Thanks, Charles.
The fuel tank is a 4 oz. Brodak's (non uniflow). No timing was done (yet) since the plane owner is in his first flying steps, so we just filled up the tank to check first for the "dizziness sindrome"

I use nitrate dope all the way in all my planes (plain old good quality aeronautic dope made in Argentina, with no specific brand) For the colors y use the same dope adding nitrocelulose pigments. On top of that, a couple of thin coats of PPG two part poliurethane automotive clear, which is absolutely fuelproof up to 15% nitro.
The checkerboards are Monokote self adhesive decorative stripes. The license is vinyl.
No half ribs were added. The plane was built strictly as it comes in the Brodak kit.
The weight? I don't know! My scale was broken by the time I finished the plane.