I have a 2008 A6 with 12K miles. Everything about the car is excellent except one very annoying behavior. The brake pedal is extremely sensitive, making modulation very difficult; reminds me of Detroit iron. My wife thinks of it as an on/off switch. Her previous car was an E39 540i with terrific brakes wrt modulation and control. I drive a Porsche GT3 with outstanding brake control. I recently had a 2010 A4 loaner from the dealer that also had much better modulation/control. Has anybody had this experience and/or fixed it? Thanks.