Flood situation

1 bbl carb on 200 ci (6 cyl)... 1964? It was transplanted into a 62 Econoline.

I rebuilt carb and runs out just fine. BUT, when you shut it off, gas floods onto the buterfly and eventually seaps out via the throttle shaft and drips onto the intake.

I pulled the top off and LOWERED the float level ... same thing occurs.

I checked the fuel pressure and it's @ six and a half (6 1/2 lbs) - Too Much? It APPEARS to be seaping from between 'the carb and Venturi insert'!

What else am I missing here? Any suggestions?

Oh yea - Help!
Thanks people