The codine is a pretty good opiate anyway, I have a choice selection of the 6 main opiates in my lab right now. I could make a fortune selling the contents of my labs fridge to Glasgow's junkies, damn these morals and today is my last day too!
Sounds lovely HTH, knees are one part of the body that make me all squeemish. Will this clear up or are you stuck with it for a while?