a couple of weeks back I posted a question about others having a problem with the Lazer Z'z stopping on hills. You were very prompt on getting back with me and then talking with the dealer. You said you were certain it was a problem with the belt running the pumps. Well, the dealer had it for almost two weeks, many consultations with 4 different people at exmark, yourself included. Machine seems to run fine now that it has, according to the dealer, 2 new pumps and, if I heard him right, 2 new drive motors also. This is the machine that the dealer switched the drive motors side to side to see if I would notice a difference when I got the machine back. Thanks Exmark for backing your product. I really like the dealership, but am a little miffed at their switch stunt instead of checking with you guys if they couldn't find a fix.