I came home from work tonight and there is gas coming out of the gas vent and filler hole on the boat. The boat hasn't moved in a month or better. The tank is full. I filled it in Mid October sometime. It hasn't gotten unseasonably warm here lately, so I can't image expansion, but maybe. What is causing this? Also now I have brown stains on the white molded swim platform. What can I use to get these out?<br /><br />Thanks<br />Chris
