I'll re-read your post when I'm less tired as it seems to be packed with fascinating info!!. But do I take it you're after the 30 minute Trade Test cue sheets? If so I found these on my travels five years or so ago. Any use? ==> pixeldrain.com/u/6dXUahqA
That is exactly what I was looking for! There's a few of them that I already had, from a web archive copy of mb21's tx library, but there are several here that I have not been able to find before. With this, I pretty much have all the cue sheets available to me! Of course, de-obfuscating tracks is a different beast, but that's another story for another day. Thanks again!