Thanks for the explanation. I understand the process you describe. You make it sound easy, which it may be for a pro, but I think I'd let someone who has experience do it. It's like a conversation I had with a client of mine, a veterinarian for whom I do computer work. He asked if some work that I was doing was something that he could do himself. I hesitated, knowing that he was a smart guy, but also knowing that he could get into a lot of trouble if he didn't really know what he was doing. He picked up on it immediately, and said that he understood. With a smile, his comment to me was that he could teach me to spay a dog, too, but that it probably wouldn't be a good idea for me to try it.