Thanks for all that, I'm going to have a play with the breathers today, I have the re toqued the head to 80 lbs, so I'll feed back, if it ever stops raining and I can get it out.
An old mate who I did my apprenticeship with said he had a GT6 and he put a dowel in the oil feed hole on the block, and then fitted the external pipe to feed the cam. He has not got the car anymore so don't know what long term of that fix was, but it sounds like a possibility, before I go that far has anyone got an opinion.
Thanks