Of course, slapping palm to forehead!
Evan, cant see any gas caps anywhere on the floats.
So have done some to the underside radiator ahroud. The plastic just looked toooo thick so I did my usual by just tapering the front edge. The plastic part for the vert separation piece was just too thick so I used card. I thinned the edges of the top of the cockpit as well.
The prop is a fright so I did a lot of shaping, ALL over. A line to add to spinner, and screw heads, little drill marks.
The throttle quadrant only had the back arm, could be mixture. So I added a piece of card and an arm for "throttle".
I sailor on, no tank! It's just that I found detail photos of the pick-up tube and it would be worth scratch building!!!