Ok. I just bought a 1964 larson a couple days ago. it has the original merc 650 outboard from 64. The guy I bought it from said it had 700 dollars worth of maintenance done recently. So here's my problem. In my driveway with the ears hookes up it runs like a dream. it will idle all day long with the small cold start lever down. Now when ever i put it in the lake it will NEVER idle with the small lever down. It will run with it halfway up or more but not down where its supposed to be. Now this is a problem, which i'm sure you guys know, because you cannot go faster than like 5 mph with the small lever up at all. Its done this both times at the lake now. I let it warm up for about 10-15 min both times with small lever halfway up,, but as soon as i push the lever down it dies. It finally flooded out and i couldn't get it started again. when i lift the motor back up some gas runs down on my hands. Now like i said i am completely baffled because it runs like a dream in my driveway! thanks.