I recently just purchased a 5 gallon metal gas can off off a friend.while hooking it up the fuel line the outboard motor side fit just right with a good seal but on the other end of the fitting that meets the gas tank was being pushed out by two pins that prevented a good seal to the gas tank.The tank is empty and has no gas in it but I am curious why those pins are pushing out the hose line if anybody could help me resolve this problem it would be appreciated thanks a lot..