Completed drilling of the longerons and side skins to the bulkheads. Placed the firewall in position and used the forward bottom skin, (F972), to set the proper distance and alinement. Marked a centerline onto the firewall "lower stiffener" and used the bottom skin to match drill the firewall to the skin. NOTE: a few of the holes are NOT in a straight line, and do not line up with the marked "Centerline" on the firewall stiffener. (Another head scraching moment).
