Hi Steve,
this is "only" a Split Point "problem":
Press [Direct Access] + [Sync Start] to call up the Split Point display.
Make sure that the RIGHT3 Split Point is one semitone higher than the LEFT Splitpoint. The default settings are:
STYLE Split Point: F#2 (= the highest note of the Chord section)
LEFT Split Point: F#2 (= the highest note of the LEFT section)
RIGHT3 Split Point: G2 (= the lowest note of the RIGHT3 section)
If the LEFT Split Point is set to a higher note than the STYLE Split Point, the LEFT voice can be played on the keys between the STYLE and the RIGHT3 Split Point.
If the RIGHT3 Split Point is set to a higher note than "LEFT Split Point plus one semitone", the RIGHT1 and RIGHT2 voices can be played only on the keys between the LEFT and RIGHT3 Split Point, when the RIGHT3 Part is ON. (See also the attached picture!)
I guess that in your case the RIGHT3 Split Point is NOT set only ONE semitone higher than the STYLE/LEFT Split Points but it's set two or a few semitones higher. Then, when you turn on the RIGHT3 Part, the RIGHT1+2 voices can be played only on one or relatively few keys.
P.S.
If you use always the same Split Point settings, you can use "Parameter Lock" (Function > Utility > Config1 > 3 Parameter Lock) to avoid unwanted changes of the Split Points by Registrations or MIDI files.
Hope this helps!
Best regards,
Chris
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