You mention Rivets on the Mosquito. There were no rivets on the Mosquito. Look at photos carefully and you will not see any, or panel lines. The mossy was wooden, two thin sheets of ply with grain set at 90 dgrees with a thick sheet of balsa in between. These were set in place against the bulkheads and faired in place. This gave the mossy a smooth surface on the fuselage, wings, tailplane, nacelles etc.