John,
It might help if the members offering suggestions knew who your expert was. I realize that you are being appropriately diplomatic in not mentioning the name, but others here may have expereince with, or even be friends with him. No one would deny that you have have been most repectful of his name and expertise. Nevertheless, there are folks here with a lot of experience who might have other opinions of him. Otherwise, knowing the person, they might be able to pose the right questions for you to ask or, even, intercede on your behalf. (I would not be among those who know the man, being that I'm in Chicago.)
Richard L.