So the other day i was riding around town and the bike just quits running. It happened several times so far, it seemed like phantom out of gas syndrome so i rebuilt the gas cap, i also replaced the vacuum line for the petcock. I took it for another ride and the bike died by the end of the street, when i brought it back home i tried to leave it running as it seemed to run fine while not under load and didn't die out. when i turned it off there was a noticeable wine coming from the gas cap. anyone have any ideas on how i can fix this?