Originally Posted by: stephen limbaugh

Pat, what notes are out of tune on the Yamaha?  Also, are you familiar with the per-note tuning on the Edit page?

Following this up, the notes on the CFX that seem out of tune to my ears are:

B5, Eflat6, E6 (This is an example of a note that choruses meaning one or more of the 3 strings is out of tune making the note itself out of tune with itself which gives it that chorsuing effect when played), F6, G6, A flat6, B6, D7.

As Stephen suggested, I tuned them individually one note at a time. (Nice feature!)  Thanks for alerting me of that ability.  And this did improve the above mentioned notes in all cases except perhap E6 which seems to chorus no matter how I tune it.

By tuning up the notes above I am able to improve the tuning in that upper octave and feel this to be a big improvement.  (though this would be excessive, imagine sampling each string and then giving the user control over tuning each string not too unlike how a piano tuner tunes a piano muting the 2 strings while they tune the 3rd, and so on).  This would require 3x the sample memory and woudn't be realistic.  But it is an interesting idea at least. This might be applied to only octave 6 and above which seems to be a challenging are of a piano to keep in tune.