Google Fonts for Part Names with Flats

I have been making band and orchestra scores and parts, and have selected custom fonts for "branding" purposes. But the font that I want to use on part names (Montserrat) ON THE EXTRACTED PARTS puts a lot of extra spacing around the flat symbol in instrument names, when I'm saying I want a B-Flat Trumpet or Clarinet, for example. (See upload.) Any suggestions for either improving the placement or other fonts that I could use? Worst case (which is hardly horrible) I can just keep the part names/header displayed in FreeSans, but I would really like that customization.