Hi Ken,
I did address this topic in my post here:
If Trump is looking to the screen his head is not completely turned in a perfect 90° angle towards the screen. I watched his eyes. His eyes are all the way to the right when he is talking, saving him the effort to look all the way back over his shoulder. So if you want to position Trumps head angle it is rather to the left corner of the screen and not the center. According to our simulation however, even with this position, Crooks could not have shot from his position without touching the cheek first and then the ear. The only perfect angle, when considering hypothesis 2, would be coming from the 2nd shooter in building 6. Below some screen shots:
