Finished riveting the roll bar brace onto fuselage. Riveted the side skins and stiffener at roll bar. Cleo'd together upper forward fuselag skin. Drilled hinge pieces at firewall then drilled all called for #40 and #30 to final size. Deburred, dimpled, and countersunk as neessary. Skin is ready but will stay off untill instrument panel is further along.