I have a problem with my Holley 600 (4160)

Merry Christmas to all. Thanks for the information on a fix for this small problem. All of you are right:

1. No problem with a cold start.

2. I do not have a drop down air cleaner.

3. I have not checked my lines but I have had this same set up for over 15 years. That is the main reason for asking for help. What could possibly have brought this issue on?

What happens is that after I have driven the car for awhile and I shut it down, if I start it back up within a couple of minutes it starts right up. If it sits for any longer than that it will not start unless I hold the pedal to the floor, as if it had been flooded. I am going to do all the things suggested and I will get back to you guys.

Thanks