Print one of each STL at 100% scale. Upper/corner visible face DOWN. Lower cups UP. Adapter pegs DOWN with support under the base. Follow https://codexmicro.diy/downloads/mounting-v5/guide.html. Test both joints before full plates. M3 x 8 screws + M3 x 4 inserts; joystick M1.6 x 10 screws + existing nuts. Physical fit pending.
