The SBT is wrong because it conflicts with large bodies of consistent and well corroborated evidence. But that does not mean that someone other than, or in addition to, Oswald fired shots.
The shot timing that follows from the evidence is 1...........2......3. The sequence of shots is: shot#1 hits JFK in upper back and exits his throat under his neck tie knot; shot#2 just misses JFK's head on the right side and strikesJBC in the right armpit exiting through his jacket pocket and strikes the back of his foream shattering the radius and fragmenting into several pieces that deflect away from the point of contact; shot#3 strikes JFK in the head. There is abundant consistent evidence that supports this and that conflcts with any other explanation. Moreover, the zfilm and the evidence enables us to pinpoint shot#2 and #3 and bracket shot#1 to within a couple of frames.
Andrew, while I disagree with your negative assessment of the viability of the SBT as well as your version of the shot sequencing and wounding, I think what you have proposed is at least a reasonable accounting of the mechanics of the assassination.
Of course, due to the proximity of the wounding of JFK and JBC your version of what happened would almost certainly require two assassins behind the limo (for which there is no evidence), but at least it's possible.
In any event, at least you have approached the assassination sequence logically.
Since you do NOT believe that there was a frontal throat entry wound, there is no need to lump you in with the drooling kooks that continue to insist JFK's throat wound was one of entry even though they can't answer the fundamental question of what happened to the bullet that entered his throat.
Challenge still on for the drooling kooks.
What happened to the bullet that you insist entered JFK's throat ?