Sam Hurt has solved the headspace problem, and I am in receipt of the completed 99.
This rifle was gifted to me by my Uncle Angelo, who was also my Godfather. While we may all have several uncles, we only get one Godfather. I had both in one. This is a Big Deal for an Italian family at the time in which I was raised. That makes this rifle very important to me.
In any event, Sam has put the ‘Godfather Special’ (as my kids call the rifle) back in action. After trying the bolt exchange, he decided that it needed a replacement barrel. So, that is the direction that was taken.
Thanks to the recommendations from this site and the expert work that Sam provided, I am, once again, a happy Savage 99F owner. My only regret is that I failed to take a photo of me with Sam by his lovely home.