The Yamaha AN1x Synthesizer mailing list

I believe what's happening is the AN200 patch is fine. Summa's 
controller is sending the vibrato data. The AN200 is responding. Summa 
wants the modwheel to send modulation data to some of synthesizers, 
and not to the AN200. So Summa needs one of those remapping tools that 
Bruce Wahler sells.

The caveat: I don't know MIDI very well at all.

Rainbow Jimmy