Tip:
replace the whole metal line with a semi flexible plastic tube that resist the fuel....
I did this to a buggy and it still holds on for at least 15 years.
The line runs in the tunnel from a new drilled hole with gommet , put a wire in the tunnel and feel at the end to pick it up. with that wire you pull the new line in the tunnel...
To replace the metal line you have to cut a whole in the tunne; the new tube is hold tight to the tunnel with metal tabs.... if you cannot attach the tube it will rattle in the tunnel every street bump you take....
and it is not an easy job..
greets
ZELENSIS, coachbuilt body from the 50's on a vw platform made in Belgium. Peter the heb detective