440 Help Needed

If you drilled holes in the throttle blades and it didn’t get the blades closed then drill the holes bigger. You have to get the throttle blades closed. Then you have to clean up the idle circuit. I need to read all the thread again, but I wouldn’t touch anything until the throttle is shut and you have cleaned up the idle circuit

I did not drill into the throttle blades. I was told if I plumb into the PCV port of the carb Id achieve the same thing. I made a manifold that had multiple small holes drilled into it. as it was running I tried to expose more and more to see if I could expose less of the transfer slots and nothing changed.