Where are you pinning? I am fairly new to all of this and on my first cycle but the glutes are easier to pin than most injection sites because it is practically all muscle back there in the upper outer quadrant. I haven't decided on this cycle if I will try any other spots or just go back and forth between the left/right glute. If you are pinning your quads and delts, it would seem to me that the outer quadrants of both will pose the least amount of risk hitting a nerve of any sort.

If you don't already know, don't tense the muscle you are pinning, stay relaxed, and per my other thread, a hot shower before hand works wonders for me. On the glutes anyways. I can't speak for any other spots but simply provide some theories based on what I have heard.