Hangar 9 Composite QQ Yak-54 2.6m Instruction Manual page 14

aileron serVo tray installation •
4
Remove pieces that are marked in picture above.
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5
Using an 80 grit sandpaper, sand the tabs off the tray pieces.
6
Apply masking tape to the back of servo hatch to prevent it from being
scratched while working on it. Mark the center of the servo hatch and draw
a line.