Drill #40 & cleco F16-04 Support Angle Reference to F16-05 Aft Tunnel Angle. Drill #40 & cleco F16-07 Shear Plate to F16-05 Aft Tunnel Angle, F16-04 Support Angle Reference. Disassemble all. Dimple & counter sink all & cleco to make F16-03 Aft Tunnel Web Assembly. Install & cleco in place F16-02 Forward Tunnel Zee & F16-03 Aft Tunnel Web Assembly. Drill #40 & cleco top of F16-02 Forward Tunnel Zee to F16-03 Aft Tunnel Web Assembly.