Accelerator pump lever adjustment is pretty easy. You want there to be no play at idle so that the pump works the instant the throttle position is changed and to be able to fit a .010" feeler gauge between the lever and screw at wide open to ensure that it is not bottoming out. There is a wide range of correct adjustment because of the way it is designed.
The pcv port is 3/8. Usually the smaller 3/16" port right next to it is used for vacuum readings. Fuel probably isn't coming out of that port. The fuel inlet, bowl screws, bowl and metering block gasket and accelerator pump are places where fuel may leak and if the fuel runs down the carb the right way, it may appear as though it's coming from the vacuum ports.
Lawrenceville, GA