Have you watched the You Tube presentation by Max Holland? 11+ seconds is what he has been pushing and he is the guy that originated this "early shot" scenario. Same goes for Holland being the originator of Oswald standing erect when firing that early 1st shot Down through a 1/2 open window.
Dear World-Famous Comrade Storing,
Why are you obsessed with Holland's probably incorrect theory when, in fact, Oswald's first, missing-everything shot was more likely at "Z-124," i.e., a second later than Holland's "Z-107"?
-- Tom