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9.
Laminate the two motor mount pieces together (3M 77 spray adhesive
recommended). After the glue is dry, glue in the hardwood motor mount
with 5 minute epoxy and let it cure. Check the fit of the elevator servo
used at this time (before you install the motor mount), and trim or shim the
foam as required for a tight fit.
10.
Glue in the aft motor mount (5 min epoxy recommended), making sure it
is aligned with the centerline drawn on the aft fuselage bottom.
After the glue is cured, sand all of the bottom fuselage corners round.