Gandalf - I had the tracking and balancing problems (I've posted here wth pics I think on the Technical bit). One rear wheel had no weights at all and all the others were out a bit. The tracking was "quite a bit out but [they've] seen worse", according to the people I had do it.
I didnt really have any major problems that should have been picked up in the PDI though.
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24/03/05 to 27/06/12 & I loved it