Fitting a brand new head to my new engine build so far so good - however there is a part in the original cylinder head that is not fitted to the new one. Looks like some kind of oil feed pipe for the vacuum pump cam follower. It doesn't seem to want to come out of the old head, the pipe is quite soft and could break off quite easily so I'm a bit reluctant to get brutal with it before asking first.. The new head has a tiny hole where this would go. Somebody must have come across this before..