holley 2 barrel issue

[1971beastse]

hi have a 1971 charger se with a 400 has a holley 2 barrel
i have fuel spilling out of the vent line the carb, it was just rebuilt new needle seat float and everything else i set the float level and double checked everything, i noticed the pin that holds the float on is plastic it doesnt seem oem to me, i just bought this car and just need to get it running good enough to move it around for now any input would be greatly appreciated thanks

[DynoDave]

Nothing specific to that carb....but I rebuilt a friends Roch. Q-Jet once. After the rebuild, the same condition you describe. Took it back apart, and to make a long story short, I had followed the float measurement in the rebuild kit. It was WAY off. Reset the float to the spec. in the Motors manual, ran like a champ.

So I'd double check that you made the measurement correctly, that you have the correct value, and that the float/needle are not sticking.