ive heard of people spraying sea foam in the carbs while the motor is running and then spraying it in the spark plug holes and letting it sit for maybe 15 min and when they restart the motor it blows out a bunch of black smoke and then runs great. well i did this too except i didnt restart the motor for a week and when i started it it started great and blew out nothing but white smoke until it cleared up. it runs fine im just wondering if it makes a difference if i let the sea foam sit for 15 minutes or a week before i restart the motor. i also have a 50 horse 89 bayliner capri 1500 with those plastic windshields and was wondering if anybody knew where i could go for a replacement windshield? thanks