Holley 3310 750cfm Rebuild

[C20-67_N_MO]

Bought an engine that has this carburator and it does not idle very well.

Tried playing around with the acc. pump adjustment arm and seemed to help a little. But the engine keeps "falling on it's face" and I am thinking it is staving for fuel and the vacuum secondaries are not kicking in or working at all.

So my question is how difficult is it to go out and buy a rebuild kit and install it and get it working correctly? Or should it be sent off to a professional that knows how to properly set it up and rebuild the carb for the engine?

Let me know what my options are as new carbs are too expensive these days!

Thanks!