I didn’t like only magnets to hold the main wing. To get a better connection I used some nails to secure the rear end of the wing.

The elevator and rudder are enforced with a carbon fiber using special super glue.

The elevator has a metal pin going into a brass tube in the fuselage.You can also glue the elevator in place. I did that after some problems flying.

The magnets for the main wing are super glued to a nail to get a better hold.