For all you engine guys

[drew8mc]

I'm a newbie at wrenching, so I am trying to learn as much as possible.

I'm trying to diagnose a poor idle in my 327. Below is a video of the vacuum gauge coming directly off the manifold. From the verbal descriptions, it sounds like this is a vacuum leak. I have checked all over the carb gasket, manifold gasket, throttle body, and all hoses. I took off all hoses and inspected each one, even recut the ends. I've sprayed the area over and over with carb cleaner and I can't find any leaks. I hear no hissing sounds.

https://goo.gl/photos/LsXgjzLkKYtYZhP6A

The next step is to check my timing, but my vacuum is so low, I'm guessing this is not a timing issue. Should I just pull the manifold and reseal it? It looks to be sealed all along the edge with silicone or some other sealant. I'd love to know what all you guys think.