Great, thanks, Noel! This helped. [F5] didn't show any strange things at all on earlier inspection for the jazzy soloist line, but Reset all bars (or the cryptic Dutch "Terug Alle Maten") did the trick. As soon as I see a red horizontal line, I know how to fix it. Still strange that a metal guitar solo (396) is able to overrule the red line. Anyway, I'm happy now.