We don't see the tree until the camera pans past the concrete pillar on the south side of the stairs. That corresponds to where JFK was at about z175. After that, the oak tree begins to obscure the view of the street. How can that be under the tree at z133? :
It is obscured by the tree about z133 but not indicated by the Dorman film because Dorman had her camera pointed well above the limo and JFK. You really need to understand that the window was two floors below the sniper's nest window and several windows west of the sniper's nest window. What that means is that (from Dorman's position) the tree obscured JFK earlier than it obscured the line of sight from the sniper's nest window. It is easy to visualize this just by using a straightedge with Roberdeau's map. And verifiable with a 3-D model. I believe that it was James Hackeroot that has verified this with his 3-D model also. The view from the sniper's nest became obscured in the neighborhood of z160.
Charles, you are providing a perfect example of confirmation bias!! You are using a third-hand account of someone who claims to have interviewed Adams long after the events and, instead of trying to corroborate that statement with bodies of consistent, independent evidence, you are taking what she is purported to have said as absolute gospel and are trying to fit it to the conclusion that you have already made.
Not only that, you are not looking critically at the physical evidence. The tree is does not begin to block Adams' view of the street until after z160 and she said that the first shot was after that. That puts the President down around the lamppost next to which Woodward was standing:
There is zero evidence of a shot at z133. None. But more to the point, there are large independent bodies of witness evidence that conflict with it. You just dismiss that evidence by saying that you treat witness evidence as the least reliable form of evidence. But you ignore the fact that YOU are using the evidence of ONE WITNESS to support the z133 phantom missed shot!