I don't have a hose attached to my vapor line.
I don't run a return line either for that matter. Just one line from tank to fuel pump to carb. Goes like stink
![:thumbup: :thumbup:](./images/smilies/thumbsup.gif)
I did have some issues with fuel delivery at one point. Turned out to be a dirty and clogged up petcock. Looking inside the fuel tank it looked clean around the base of the petcock but when I took it out I found it to be clogged up with fine rust dust. Cleaned it and the tank too and no dramas since. Change the fuel filter at every service as well.
Cheers