problem with fuel or carb set up

[phase_one]

I recently switched from points to a HEI dist. I have a 250 and used the info off of this board. It went well except i can't get the truck to run If i poor gas in the carb it will start up and run until the gas is used up. I thought of a fuel line problem. I took the tank out and used my air compresser to clean out the fuel line, sending unit and fuel pump, I even replaced the fuel filter. The carb was a rebuild from auto zone and worked when I installed it. The problem is there is no fuel when the gas pedel is pressed. Is the change from points to HEI affecting the vacum lines? Any help would be appreciated.