Just wanted to post some feedback after 150 hours of use on the new mower. No complaints except that I still find the narrower more rounded profile tires spinning more than I remember them on my near-identical '98 unit with more squared off tires that had a wider effective tread on the same size tire. The current tires do damage less when they spin, but they spin more often. I've lowered air pressure to 9psi, but it seems the actual tread compound is a little harder. Also, I think the weight distribution is a little front heavy, which could affect the traction. I drove it up a trailer ramp today with my trailer already parked on a steep drive, and it did great, so there's sure no problem with it rearing up on hills. I lose traction on even slight downhills and while cresting some hills in some situations. I'd like to see future models have more rear weight bias. Do you a) think that different tires would help the situation? and b) is it possible to go up a size in width and still have proper clearance?