The basics of the criminal situation inside the TSBD, involving the elevator behavior, is that the elevator system lost power entirely during the first minutes of the police search, and that the west freight elevator descended while first responder Marrion Baker was ascending the corner stairs. A careful re-read of The Book Depository as a Potemkin Village might help you appreciate that. I devoted the month of January on that essay and chose my words with the best precision I could. The evidence you are looking for is right in front of you, right there in the essay.
An earlier mega-essay from 2016, Inside Job, has sections in its first half called Dougherty on the Loose and Frazier and the Elevator Power that go into much greater detail about what they got away with; I really haven't changed my position on the specifics as regards their complicity. So that might be a good place to delve into for sharpening your critique.