That to me was the clincher. Why, 47 years ago, was it so imperative to make sure he was a NATURAL BORN American? That only became salient with his nomination to be president. For all other purposes, even election to the Senate, it would have been no big deal, had he been born abroad, to become an American via naturalization.
It may have been understood as imperative at the time by either the Mom or Grandparents so as to making him a CITIZEN.
Why, 47 years later, is it so imperative to make sure no one sees the long form? Just release the thing.
Would that be enough in your mind to qualify him???