GREAT PLANES Super Stearman Instruction Manual page 16

8. Locate the pin holes and cut the covering from the blind
nuts in the bottom of the top wing. Four are located in the center
of the wing and two are located at each end of the wing.
9. Install the center cabanes with 4-40 x 1/2" [13mm]
socket head cap screws and #4 lock washers. Be sure you
mount the cabanes as shown.
10. Install the four remaining brackets in the blind nuts at
the ends of the wing.
11. Place the top wing onto the "N" struts. Attach the top
wing to the "N" struts with 4-40 x 1/2" [13mm] phillips head
screws, #4 washers and 4-40 nylon lock nuts the same way
you installed the strut to the lower brackets.
12. Set the fuselage on the firewall. Look at the relation of
the top wing to the bottom wing. Be sure the top wing is
parallel with bottom wing. Adjust the top wing as needed.
Then carefully set the fuselage back on the landing gear.
13. Without disturbing the top wing, push a T-pin into the
fuselage through each of the cabane mounting holes. Push the
pin hard to verify that the mounting holes are positioned over
the hardwood rails. If you do not find hardwood and only hit
balsa wood, check to see if you have mounted the center
cabanes properly. If you have the center cabanes backwards
they will not align over the hardwood rails.
14. Drill a 5/64" [2mm] hole through each of the four
mounting holes in the center cabanes. When you drill these
holes you must be drilling into the hardwood rails located in
the fuselage.
15. Install and then remove a #4 x 1/2" sheet metal screw
into each of the four holes. Apply a couple drops of thin CA
into each of the holes to harden the threads. After the glue
has cured permanently install the screws into the fuselage.
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