I agree with HydroHarold. That deck pully looks like it's leaning forward. If your deck is level like it should be, it's very possible that the deck is bent where the pully attatches to the deck. If someone during shipment slid their forks under the deck with their forklift and picked that tractor up, that would push the deck up under the tractor and possibly damage something. Or if the deck was shipped by it's self in a carton or crate, and fell of the back of the truck while they were unloading it (those suckers are heavy), that could bend something. It would be nice if you could find another unit like yours to compare it to. I can't believe you've been putting up with this for 11 years. Good luck!