No need to take my word for it just as there is no need to take your word for anything. To satisfy yourself for positive proof, make an appointment with BEHL, you will find them very accomodating and they would be right there to answer all of your other concerns.
This all seems to wheigh heavy on your mind and BEHL can answer all of the specifics and you will have the answers straight from the source. Take the time to reseach where the answers are and not rely on second hand reports as that would only leave you with more questions and I have other things to do. I did my DD, I'm happy.