I am working on a piece for concert band that calls for a large gong. I have 2 Aria banks open with the gong staff in bank 2, channel 9. Using a single line staff, the large gong is directly on the line. However, although the studio view shows the gong is being played, there is no sound. I have double checked that the gong is assigned to the correct bank and channel. What can I possibly be missing?