Hello, Let me be the first to welcome you to iBoats! Did you check to see if the choke is fully open when the engine is warmed up? A stuck choke will allow excessive raw fuel to get dumped into the intake. Whatever don't get burned off will wash down the cylinder walls and might wind up in the crankcase. Could also be that you have ANOTHER defective fuel pump. Just because parts are new out of the box, doesn't always mean that they will work like new!
