Gas pouring out of carb

75 Dart Swinger
Holley 1945 carb

So my car has been driving great for most of this year. Suddenly out of nowhere I went to start it and it started OK but seemed to be idling wonky. Then when I hit the gas to engage the kick down it just died and then I could hear gas coming out of the carburetor at the base. So I took the carb off and inspected it. There were two screws in the float bowl that were loose. So I tightened them down. I figured that was the issue. But when I started it up it did the same thing. It’s not a trickle it’s like an avalanche. The carb was rebuilt probably a year ago. The gasket on the bottom is still in really good shape. I’m totally baffled.
Here is a video moments after I started it and then killed it.