Yea, I've been definitely to fussy
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
Just bought a new tunable inductor like this one:
![Tunable inductor for Moog Theremin](https://www.eevblog.com/forum/index.php?action=dlattach;topic=431553.0;attach=2288629;image)
Removed the wire and cut away the base with pins, the ferrite core and its plastic sleeve fits perfectly inside the original tunable inductor.
The inductance range is close enough
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
Great advice, thank you!