The engine runs great cold. But after it heats up and I turn it off it stalls under load. If I try a few times I can get it moving again and it will run great. I just have no power from a dead stop. Carbs were just cleaned and new racor water sep installed. No water found in gas on last trip. Ran it for one hour at all speeds. Fuel has been in since Feb with Stabil ethenol treatment. This is an on going problem that has costed over 1,ooo and still can find a fix. Thanks for any imput.