Hey Andre thanks, my left arm wasn't the stronger when i broke it but they both were colse in strenght so that with this drop i noticed it right away. the only time it starts i get the shocks thyp things is when im working on jabs for to long. i only went to a phyisotherapist one time for it the guy stood there and asked me to show him all the movements i can do( ripped rotater cuff also) and i did every thing he asked me to do and i lifted how he told me to and everything and i don't know its still a difference i notice. like ill be dumbell benching 35lbs and the right can but it up easly 20 times and the left locks up and dosn't move and dose that shocking thing after 15or 16. but ill deffentally do that massaging and all that to see if that helps. thanks again