Hi Matthew,
here are some shots that should help you. As you cannot see on the pictures, there is one fuel hose that goes from each fuel drum through the tubes to be connected to the "permanent hosing". The fuel drum hose is not present while the drum is removed (most of the time).
After the connector, two hoses run through the drums supports then "merge" into only one that runs to the hull under the squarish cover on the right side.
I only hope I made myself understandable !
All pics come from my site. I think I have some better pics with the drums in place. I'll check this evening if you're not in such a hurry.
Olivier