I have a JD L110 "automatic" with a 17.5hp Kohler engine, 42" deck and "automatic" trans with foot controls. Has the original turf-type tires as well. The machine has 480 hrs on it, I think it's a 2003/4 model. Starts and runs fine. My yard here in MT is fairly uneven and has some gentle sloping hills. This mower cannot even climb the slightest hills--usually ends up with one tire spinning. If I shift my weight, that tire stops and the other one ends up spinning! It is also very slow in reverse, even on flat ground and has even more difficulty backing up hills--usually can't be accomplished. Is this just the nature of a low-end JD mower, or is there something I should adjust or look for in the hydrostat mechanism. I can work on engines, but know nothing about hydrostat transmissions. Any help much appreciated.