Extreme Flight 78" EXTRA 300 ARF Instruction Manual page 20

21. While the Extra is still upside down let's install the rudder and finish up the tailwheel
installation as well as opening the exit hole for the incoming air that cools the batteries.
Apply 30 minute epoxy to the holes in the rudder post and to the rudder hinges. As you
position the rudder onto the vertical fin, be sure the tailwheel tiller arm is inserted into the
ball link. Push the rudder into position and wipe away any excess epoxy with a paper
towel and denatured alcohol. Use a #11 blade to remove the covering from the panel in
the bottom of the fuselage as shown in the following picture. Seal the edges of the covering
to the airframe with a sealing iron.
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