Hi, This is my first s-tronic so I have to ask you about: 1.) after 20 minutes (engine and gearbox become warm) s-tronic working a little louder, not loud but I can hear it, 2.) when the car is driving very slow and you try to accelerate there is gentle tapping (like in manual gearbox - dual mass wheel). Is it normal or rather I should go to service. Car is 3.0TDI 2013 - 1100 km distance. Many thanks.