[STEVE-O]

Trying to educate myself on carbs. I have a holley 770 ( vacuum secondaries, electric choke), on a Roush 402. Seems to idle fine and if i accelerate evenly, engine and car accelerate OK. That is , seems OK in the range that I dare to accelerate.
However if I'm around 2000-3000 rpm and accelerate more quickly, as if to pass for example, I get a bog/hesitation (?). I can hear some uneveness in the sidepipes.
From reading and research at the Holley site and elsewhere on the internet, I believe it might be that i need a different spring in the carb secondary diaphram.
Before I screw something up that doesnt need changing, does this sound like the issue?? If so, would I go with the next stiffer spring, for slower opening of the secondaries?
thanks