> ... my polaris still wont play softly on channel one -
> turn off touch sensitivity and its fine...

To help let us know where we're at on this topic, can you confirm that
the per-channel offset calibration noted by Paul DeRocco was completed?

Also is the same behaviour seen regardless of the 'destination' of the
touch sensitivity. e.g., is a disparity seen in the reponse if the
destination is the 'Volume Envelope' or the 'Envelope?'