I read your post with interest because I have symptoms of burning, tingling and occasional stabbing knife type pain in my feet, progressively getting worse over the last three years. I am 70 and I am diabetic, but have maintained a A1C of 6.2 to 6.5 for over 15 years. Your comment of "PN flairs at A1C over 11" was eye opening. 10 years ago I had two emergency back surgeries on L5S1 to remediate foot drop, paralysis in my left leg. The surgery was very successful and I regained all strength in my feet. However this neuropathy is definitely a big concern and might be a result of the paralysis of years ago... NOT because of diabetes. Thank you for your post. I'm going to focus on back issues as a cause, not diabetes. Best wishes in your search for some relief. Don't give up. It is not fun to see your mobility and quality of life begin to impact the joy of daily living.