Thank you for the routing information. I'd wondered about it, but never heard that the turn itself was thought to be a contributing factor.
The National Archives did a search of the CAB documents. They said all they had was the final report.
I've been working on a graphic/animation tool to help illustrate and visualize. I installed an Electra and am exploring how to use it. Right now it's bare metal, still working on getting the NWA paint on it. I intend to replace some of my pretty primitive drawings with better ones.
My initial project was to pose it in proper scale on the picture of the RR tracks. Boy, now that I see it in scale it's real hard to imagine anything more substantial than the wingtip hitting. The software has not yet output an image. When I get that working I'll post it.