[Chevelle-list] Carb leak

[Bill Lessenberry]

I bought a Quadrajet from a guy, the fuel inlet threads had been 
helicoiled.  I installed it on the car yesterday and it's leaking 
fuel from the inlet.  I've tightened the 1" nut as tight as I dare, 
and it still leaks.  It has a nylon seal washer on it and the end of 
the helicoil may be sticking out a little too far. It's NOT leaking 
from the fuel line, it's definitely the inlet fitting. Anyone on the 
list ever run into something like this?  Any ideas on a fix without 
sending it out to a rebuilder?  Thanks
BillL