That is hard on you to take that much Tylenol every day, the mmj would benefit you, but ask your doctor about Marinol
(not sure if im spelling it right), a synthetic pill form so that you dont have to smoke, if your doc is open minded. It isnt quite the same but, its worth a try. I think that It helps me put the pain in the back of my mind, sometimes it breaks through when it its intense. But the dull achey pains that are constant are eased enough to not think about as much.