Heat soak? Edelbrock carb & air gap

Although I have been working with ignition and will be upgrading it soon, I feel confident that my timing is dead on and the engine runs at a perfect 180 to 185. I just got done installing the insulated carb gasket so we will see if that helps. This issue only happened a couple times and hasn't effected starting or normal driving conditions. It only happened after starting it hot and then going wot shortly after.