We've bought 3 new Exmarks lately, but the 52" LazerZ HP w/ 23 HP Kawasaki has an awful squealing noise coming from the right side. It's coming from the right rear tire area and only squeals when going forward...and straight. When I move the controls for the right side it goes away. This same thing happened last week on the left side, but now it has moved to the right side. I can even hear it when I have my headset on!! It's maddening. Gonna take it to our dealer, but just curious if anyone has any ideas. Has to be something with the hydo I am sure...right? Thanks!