edlebrock carb for 400ex's

[lilgreen20]

i have a built 400ex that i race with, but my edlebrock carb sometime sticks at quarter throttle and wont open up. so i need to know if there anything that i can do to fix this problem

[PATTE440]

mine had the same problem, I went through the whole thing and couldn't find a thing wrong with it. It was been sitting on my work bench for years now. biggest waste of money i think i ever bought.