I riveted the three outer brackets to the top skin. These brackets are used to screw the instrument panel to the top skin. I drew a centerline on the firewall flange.
The top skin was clecoed to the fuselage. I used new #40 drill bits to drill holes thru most of the firewall flange. I kept dipping the bit in cutting oil before each new hole to help the bit get thru the stainless. A drill bit only lasts about 12-15 holes.
The firewall flange has a centerline drawn on it to line it up with the top skin
The right side drilled to the firewall flange
A few spacers were placed between the top skin and the firewall flange. These will not be used, though
