Franknberrie,

Perhaps bad leads is what happened with my son.  He turned the SCS up to maximum at home and could not feel anything.  It was still on 8.5 when we next went to the doctor.  The Medtronic rep tested it and said it was fine.  He then tried programming it and turned it up slowly from its lowest setting.  At 4.5, my son could not feel anything.  He turned it up to 4.6 and my son hit the roof yelling for him to turn it off as it was soooo strong.  The Medtronic rep said he could not program something that was so erratic and left to tell the doctor.  With all this, we were constantly told there was nothing wrong with the SCS and that (after an X-ray to confirm) the leads were placed "perfectly".  So - no error on part of doctor; no error on part of Medtronic!!  You explain why my son couldn;t feel any simulation at 8.5 and 4.5 but could at 4.6 !!!!  The doctor and Medtronic rep never have.  As I said before, we were VERY unimpressed by the Medtronic representatives.  The first two did not care at all and the third one tried harder but only after we had complained to the supervisor.