Chris
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        I will have had this for three years in May.  My doctor has not been much help.  I can't believe you have had it for 8. My doc said 2- 4 years it can last.  It has been difficult.  Interested in what you have to say.  It has really gotten me down at times.