Changing the size of the slash separator in Chord Symbol

Hello. Is there a way to reduce the size of the slash in the chord symbol separating the chord from the root? I have figured out how to alter the font/size for every other element in the chord symbol except for this. I thought it was in Font Styles>Chord Symbols Altered Bass Separator Font but changing these settings doesn’t seem to make any difference.

See this thread.

Jesper