Bill, I believe the T5 has a sound engine that is very similar to the S-970, therefore the settings you used on the S-970 should work just fine on the T5 either in mono or stereo.

I think there were some drastic changes made in the Grand Piano voice of the T5, which may account for some of the problems you are encountering. Try using one of the piano voices I created several years ago, which are mono voices, and see if this makes a difference. You can download them from https://app.box.com/s/620aqowt5q1vlnvcl7n9

Hope this helps,

Gary