Carburetor help

Need some help from the Pro's. My 360 (Edelbrock 4bbl) has to be primed to start, and when it fires I have to feather the throttle for it to stay running. A while back I noticed rust particles in my clear filter, so I changed the tank and fuel line. I thought it was causing the running problem , but I did not stop. I pulled the fuel line off and turned it over-the pump was pumping. Check for vacuum leaks-nothing there. After I shut the motor down, I opened the primaries and fuel was not spraying down the carb throat. Need some help?