E-flite J-3 Cub 25 ARF - Manual (Page 27)

Note:.Turn.on.the.transmitter.and.verify.all.trims.
and.sub-trims.are.centered..Next,.plug.in.the.
aileron.servo.and.verify.it.is.centered.for.the.
following.steps.
  18. Mark the pushrod where it crosses the
control horn using a felt-tipped pen.
  19. Bend the pushrod wire 90 degrees at the
mark made in the last step. Drill a 5/64" (2mm)
hole in the servo arm and pass the wire through
the hole. Secure the wire using a pushrod wire
keeper. Cut the excess wire using side cutters.
 20. Repeat Steps 1 through 19 for the remaining
aileron and servo.
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