Perhaps it needs to be adjusted again. I had a SCS Boston Scientific about 1 1/2 years ago. I had pretty bad pain in my right foot from 2 prior surgeries. I only got about 25% relief and I didn't like the parathesia. No pain, but I found it annoying. So, a couple of months later I had it removed. No big deal. I heard afterward that Boston Scientific is good for the legs or feet. I works for torso problems. I'm considering Nevro or DRG. You can have your SCS removed, wait a few months and try another trial for a different one. I have been told that Nevro or DRG does not have parathesia. Good luck. You deserve better than 40% relief. The DRG does not need daily charging like Nevro or Boston Scientific (Medtronic).