I recently took my 1200GT out and ran it pretty hard, and noticed that around 70-90 MPH under hard accleration I had some major clutch vibration and slippage. Has any body else experienced this? I am going to call the dealer and take it in, since its 2500 mile old with one service on it. I dont think this should be happening. I also by passed the ASC system to allow this kind of power delivery.