Scott,
I was able to get the exact same results out of my 9000. I did have to locate a good walking base style before I could notice the problem you have referred to. Rather it is a product of design or not, I do not know. I imagine with all the possible chord variations the program engineers had to deal with, maybe they felt this was the solution. I'm with you though, when you have an active base line moving between different notes, it makes for a very noticable difference when the base line just keeps hitting the same note repeatidly.
Good observation Scott.
Dennis
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Regards,
Dennis L. Almond
aka...TwoNuts