Yeah no problem. I spent an entire night trying to figure out how to extract the files myself until I realized that I need a few files to be able to read the contents because I hadn't updated it.
I'm also using the same blender script.
Not sure if Blender can read .bntx file format but it does...
Yeah I had that same issue not too long ago until I realized that I needed to download a couple other files to put in the trinity folder that helps it read and open the files correctly.
Try dropping these into your trinity folder and see if it helps.
If it loads correctly then go ahead and...
Used Toolbox to edit the .bntx file img that's used for the research lab window. I tested it out on my switch and it works no issues as far as I can tell.
I also couldn't really pin down the issue with the texture for the elevator. I did find the directory or texture it used but it didn't...