and the rotor. The cross auger can slip without warning, but is an easy fix and the rotor will let you know before you get in too much trouble. Even if you slug it the rotor cleans out easier that the feed chains if you can't back it out. We shimmed up the clutches and while it helps when they do slug there will be more times the reverser won't back it our and in our case we broke two rear feed conveyour shafts.