hey quick question just trying to figure out the exact problem with my hydro the the lazer z. It is a 07 Exmark Lazer Z with 1700 hours. My right side hydro has seemed weak. It seems to have some chatter when going up hills and I sometimes find when going up hills my left side over powers the right causing the mower to swerve to the right as it trys to climb. One thing I have noticed lately is if I am going down a hill and then I stop and try backing up and the wheels start slipping the right wheel will actually intermittently stop even though the levers are pulled fully back. Does this sound like a hydro or a wheel motor problem? I have not checked the reservoir for metal shavings yet. Just wanted some insight. I bought the mower with 1000 hours on it so I am not fully sure of it previous history as far as hydro oil changes and stuff goes. I know it is regularly maintained now.