How are you attaching the rare earth magnets to the fuselage? I have tried epoxy and hot gluing small rare earth magnets in an EPP foam plane, using two magnets to make the connection but the magnets connect and one is pulled from the adhesive. I tried placing some adhesive slip resistant tape on the back of the magnets then hot gluing it in place but the magnet is still pulled free of the mount. I have not tried using only one magnet and a thumb tack or washer.