I have a new (less than 30 hrs) on my 2 stroke Yamaha outboard. I noticed yesterday that gas has been leaking down the shaft of the motor. I took it out yesterday and it was hard to crank, but once it was going it ran good and it started no problem the rest of the day. I replaced the spark plugs last week so I know they are good. I've inspected under the cowling and there is no gas leaking from hoses or carbs. To tell you the truth I don't see any signs of gas inside the cowling, it's clean. Just a few minutes ago I tried cranking it and raw fuel was flowing from the exhaust through the hub. Is this normal?