You guys ever pull shafts before? Doesn't read like it.🤓
If you heated the head to pull the shaft, that epoxy in the .355 bore is also soft/powdered. Just clean it out with a pick or small screwdriver. Roll up some emery cloth and push it down in there and twist it around to scratch up the bore for adhesion. (clean with alcohol, lacquer thinner, or napalm 😨, of course)