BUT there's a solution. Notice on the Controls tab of ARIA, there's a Length knob, controlled by CC21 (for the DAW users reading this) - That needs to pushed up just a tiny bit, approximately to 54% from its default position of 49%. On a routine basis I need to adjust that control, or get that chopped off sound in the strings which is unfortunately commonly heard in Garritan projects now.
You're probably not accustomed to dealing with those kinds of controls through Finale, but I'm sure you can. Push that up - I can pretty much guarantee the issue you're talking about will disappear.