Cut an L angle 55mm long. Position the L angle on the Upright under the Baggage Floor. With a #40 drill bit, back drill through the Upright into the L angle and Cleco. Cut an L angle 100mm long. Position the L angle on the Flaperon Control Cover under the Baggage Floor. With a #40 drill bit, back drill through the Flaperon Control Cover into the L angle. Back drill through the Baggage Floor into both L angles and Cleco. With a #30 drill bit, expand the holes and Cleco.