have you checked the 10 cent hose that drove me nuts ?????? sounds like the same problem i had...... remove the fuel pump from the tank and check the little 2 inch long hose that goes from the fuel pump the the pick up tube in the tank mine had cracked and when the car was cold would start right up when the fuel warmed up the crack would expand and dump the fuel back into the tank when you would try to start it when warm it was a no go when it cooled down it worked fine

it dosent have to be surrounded by water to be an island