I have remove the powerhead of my Evinrude 4,5HP, I got a Johnson 4,5 HP now and has 100-105 PSI on both cylinders. That 4,5 Evinrude had 50 PSI on the top and 70 on the bottom cylinder. Engine was overheating even if the water was coming out well fromm pee hole. It was running not bad the first...