Popriv,
Yep, that's what you need to do to it. Rough up the metal of the torque rod with sand paper to give the epoxy something to "grip" to. Put a dab of epoxy in to the hole in the aileron and a little bit in the groove as well. A little tip to help you out. Put a piece of plastic sheeting (saran wrap if you have it) between the torque rod and the trailing edge of the wing as you epoxy this in. This will keep any epoxy from gluing the torque rod to the trailing edge of the wing.

Ken