TG-
Maybe, maybe, maybe.
Yes, the GSR on LHO's cheeks is not meaningful. Way before the JFKA, the Buffalo Police Department fired lots of rifles many many times, and rarely got GSR on the shooter's cheeks.
I think LHO just ran down the stairs before Adams and Styles.
Nobody got a good look at the figure in the TSBD6 sniper's nest. Could be LHO, probably was. He is best suspect.
But...
Gov. JBC said he heard the first shot, turned around to his right, then began to turn forward, and then was shot in the back and "pushed forward."
That happens about Z-295.
If JBC is shot by the same slug that passed through JFK, he appears unaware of it, and makes a 180-degree turn in his seat to look for JFK...we (Z-film watchers) see the left profile of JBC's face after he was shot through the chest, having his wrist broken, and slug buried in this thigh.
My take is JBC was shot ~Z-295, and JFK at Z-313.
So, two shooters, both fro behind.
A smoke-and-bang show at the GK---a diversion? A shot? The one that fractured JBC's wrist?
I don't know.
Caveat emptor and draw your own conclusions.
And I firmly, without equivocation, in a virile way, say: "Maybe!"