Korg MS 20 Replacement Knob Large

Hi everyone,

Just wondering if anyone knows where i can buy a large replacement knob for my original korg ms 20.

I would prefer an original knob but not having any luck online.

To my knowledge, no one has made a reproduction of that knob, and it is long unavailable from Korg. Everything that used those knobs is a pretty desirable piece, so they are not things that get parted out.