GREAT PLANES Profile 38 Instruction Manual page 17

15. Glue the die-cut 3-ply receiver battery tray to rib
W-1 and the sub-trailing edge.
16. From the 1/16" x 3" x 30" [1.6mm x 76mm x 762mm]
balsa sheet, cut three pieces 8-1/2" [216mm] long for the
wing center sheeting. Glue one piece against the leading edge
sheet, between ribs W-1 and W-3. Mark the location of the
notch in rib W-1. Then, glue on the second sheet.
17. From the third sheet, fit and glue two pieces between
the trailing edge strip and the previous wing center sheeting.
18. From the 1/16" x 1/4" x 24" [1.6mm x 6mm x 610mm]
balsa stick, cut and glue cap strips to the top of ribs W-4
through W-7.
19. Glue the die-cut 3-ply aileron servo trays and aileron
tray supports to ribs W-3 and the bottom of the main spar.
20. Glue the die-cut 3/32" [2mm] balsa sub-ribs W-1B to
each side of the W-1 rib over the notch.
21. From the 1/16" x 3" x 30" [1.6mm x 76mm x 762mm]
balsa sheet, cut three pieces 8-1/2" [216mm] long for the bottom
wing center sheeting. Save the remaining sheet. The two
forward center sheets must be trimmed to fit around the landing
gear rails so that they fit flush with the top of the rails.
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