Yeah, in hindsight it's obvious enough..... didn't show any overt signs of vac leaks though, which was why I'd been letting it slide. I know a job that will let the blood out of my knuckles when I see one.....
The oil in the plug wells was very early stage. Just a dribble in the middle plug on each side. End ones still dry. Not like the bloody TT which had all 4 about half full and the original (75k miles) plugs. That definitely ran better afterwards!
Nick