"My 63 Johnson 10 H.P. (model QD24) is running excellent but is dripping unburnt fuel/oil mixture I believe out of a pin hole (vent) onto prop thus accumulating onto floor. I was concerned about it and have been since told that the lower crank shaft seal probably is the culprit. Due to cost of repair I have ordered Seloc manual and may plan to do this job myself. The motor has had lower unit serviced (seals & impeller) and tune up in August. Do you think lower crank shaft seal is causing this accumulation? If so, will Seloc manual step by step this fix? Please help, Thanks..."