i have a 7040su 1153 fel shuddle shift the only problems the rear end light have the cast centers loaded tires i had the back end come up a few times whhen moving dirt and the other problem is the tractors lack of traction i have 60 hrs on it i wish i would have gotten the 8540 the 8 speed tranny is not enough gears im having the dealer install the creeper kit best of luck to you