I will try fixing it here in my hometown of montreal Canada. I live pretty far away, if I try sending the controller to Viking it will cost me a lot. If I couldn't fix it here then I will ask him.
As I posted prior, I have the same upward vertical drift on R stick. I made a rune to fix it and works great in Destiny, Advanced Warfare and BO 3 Beta so far. You can tune it to whatever your specific stick drift. It will make a few quick small choppy upward movements when you move the stick up once in a while but actually is a non-issue when playing. In fact, it actually helps me get on target quicker since the vertical movement is fast and incremental most of the time.
I am trying to post the rune to the Public Forge but haven't found a way to do that. I have asked how to post to the Public Forge in another post I created today. Hoping to hear something soon. The rune I created works very well.