So Mr Dean has had these symptoms every since he was implanted in Oct of 2012? This is one of the stories I feared as soon as my doc told me that he used a programmable on me. I have seen several stories of people who had nothing but trouble with them, the whole time they had them. Prior to this Medtronic, I have always had "fixed" medium pressure valves, and always had good luck with them. I am all for newer technology, it just that you hear so many bad things about them.......