I WONDER HOW MANY PEOPLE OUT THERE SUFFER ON GOING PROBLEMS WITH FAULTY SHUNTS I HAD A MEDTRONIC STRATA VALVE ADJUSTMENT BY MAGNET THAT KEPT LOSING ITS SETTING AFTER 13 TIMES. HAVE HAD IT REMOVED NOW NO PROBLEMS WITH HEADACHES NAUSEA ETC SINCE REMOVAL 3 MONTHS AGO, CAN ANYONE SUGGEST HOW I CAN START UP A GROUP TO GET AN IDEA OF HOW MUCH OF A PROBLEM THIS IS. WOULD LOVE TOO HEAR FROM OTHERS OUT THERE. THE MAKERS SAY IT CAN'T HAPPEN I HAVE KEPT CLEAR OF ANY MAGNETIC SOURCES. I HAVE HAD NO HELP FROM MY N.S OR MEDTRONIC REGARDING THIS PROBLEM. CAN ANYONE HELP