Yesterday my 350 had a few minutes attention from a guy with a laptop - see MrF's thread: Nippon Challenge Dates 2010. It is better to drive (no more power) and I intend to follow this up with a full rolling road session. Another problem this winter has been the rear hatch closing on my bald head! The gas struts lose strength with the cold. However the lads at Silverstone yesterday told me that there is a heavy weight fitted by Nissan behind the trim. I shall be having a look in a minute!