I realize new tires are a joy, and a bunch of you are thinking ya ya new tires, but I seriously don't think I have been able to achieve this level of neutral handling with the PR3's or 4's.
I am one of those people
In my case, worn out PR4GT = had to fight HARD to hold it down for a corner. New PR4GT = almost neutral, no effort at all to hold a corner. When you start wearing out the center of the tire, any tire, it will get harder and harder to hold a corner. And it will "dance" some at the transition from the worn out places to the less worn places on the sides.
In your case, I suspect if you had the same [newly improved/corrected] suspension settings before with any new PR4 3 or 2, it would have been neutral....
But enjoy it while it lasts