Great Planes Extra 300S 40 Kit - GPMA0235 - Manual (Page 24)

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3. Perform the same procedure for the remaining 3/16"
wing root spacer between the other side of the wing and
the fuselage.
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4. Remove the wing, then tack glue both wing root
spacers to the fuselage in the locations you marked with an
approximately 1/32" thick shim between the spacers and
the fuselage.
After the wing is mounted to the fuselage the
wing root spacers will be permanently glued to the wing for
a perfect gap between the wing and the fuselage sides.
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5. Place the wing back in the fuselage and center it. Use
a ballpoint pen to accurately mark the TE of the wing
directly above the fuselage sides.
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6. Use a bar sander and a hobby knife to remove material
as needed between the marks you made (indicating where
the wing meets the fuselage) until the top of the wing fully
contacts the fuselage sides and the TE clears FBP-A.
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7. Align the wing by sticking a T-pin through the center of
the aft end of the fuselage bottom. Tie a piece of
monofilament line to the pin. Pull the line to the wing tip and
put a piece of masking tape on the line at the wing tip. Put
an arrow on the tape, then slide the tape on the line so the
arrow aligns with a reference point, say the end of the
trailing edge sheeting. Swing the line over to the other tip
and see if it aligns with the same point. If necessary, shift
the wing and mark the location of the tip by adjusting the
position of the tape on the line. Do this until the arrow on
the line aligns with both reference points at both tips.
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8. Now that the wing is accurately aligned, adjust the notch
you made at TE if needed so it clears the fuselage sides.
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9. While the DP is clamped to F2-A and the wing is
accurately aligned with the fuselage, use medium or thin
CA to glue the DP to the wing.
Note: Disregard the shaped wing root spacers in the
following photos. They should still be tack glued to your
fuselage and not yet shaped to fit the wing.
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