Reduce space between Callout values and Reference labels in Card (new)

Here is a card (new) visual that has a callout value, "YoY Growth", and three reference lables.  As you can see, the space between the callout value and the reference label is needlessly large:

I can't find anything that intentionally adjusts the space between the two.  I can, however, unintentionally adjust the space in the following ways.

1) I can turn on the Divider for reference labels, which seems to split the space between callout values and reference labels 50/50:

This gives me a 50/50 split, but I want to change this ratio to, say, 30/70.

Note that I'm aware I can change my reference labels to be rows instead of columns, but while this helps with being able to see the reference label titles, it does not help with the spacing (reference labels are left aligned, meaning the split between callout values and reference lables is ~70/30):

2) Strangely, the other way to adjust the spacing is by changing the Layout Overflow (to either Paginated or Continuous, it doesn't matter which, so long as you change it to whatever it wasn't):

Which results in changing the spacing to 50/50 between callout values and reference lables:

There's no real reason that should affect anything, so I assume it's just a quirk that might get fixed in a future update.

All other attempts at manually adjusting the spacing have not worked.  There is no combination of Padding or Alignment adjustments that seem to affect the spacing in any way that I've been able to find.  

If anyone has found anything, please let me know.