Eachine Antenna-Blind-Plug

I came across THIS in my search for models (for my E520S) and was initially irritated and shocked after opening the controller.
The antennas are fake :O
I tried on stanoba's model first, but it didn't fit properly, so made one to my own measurements.
Now it fits perfectly.

i made 2 versions of the stopper, a normal one and one with my logo
(if anyone else wants it :D)