GREAT PLANES Ryan STA EP Instruction Manual page 22

13. Glue the die-cut 3/32" [2.4mm] balsa formers F3A to
the wing saddle.
14. Glue the die-cut 3/32" [2.4mm] balsa formers F5A to
the wing saddle.
15. Glue the die-cut 3/32" [2.4mm] balsa former F7A
perpendicular to the fuselage base.
16. Glue the die-cut 3/32" [2.4mm] balsa former F8A
perpendicular to the fuselage base.
17. Cut and glue a 3/8" x 3/8" [9.5mm x 9.5mm] stick to
the front of the die-cut 3/32" [2.4mm] balsa former F9. The
stick is centered on the former and runs from the stab
saddle slot to the bottom of the former.
18. Glue the die-cut 3/32" [2.4mm] balsa lower stabilizer
saddle (LSS) to former F8A and F9. Glue former F9 to the
fuselage base aligning the fin slot in the base with the fin
slot in F9.
19. Glue the 3/16" [4.8mm] balsa upper and lower side
stringers in the notches from former F1A to F9. A notch
needs to be cut in the stringers at former F6A to allow the
stringers to bend past the former without bowing out in front
of the former. Note that the lower side stringer ends at
former F7A.
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