You mentioned below about working in an article about weak points. I have one example for you.
I really struggle to keep my shoulders down when doing decline bench, dips and chins. As I add weight/fatigue, my shoulders move up toward my ears. Its more than a coaching cue. I can push press more weight than I can decline press with good form. Are there specific exercises I can do to work the muscles in the back that keep the humerus down in the joint in a stable position?