Servo bay hatch and triangle stock hard wood.
Glue in the triangle wood stock with 5 minute epoxy.
Make sure that the servo hatch is flush with the wing surface.
Mark the crew holes with a thin pencil and
Drill appr. 1.5 mm holes for the fastening screws.
Aft he holes have been drilled put some thin CA glue in the
holes and let it dry
Mark the holes for the control horn and
Drill through with 1.5 – 2mm drill