I planned to coil the fuel vent line 3 1/2 wraps and exit the wing fairing rather than run it in and out of the fuselage. So, I remembered to put the AN818 and AN819 (coupling nut and coupling sleeve) on the vent tube ends before I flared each end. Its soft tube and with the use of a coiled tube bender, I hand shaped almost 4 loops from the tank vent exit, staying inside the tank profile and clearing the fairing nutplates. When done, I slit some flexible ribbed tubing and encased the coils to clean it up and keep it solid. I'll put a few zip ties on to keep it from moving. When enclosed, it becomes very secure.
A work in progress.
Soft tube will snug up nicely.
And, thats a wrap for left fuel tank. Exit coupling is on backwards in this picture.