Scott,

I wish I could help in this scenario but I could not because I do not process a top of the line Yamaha arranger keyboard. However, Bob Gelman runs an excellent Yamaha PSR Styles Egroup (tons of messages everyday) and there are lots of Yamaha PSR-9000 owners there that can answer your question. Anybody interested can refer to this egroup URL:
http://www.egroups.com/group/yamaha-psr-styles

Paul Ip
from Texas