The Porshe website includes the following about PASM:

"If "Normal" mode is selected, and the car is driven assertively, PASM automatically switches to a harder rating within the "Normal" setup band. As the dampers become stiffer, the car becomes more stable and responds more quickly to driver inputs."

After 7,000 miles it seems that my 997S in Normal mode is much stiffer than even a 1,000 miles ago. I am a very aggresive driver so I wonder if all of the cumulative "assertive" miles I've put on the car have made my suspension generally stiffer. In fact, it seems that the difference between Sport and Normal mode has diminsihed significantly. Any thoughts or similar experiences out there?