Question to your question.
Did he ever really lack extension or did it just look that way to most people? When I look back at Mo, Gatlin, Carl, etc the position of their legs at extension was in just about the same plane as Powell’s. Didn’t we discuss here how his extension was occuring in a more vertical fashion and thats why it appeared lacking?
For the most part everyone(sheep) will try to adopt the patterns of the fastest guy. It requires a little more work to actually figure out what they’re actually doing. I sure as hell didn’t think it was the reason for his success.