iI have a 65 hp mercury outboard with serial # 7039950 and was wondering if anyone could tell me the year. and also i had the boat out on the water today and ran fine for a bit and died and wouldnt turn over at all but after 30 mins or so started. took the carbs off and cleaned them and fond that the float needles were 2 different shapes. one was round and the other was square. dose that make a diference? i then discovered that the fuel line was bad. thanks for your input in advance