Hi Sparky
If you've not already left the forum, one reason for sequence voicing problems is to do with Track assign. Do the following:-
Program Menus>Sequencer>Record & Edit>Track Assign> then check the tracks you have recorded. You may find that that two tracks are showing 'Right 1' So each time you change the voicing in Right 1, you also change the other track. All you need to do is change the other 'Right 1' track to the Track number it should be.
John