For those of you that have fuel lines that have a leak you can't seem to get rid of (at a flare fitting) , Wick's sells a little insert that you install to help eliminate such problems.
I had one fitting that I absolutely could not get to stop "weeping" fuel. I had it off and looked at it several times before seeing a hair-like scratch across the tubing flare. I filed the first half of the flare off with a file, re-flared the tube, and the leak was gone. I think the little insert would have fixed the problem also. Larry Flesner