5.7GX- e won´t start when warm

[Flood]

Starts perfectly when cold, running fine. Anchoring, taking a bath or whatever for a couple of hours. The engine will not start properly again until it has cooled down. So far I have been fixing it by opening up the throttle to max, turn the key and start cranking until it starts. This is the way to clear a flooded engine as a max throttle at low rpm will shut off the fuel and the system will dry out. It works but it is anoying and I would be thankful for any suggestion about how to fix it.