Thanks for your story. As far as 607BCE goes, Watchtower concocted a theory and 607 is necessary for their theory to work. I know people could say their theory is wrong, but they pile on to their theory to say that "the Bible indicates" that so many things that are part of their theory are givens. They further belittle any evidence that Watchtower's theory is wrong with quick dismissals, yet they never look at their own theory with a thought of dismissing it. Their way of asserting things makes the average member walk away saying "The Bible must be true" instead of "Watchtower must be true."
JWfacts is awesome. I am glad Tony steered you to real research.