Hey Scott,
Two things to keep in mind here.
#1. Be SURE the stud will be PROPERLY aligned perpendicular the head! THIS MUST BE DONE PRIOR TO APPLYING epoxy to the threads and installing into the head.
#2. This IS NOT a "Proper fix". It is only a permanent, "on the bike" fix. Should last forever.
BUT, removing the head and having it repaired at a machine shop would be best.
