So made it out to lake yesterday after replacing water pickup, impeller and maintenance items. Engine runs fine and will rev up nice but as soon as I put in gear and go 100yards she bogs down at anything higher than idle speed and will kill... I can tool and pubs at idle speed but anything higher doesn’t work. Checked oil and looks milky froth on dipstick which wasn’t case when I ran it on mufffs as well as milky cream on underside of oil cap. The black 3/4” hose to top of carb seems to be spitting a fair amount of steam so my thought is I need to replace the exhaust manifold as I must have a water leak somewhere, coolant levels look good and engine temp stays good. Any thoughts if this would cause engine to die under load and that I am on the right track?