Panzi,

The key to minimizing weight in the the fuselage was mostly due to balsa wood selection. I ordered 25% more wood than I needed so I could select only the lightest. The difference between the lightest sheets and the heaviest sheets for the fuselage sides was about 60 g. I adds up quickly. If I recall correctly, my 36 inch by 4 inch by 1/8 sheets were between 19 and 21 grams.

Good luck with the build.

Jeff