Hey Bob, your explanation doesn't really match what I was experiencing. The notes weren't stuck from the start. They happened after I started tweaking the file -- as in adding TTS-1. And when I reloaded the file -- that I'd reconfigured with TTS-1 and saved that way, the stuck notes didn't reappear. At least not for the next several minutes when I was last listening to it. And there's still the matter of all the other weird stuff that happened.