So sorry to hear that your left side is hurting i have had bilateral TOS since the being of this and what i have fond is that my left side has always been a bit better then the right but now after a few months of losing my fine motor skills in my right it is now starting in my left hand and the other strange thing is it has taken 4 years for my left arm to get the same type of tremors that i have had in my right. Any ways i hope that comp wont give you to hard of a time for your left side and my heart goes out to you it is such a pain to be in pain on both sides.