I have just bought a 1979 v-6 150hp mercury sn#5342369. It has 3 different carbs on it, WH1-1,WH7-3, and WH4-2, top to bottom in that order. The casting number is 1374-5427 on all 3 carbs. The current jets in the carbs are .048 main, .056 idle, and .098 vent. The seloc manual has jet sizes...