1. Locate servo position, we
don't recommend installing the
servos under the carbon front,
that'll result in weakling the wing,
you can find a carbon thread tow
was embedded as spar, use a
servo as a template to draw the
outline of the servo
2. Remove the skin and foam
3. Drill tunnel for servo wire
4. use 4mm brass tube as a
drilling tool, file the top as the
picture shown