I bought a 2005.5 TDI with 101k miles it. It had a new clutch put in at around 90k. Something I've noticed is that when I lightly press on the clutch (don't get the idea that I drive around all day with my foot resting on it) there is a pulsing motion. Also, taking off isn't as smooth as I think it is supposed to be. Do I have problems? Where should I start?