Our 9632 combine is a dog in the hills. On most hills that we have to climb, we need to down shift into first gear. The conversion company uses the same 225hp engine that is in the flatland machines. With all the extra hydraulics the engine is running, the machine will bogg down while climbing, and hydraulic oil gets hot. I try not to climb hills because of grain loss. The hydrostatic will hold you going down hill, that's if the transmission does not fall off. The front disk brakes fell apart during the first season, and have not replaced them sense. Even if the disk brakes were still on the machine, there is not enough surface area to stop this machine loaded or unloaded with 7 tons of grain. lost the transmission three times, went for a hell of a ride. Sinse our sidehills are so steep, it puts the drivlines in an awkward bind that moves the transmission,and breaks the grade 8 bolts that hold it to the frame.The machine is so big and heavy that it will not spin the front tires while climbing, like an 6602,or 6622. The combine will hydrostatic out first. However, once you get the combine on the hill and leveled over, it's hard to get it to slide. Even through ditches and down grain, I don't need individual brakes.