Reply to Chroma Caps for Numark 4trak?

Hi, the title says it all.
I see that the controller isn't in the list of supported controllers but I know that the 4trak has the same knob and fader mounts as like the S4 for example.

So does anyone know if the knobs fit or if the rub up against the controller or if the get too crammed, etc.

Thanks!