it seems that after all my effort to save the head threads has come to an end. to sum up I tapped the holes the studs came loose. Then I heli coiled them and the studs came loose. taking the manifold off messed up some of the heli coils. I removed them and now have trouble trying to replace the heli coils. the only thing left is to possibly try and install 10mm studs or get a new head.   not sure what to do.  

Have a good one man!

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