I was trolling all day and only opened it up a couple times. When I got home I noticed the oil dripping. I took off the cover and cleaned it all up. I was told this probably happened because I idled all day(about 6 hours). I also found 2 vacuum barbs that do not have vacuum lines hooked up. Could this be where the oil is coming from? Where can I get a vacuum diagram? Any help will be greatly appreciated, I know nothing about outboards. I mixed the fuel 50:1 is that correct?