Damn and buggeritt!
Today is not a good day. Fiddling about with the engine when I noticed coolant seeping from the head gasket along by cylinder 1&2 and 5&6. Head bolts were re-torqued after running up the engine for the first time over the Easter break. Not started it since.
So going to have to strip off the head and check the flatness of the head. I should have done it after getting it back from the machine shop. A learning point there I think.
Huw