I really appreciate the input guys. The well documented issues I am pretty up on. The possible issues I am looking for would likely only be known by by people who have produced a lot of clutches (which I have not) and possibly not published. The number that I thought could possibly exist would be for a lower number of clutches not for total infertility. As I had feared, what Deborah has said, is probably the case and the problem is most likely me or that these girls just don't want to yet. I thought it might worth asking though since my only contact with ball python people is through this board and the people I wholesale to.