man sorry for you folks having this problem ! question if I might , " did this back pain start around the same time line you received your spyder " ? and your back pain " is it local pain or discomfort right at or just below the rib cage , both sides ' ? like the lumbar area in your back ? the reason I mention this is , myself , I have noticed from just riding the spyder for over 2 or 3 hours my back is sore , from the " slump " position I seem too sit at , I have too remember too sit -up straight " force myself too do that " on the 2 wheeler , I have more of a laid back sitting position and the body is more relaxed in the back , but my legs on the 2 wheeler , stay tense , I am not sure why on the needing too stay tense on a nice ride on a great day , I guess mentally I am ready for deer or other animals too jump out in front of me ! { but back too the back issue ----- before operation ---- have your doctor try muscle relaxers , or have you tried this already ? the wife has been on super meds for lower back pain and the relaxers , have giving her a new life than the one with the super meds ... } just my thinking only , something that might help ! hope you get back too feeling better my friend !