How do I lock or save my Brushes favorite Palette?

[reagent]

Hello all.
In the upper right, there's a set of set of 8 "Favorite" Brushes slots.
Every so often, when hovering or clicking a Brush, it will be removed from that set of 8.

How do I "lock that section down" so I can keep the brushes from being removed?
Or at least SAVE it so I can reload it if there's a mishap?
Secondly, is there a way to double the row to 16 favorites?

And, and has Bleank or anyone ever done any commercially available packages of brushes?
I've never come across any.
Thanks in advance.