Pre-drilled uprights to through rear spar. Cut out left and right seaat back uprights to fit between lower seat back and baggage floor suppor. Drilled seat back up rights to baggage shelf support. Shapped and trimed 2"L" Angles for fuselage side skins to support baggage shelf. Pre-drilled and clecoed in place. Trimmed rear spar uprights to fit under shelf.
