Can anybody solve this hot start issue? I'm out of ideas!

Maybe the fuel line itself is heating up, despite the insulation. This happened to me some years ago while I was stationed in Oklahoma. The excessive heat and the cheap gasoline conspired to pressurize my fuel bowls. If I remember correctly a cool can and some minor rerouting of the fuel line solved the problem. The temperature is definitely as hot as it was then ....and the gas is even worse. :banghead: