The skipping a beat is most likey
valve related. My Laguna has been doing it for the last 10k miles, and when I get round to it, I'll remove the
and clean it. Most of the time I don't really notice and it doesn't do it on full throttle, when it really matters.
I too have read the horror stories, but lets put this in perspective... you may have read 10, 20 even 30 storied on here of turbos blowing up etc, however, how many of these cars are on the road... and as someone has pointed out, no one ever sings the cars praises.... Well I am ... I love the car, I used to worry about all the odd noises etc, but having done 10k miles ion the last 3 months and only spent money on tyres I'm totally happy!!! Don't worry, just change the
every 9000 miles and you won't have any problems.