fuel pipe passageways

["Evangelos G. Makris" <emakris@hol.gr>]

I am trying to install a new fuel pipe and would like to
know the preferred passageway for it.

It's easy on the back but as I come to the front there's
the gearbox mount, the exhaust pipe (hot), etc.

Should it come up on the right side and cross over it
to the carbs or should it be all the way on the left side
of the engine/gearbox and appear under the carb without 
crossing anything - the exhaust is also on the left side.

Any help is welcome.

Regards,
Evangelos