Hi All, just had the timing belt replaced on my 75k 2006 A3 2.0TDi. Got it back and immediately I noticed a bit of a delay on turning the key and then a thump on start up. When I turn the ignition off the engine does seem to turn over a moment longer than it should (less than a second but noticeable). The car runs just fine, no slipping of clutch or other engine issues. I was thinking maybe the new belt was out by a tooth (if that's still possible) but reading these posts could it be the flywheel? If so, why didn't I get this before the timing belt was done? and how much is it going to cost...? Many Thanks.