Does anyone else out there have problems with wheel motors on 27hp lazer z's? If I take the machine on a steep hill and try to go straight up and down it works fine. If I have to cut across the face of the hill the lower wheel motor stops turning. If I have to turn on the side of a hill and start back up, the machine want's to stop moving also. Lase year I bought 2 machines. Within 1 week one of the machines was back at the dealer and I put 160 hours on their new loaner before mine was fixed. They would put a wheel motor on it, I'd pick it up, use it one day and take it back. 4 wheel motors later they got one that worked. At one point the dealer told me that Exmark said they wouldn't replace anymore wheel motors on that machine. The dealer assured me they would make sure the machine was right. They (the dealer) have been fantastic thru this whole thing. This year I bought 3 more. Used one once, took it to the dealer for same problem. 3 trips later its usable but I still don't think the wheel motor is right. Their fix was to swap both motrs side to side and see if I'd notice a difference. The machine still comes to a crawl on the face of a hill. Now one of the other one's I purchased this year is at the shop with problems. The dealer is telling me that the pressures on the pump are all within specs and the wheel motors seem to be in working order they think the problem is the fact that Exmark has started to install pressure relief valves in the wheel motors and that when the weight of the machine is basicaly on one wheel, the lower wheel when going across the face of a hill, the relief valve opens before the pump can develop enough pressure to move the machine. Exmark, what's going on? We mow enough levees and hill that this is unacceptable. Help.