Yeah Dato1000 just like 1200rallycar said, the fuel bowl breathers need a boost reference. Basically for a holley 350 you just need to make a hat to cover everything that was originally inside the aircleaner.

1200rallycar its not a good idea to overlook the fuel that is leaking from your carbie.
One important thing to remember is, the fuel isnt leaking because of fuel pressure, it is leaking because boost is leaking and this is causing a vacuum effect and sucking the fuel out.
In other words your engine is working normally trying to draw in fuel but the fuel is being sucked out by the leaking boost. This is making the Air/Fuel ratio leaner. The engine might be going hard because the combustion event is the hottest it can get. But white hot is too hot.