You have the right idea with hardening the holes with C/A. Lay out the positions of the holes, drill the holes but make them a bit under sized. Then connect the dots with the slot so you can move them. Clean things up with some fine sanding tools. Use eyelets with a flange on one end, and use these to size the holes to final fit. If you are happy with everything, then touch up the holes and the slot with thin C/A sparingly. Then take the same sanding tool you used before and to9uch up where the glue flowed and clean them up a bit. The glue soaking in and kicking off will raise the grain a bit. Make sure the cable will pass through the slot. Use a small rat tail file to clean up the holes, and test fit the eyelets. They should have enough friction to stay in place when you work the controls. Pressure from the lead out should not make them move. If you think they are too loose, just dab in another drop of C/A and rework the hole. If the wing had a flat plate tip, a piece of plywood makes a better base for the holes and the slots but still harden the holes with thin C/A to fuel proof them if for no other reason.
Type at you later,
Dan McEntee