For all of you struggling to understand the Yamaha keyboard system, I can thoroughly recommend the following website:-

www.yamahakeyboardplayers.com

It is run by a lady named Eileen Lowry who knows as much (if not more) than some of the tech guys at Yamaha. She also produces Instruction DVDs on how to use the Yam keyboards which are clear and easy to use. The best thing about them is, you can follow/rewind if you need to.
There is a wealth of information on this site - take a look. What can you lose?

Audrey