I spoke with the girlfriend today, who graduates from her nursing program next month, and she is telling me that anywhere aside from delts, ass, and quads, you shouldn't inject anywhere else. She said that there is too many veins, arteries, and nerves, as well as the needle would be too close to the bone and you could get a bone infection. Has anybody experienced any problems with the alternate sites? What if I got a 5/8ths pin length or something?