I bought my boat last march from a dealer who was acting as a broker for the owner. The boat was winterized, by the dealer I think, because when I started it in the spring both petcocks where open and the hose coupling between the manifolds was disconnected. I ran the boat all summer putting on about 30 hours. The engine ran fine no problems. Last weekend I winterized the boat and discovered a crack in the block. What responsibility does the dealer have for this issue? What is the best way to approach them?