Possible carb problem or fuel pump?

[slam59]

Not sure what to look into first. When starting my 74 c10 it takes a few tries then starts right up. And after that you can turn it off and just turn the key and starts up right away,no matter how many times you do that, starts right up, the way it should. But if after that, you pull up and stop a bit, like 10 minutes or longer, it gives a hard time starting. I have to try like 3-5 times, and its like there's a slight odor of gas. Could it be the fuel pump is not doing its job or maybe on the carb, is'nt there a line that keeps fuel in the bowl? Or maybe the floats? Last night wife and I were at the sonic burger drive up, like the old time burger shops where you order from your car and they bring you the food. We sat parked and ate, for like 30 mintues or so and man, it took a good 4 tries to start it, almost thought it would not start. It is an
Edlebrock 1406 4 barrel carb.