Does the vent tube on your Holley carburetor look like this? This one was damaged in shipping.
It’s an easy fix using an easy-out tool, like the #4 pictured.
With the tool, you can remove and install the tubes. Just be careful not to crack the mounting boss, or you’ll end up with more trouble than you started with.
Also, do this by-hand, do not use a power tool! You need to have a feel for how the progress goes – once you do it, you’ll know what I mean. Unlike engine torque, more is not better here – take it easy.