I oiled all cylinder walls, replaced all hoses, rebuilt fuel pump, replaced impeller, and then sprayed fuel/oil into each carburetor. She cranked right up, ran rough for a while but then she smoothed out. All the cooling water is exiting through the exhaust and the two ports just below the power head, non through the pee hole. I kept it below 1,000 RPM's, it was on muffs. Is this normal? This the first time it has been cranked in several years.