First time building a barra and I've found a hole in the front of the head. What raised concern was the obvious signs of tool marks (most likely from a dremel). This suggests it was made after casting.
My questions are: is this how they come from the factory?; is this a mod done to BF and later models? (I was advised the engine came from a BF)
Photos of hole attached along with the only photo I could find on the web with a similar hole.