I have rebiult my 84 merc 150V. Carbs boild and rebuilt, bored 2 cylinders and honed 4, 2 new .030 oversized pistons, all new berrings, seals, gaskets, hoses,rings, cooling parts, STABILIZATION MOD (the cause). Now I don't know if I should leave the oil pump or go to mixing myself, what do you...