Dan-
You seem like a sharp guy. So it is perplexing that you believe people like Truly, Shelly, and Fritz were somehow involved in a conspiracy to kill JFK. For which there is absolutely no credible evidence. Truly even inadvertently assisted Oswald in escaping from the TSBD by confirming to the police that he was an employee. If the conspirators were intent on Oswald being framed from the crime and then silenced before he could talk, it is somewhat inexplicable that members of the conspiracy assisted Oswald in escaping the TSBD and then allowed him to speak freely before the world press.
In the Oswald-Did-It scenario all the other TSBD employees are just men and women going about their daily routines when a lone madman causes havoc.
If these are just innocent people going about their day, why do so many of them lie in the various statements they give to the various investigating authorities:
Bill Shelley
Billy Lovelady
Bonnie Ray Williams
Hank Norman
Junior Jarman
Charles Givens
Jack Dougherty
All of them lie in their various statements - not misunderstandings or "misrememberances" - out and out lies.
Why?
Once I started understanding why they were lying it became clear, to me at least, Oswald wasn't acting alone.
Once that became clear, I was in the wacky world of conspiracy.