On a flare fitting it can be damaged if its over tightened causing a leak, and if its under tightened, then obvious a leak too.
They go together dry, and its not even a 1/4 when they mate to get them tight. If feels like its not even close to being tight, but it is.
If it does leak, then its either a bad fitting, or the line going to the flare fitting is bad or damaged.
You can use Teflon tape as a temp fix to see if that stops the leak, but i cannot say for sure if it will hold up to the fuel for long term use. I have used Teflon paste on my nitrous stuff, and it works well, but thats a totally different ball game.
But on your fuel lines, the bigger one is the feed, and the smaller one is the return. Kinda impossible to hook them up backwards on a stock set of rails.
There is a ground that bolts to the coil bracket. That handles the ground for the ICM (ignition control module).
If it is a damaged part, I am more than sure the maker will take care of you, after all...you paid for the quality of the part, and should receive what you pay for.
Holla if you need any help or more questions answered.
~F~
