That's just a recent thread where the guy wanted the latest dv and pcv revisions, which are rev G and rev R respectively.
It sounds like a f*cked dv from your description. Although it's a good idea to get the pcv done while you're at it.
Niki will check, but it's better to get to R-Tech knowing you've got all the basics renewed anyway. Check your cam follower too (again, loads of threads on that).