Well glad I took the time to check.. valve lashes were less than perfect.
According to the documentation I have from Cosworth my cams should be .008 +-.001 and. 010 +- .001 for intake / exhaust respectively. Can anyone confirm for the 278/274 cams?
I took good notes and will be tightening head studs tomorrow, hopefully I can mix and match with what is on my car and the 15 extra buckets I have to make it work. Otherwise Jamie at SGP is getting a call!