Stop in for a cup of coffee

Not really. You cannot give it throttle or it bogs down and falls on it's face. Ease into it and it will go fine.
My first guess on that would be the accel pump or fuel, but...
There are some vacuum lines with bolts in and some other things. It runs fine for the most part.
depending on the vacuum set up could be a delay in the spark advance or some other device.

You'll figure out, or we'll all come over for tuning party...
is that a good thing or threat ????