I'll put money it is just the exposure on the camera that took the photo of that tech strip, all the whites look blown out in that image.

Hey, do you happen to have any screens of another training shot, one of the ones where the lightsaber always looks white on the video transfers? Mike Verta has confirmed that it was clearly blue in every shot on theatrical prints in '77, and the bootleg videos from the original release seem to confirm this. But I'd love to see another screen from this "inferior" print if you have one.

Sure just post me which frame you want and I will dig it out.

The individual frames from this print aren't that bad, but I am not using it as the damage is extreme in the print, and the contrast isn't as good as some of the others. These frames have had cleanup done, but not colour adjustment, and the cleanup wasn't complete (you can still see plenty of damage in those two images), it is just as far as I got before moving on to better prints.