That is the biggest load of crap. Zapruder testified that he stopped and restarted shooting after the limo turned. Witnesses are not reliable, 50 people witness something and all we see things slightly different. The Parkland doctors testimony to the Warren Commission said the wound was in the parietal spreading into the occipital. All said they had reviewed the autopsy report and agreed that it matched what they saw. They also confirmed that only two of them saw the throat wound before the tracheotomy was performed and those that did when made aware of the back wound...that they never saw because they never turned him over...was likely an exit wound. Further the close examination was pure BS, they were trying to save him, none of the doctors testified to examining the wound and if the wound was as being described as fully in the occipital area, how the hell could they see it? They never lifted his head and they never turned him over.
The sewer thing is ridiculous, did you see the cars passing when the guy was in there? There was no way for someone with a rifle to even shoot from there. There was no room to aim, and the angle would not allow for a shot if they could. Here is the bullet path and an outline of the wound that is exactly what the Parkland doctors described before the Warren Commission and what is shown in the autopsy photos.