Hello Folks.
I recently replaced fuel filter in Rochester 4 barrel carb;
it's inside carb : long paper element.
Vehicle is 1981 Pontaic Parissienne, 305 - V8 engine.
After first installation, there was noticeable dripping of fuel at the
small, outboard nut; the one on fuel pipe.

- I removed fuel line + added teflon tape to threads of small nut;
 now there is a slight presence of gas detected

I used new plastic gasket on inner, large housing nut.
I don,t think that is source of leak.
It seems to be coming between fuel pipe outside diameter + small nut
inside diameter.
Presumably flare on end of metal fuel pipe is not mating correctly
with outside of large nut.
Any ideas re: solving leak?
I've thought about reinstalling with " Seals-All " sealing compound
on inner diameter of small nut ; or perhaps installing new fuel pipe
from pump to carb. The present pipe has a "SET"; i.e. it is somewhat
difficult to line it up with carb housing to reinstall.
I don't know if this has anything to do with problem.
No leaks before re + re for new filter.
Please reply to NG.  Thanks, -JS