On that late afternoon, first official assembly work on RV-8 s/n #80414 fuselage is finally happening. Firewall structure was cleco to Firewall web F801A-1, then all holes were drilled full size
While being in a hurry, I did not drill properly dia 1/4" hole in F801L and F801H-L-1. Resulting hole was ovalized in F801L and Low E/D in corresponding F801H-L-1 (Ref RNC 80001)