is this right??

on my /6 i have a single barrel holly carb. sometimes when i start the car (and the car has already been driven and warmed up) it still needs a pump or two to get it to fire. it acts like its cold when its right at running temperature. this usually happens at gas stations when ive filled up, so im not low on fuel or anything.

i have another carb in my shed and comparing the two, the shed one looks nicer, but i dont know the contiodion. just it looks better.

does anyone have a clue what could be wrong with my carb? should i swap in the other?