when you say you hit a nerve do you mean your muscle twitches? I get that all the time. I have found some sweet spots that it doesn't happen.

I don't pull out everytime I twitch... I just slowly keeep going in unless of course it is hurting... I then make sure to aspirate and inject. I least enjoy quad injections, but I have to rotate. Are you running a short ester calling for frequent injections or a longer one? If a longer one then, just hit delts and glutes. On the longer esters I only hit glutes. each cheek once a week for a total of two injections a week.