i just returned the demo to the dealer. the only complaint i can find with the fastrack is on hills. i tryed going down the hills at all different speeds but i couldnt find a way that wouldnt tear up the grass. then i whent from side to side and no matter which way it riped up the grass a little. this is the first ztr i have tryed on a hill, are they all like this? i used the hustler all day on 5 different lawns and ended up with the same result on each. i think the tires might be too small for the weight. also how many hours do u think i can get out of this machine.