Regarding the barn layout - the attached is my attempt to draw that part of it in Visio. I know I didn’t get in the correct number of stalls or lockers on those aisles, and am also sure that I have the dimensions wrong, and maybe the actual location of RC’s stall and LK"s locker, but this is my sense of the layout based on the photos and various testimony.
Also - RC testified that she didn’t know where LK’s locker was. I thought I remembered something from either LK’s or RG’s testimony that it was located as depicted in my drawing. If that is the case and it was that close to RC’s stall, I am surprised that RC didn’t know where it was - although I guess it is possible that she was never there when they were using the locker.
And if LK’s locker was where I depicted it, I cannot imagine how a recording device in her locker could have picked up a conversation from someone sitting on that bench, unless the barn was dead quiet otherwise and the person was speaking very loudly.