Hit a snag (head removal)
Well we've hit a snag while trying to remove the head to replace my head gasket (EA falcon btw). One of the head bolts (14mm) has unfortunately become threaded at the top and any tool that we try to use is either making it worse or cannot fit around the bolt being in the awkward spot that it is. We've also tried to remove the rocker assembly first to free up some space around the bolt but unfortunately 1 out of the 24 bolts keeping this on has also become threaded, and the bolt is too small for any relevant tool to be useful.
What are my options? Were now considering getting the bolt machined out and rebored. Is there anything else we can do?