This is GREAT now mpl - seriously, it looks so nice and crisp in 4k, thank you!
https://stash.reaper.fm/37535/toolbar%204k%21.png
The refresh GUI action works perfectly, even when attached to the mousewheel swing adjust action. Everything now updates instantly
Just FYI - if you check the pic you'll see the small font used at the top of the persistent left side buttons (REL/LINE etc...) doesn't scale up with everything else, so those words are still very small. It's really NOT a big issue for me at all, I'm really happy this toolbar now, I just thought it was worth mentioning.
I'm sending another donation your way... please keep uploading these awesome scripts of yours!