Could it be a overheating coil..?
the high temp is making your fuel flow less,, im assuming you have stock size fuel line ?? first i would insulate the fuel lines in the engine bay,,cooler fuel flows more volume,less starvation,,also a thick carb base gasket made out of fiber, or insulator material will help,, i would consider a after market mechanical fuel pump,if you have any mods to the motor,,,
