i'm definitely rotating. I'm not new to this business but new to prop. I have 10 sites i'm using so they aren't getting hit day after day.
Also if it was scar tissue it would be more pain injecting because the scar tissue would be pulled apart when the oil is pushed into the muscle. i have zero injection pain. It happens later like my body reacts against it or something. I'm not real sure. I've narrowed it to the prop because i took the tren out of one injection and the pain still remained.