[DrumsUI] Individual pieces support

[Bekkr]

Okay, so... I don't know if this is a DrumsUI issue or not, but, as I use maybe 70% Drums stuff already, when I went looking for a hotbar replacement today, the Drums one was the first one to try out.

It looks good, and does everything I want, except:

The first (middle/main) 4 bars, on log out (or on /load_uisettings to a different toon) seem to want to default to 42px icon size (I set them at 44px).

Any idea what might be causing this?

Screenshots attached.