so I tried to inject my delt just now. last hit it on tuesday. I put the pin to the spot and push. I feel it break the skin and then that's it. I can't push anymore. not just hard to push, it just won't go. my delt depressed about half an inch from the pressure but no dice on going through the muscle. now I know its not infected. its not hard to the touch (no more than anybody else on juice), its not warm, its not red. feels totally fine just can't go through it. the inject on tue by the way was easy as pie. does scar tissue just pop up like that? the shot on tue was also big. 2.4 cc's. done it plenty if times