While mowing this past Saturday, I noticed the left drive motor cutting out while trying to turn. It would simply stop half way through the turn. I limped back to the garage and lifted the seat to look at the drive motors. After I had let the engine idle down, I heard a noise behind the seat and in front of the engine. I narrowed it down to the left pulley wheel that the drive motor fan belt runs along. After more investigating I noticed the the fan that sits on top of the left drive motor was slightly angled. Has anyone had anything like this happen before and knows what's wrong? I'm loading her up after work today and going to the dealer to have them take a look. Still under warranty so I don't want to mess anything up.