I was performing my annuall maintnace on a new mower I picked up during the winter. It is a Hustler/Excell with a 72" 3-way Deck. Upon scraping the crap out from under the deck, I noticed the center blade tilted (about 0.5" left to right). Is this made like that from the factory? Also does anyone have some pictures of the underside of the deck baffles that direct the cuttings? What does the "lifetime" waranty from Hustler cover on the decks?