Hard HOT starting

Just put a 440 in the dart and I'm running into a problem where the car doesn't want to start after its warm and has sat about 30-60 min. Stone cold will start after two pumps and two cranks, turn it off and right back on no problem its that in-between time thats the problem. To get it to start I have to push the peddle all the way to the floor like its flooded and after keeping it running around 2500 for 10 seconds it clears up and idles fine.

From looking around it sounds like this is a problem that people are quick to blame on gas but there has to be something I can do.

Specs:
Stock 78 truck bottom
Trick flow heads
Hughes Whiplash cam
Edelbrock Performer RPM intak
Demon 850
MSD 6AL-2
MSD Blaster SS Coil
3/8 fuel line, 3/8 sending unit, and fuel filter between carter mechanical fuel pump and carb. All rubber line.

Thinking about adding a Holley insulted spacer to help keep some heat off the carb and fuel bowls...