> … Unfortunately we now have a new problem to solve. Every note is out of tune -
> one quart to one half step sharp. The sound of the oscillators appears to be wavering.
> We attempted the Tune All function, which completed but did not change or fix the tuning...
> Using the Pitch Bend lever, we could force it into tune while holding the lever in place...

Further to Paul's recent note (and just to clarify) - is it confirmed that the behaviour occurs on all voice patches and is also seen when using a 'scratch patch'? [e.g., just to rule out the simple case where the currently selected patch is actually programmed to modulate the frequency/shift the tuning)]

David Clarke