RC Guys Super Decathlon ARF Assembly Manual page 17

NOTE: Strengthen the hole by applying a few drop s of thin CA glue to reduce the amount of balsa compression.
Secure the trumpet assembly to the Aileron. Do not over tighten
the screws.
Connect the control rods to the Servos using the clevises or Z
bends.
Secure the Servo and hatch assembly to the Wing using the supplied
hardware, 4 x wood screws.
Align the Aileron control rods with the Servo control horns and mark the
location of the control trumpets so that the base is at the edge of the
Aileron beveled edge.
Drill a 3/32" dia. hole on these marks through the Aileron.
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