I got the head off to find out what went wrong.
Dont you hate it when it is something that should have got picked up in the assembly process.
What i discovered was that the holes where the head bolts go through were not quite big enough, so that when i did them up, the gasket binded on the bolts and did not allow every thing to clamp properly.
I have it almost back together now and we will see how she fires up on the weekend hopfully
** Fingers Crossed **
ps. with annealing i got an old large bbq plate, shoved it on the 4 burner flat out and also hit it with a lpg blowtorch, not ideal but the best i could come up with.