Sorry to hear you are in so much pain, I can relate. I take the same amount of oxy as you do and the only reason I don't take more is because I have 3 really busy kids at home and I can't function on more, it makes me too drowsy. My doctor is working with me to try and figure this out. Anyway, with regards to the pins and needles, have you ever been checked for Diabetic Neuropathy. There are nerve studies that your PCP can send you for.
I'm diabetic as well and suffer from this type of pain so you may want to look into this.
When you get to the end of your rope, tie a knot and hang on!!!!
Current Diagnosis-Rheumatoid Arthritis, Insulin Dependent Diabetes, Osteoarthritis right knee, Osteoporosis. Stress!!!!!!
Current Meds-Methotrexate 20mg s/c weekly, Plaquenil 200 mg BID, Celebrex, Folic Acid daily, Cesamet, Oxycontin 20 mg BID, Lorazepam 2 mg dly Actonel weekly, Insulin-Humalog 35 units TID and Lantus 40 units BID, Calcium, Vitamin D