RC Groups North American P-64 SEMFF Combat Plane Build Manual page 9

Step 5. Add KF Step
Moisten wing and
apply glue to the KF
step. This assembly
will need to be taped
in place to prevent
shifting and allowed to
dry. Use weights on
top to keep panels
pressed together will
curing takes place.
The 9g servo may be
installed at this point. It
seats all the down
against the wing panel
and inside the KF step
panel.
Note: Servo helps to
keep other parts in
alignment.