My volume challenges have been well beyond just the differences in patch volumes (which seems to be pretty common in many synths); it seems that there are WIDE volume changes as I go from one octive to another!!! I use a Yamaha WX5 wind controller (I'm a sax player), and have to use a volume pedal to compensate for the big changes within each patch! Maybe I'll contact Roland, cuz it sure shouldn't be so inconsistant..........