A couple of other problems but not common are the carb being bolted to the
intake with excessive torque and fuel well plugs leaking. If the carb is
overtightened with the four bolts mounting it to the intake the air horn
will be bent creating fuel leaks and vacuum leaks. Always change the base
gasket when installing a rebuilt carb for it to create an air-tight seal
between the carb and intake. The fuel well plugs can leak and the best way
to fix them is to use an epoxy to seal both wells. The wells are located
under the bottom of the fuel metering rods.