Hey Chris, as usual a most thoughtful response. I didn't come to the conclusion lightly, and as you can tell I am not as hell-bent as some might assume. This had a lot to do with where I'm traveling, and a safe vs sorry outcome. I am far better today,. and in all ways glad I decided to do this. We don't know very much, and based on what I could find through my own research, this seemed like the right move. I have no idea. But as with all things, all we can do is the best we can with what we know. thanks as alway for the intelligent and thorough comment.