Fat Shark Teleporter V4 to Skyzone 04X foam adapter plate.

thingiverse

Now you can put nice foam on your Teleporters and ditch the eye cups. Print face down and use supports by the strap notches. Print solid. It's a very tight fit. No adhesive needed. Install faceplate starting in the middle and work your way out. Then carefully apply the velcro, also starting in the middle and working out. Good luck!