The owner in your link posted in 01/2007 which means he had an early build 2007 CX-7. His valve concern was correct as Mazda did decide lubrication instead of replacement per the TSB. Most of the negative comments seem to be similar early 07's which include the CEL, leaks, etc. Hopefully, these are no longer problematic issues with the later 07's and 08's. I haven't seen many posts myself with the newer CX's, but perhaps the later cars just don't have the mileage or age to show their problems either? Time will tell.....