IB-B, thank you for reminding us of the salad days of this thread when we had so many contributing to the OP theme. That we have rarely proceeded in a linear fashion, but flit and wander as we please, is to my mind testament to the very nature of this virtual crew room. Researchers will have rich veins to mine within these pages, but they will have to mine deep and search its entirety for their needs. In return they will be rewarded with abundance.
Now that we have returned to Carlstrom here are two YouTube videos of it. A sort of before and after:-
https://www.youtube.com/watch?v=QyDo795tE3U
https://www.youtube.com/watch?v=Yq3rBmJJKtA&t=71s