I took the carb off and examined it. I appears to be a flaw in the casting. It drips about every two minutes onto the exhaust manifold. I applied JB Weld to the outside surface because the inner surface is too hard to get to. I'll know tomorrow if the JB holds.
Wish me luck.
This is a n.o.s. carb, never been used, we'll see.
Thanks,
Jim