This may have been addressed on here but last week I went to put gas in the boat and I couldn't get any gas in it from it "burping" out. My boat is a '92 BassCat Classic and this has never happened before. The tank was half full. I tried another gas station and turned the nozzel all around with no success. I'm thinking this has to be something simple but I can't figure it out. Could the fuel line or vent line be rotten on the inside of the hose? I gently blew air throught the vent hose, it doesn't seem to be clogged. Thanks for your help!!