Posted on BDO.
https://www.bdoutdoors.com/forums/threads/the-penn-international-50-visx.679371/#post-4532115
you dont have to go that far, it's posted on AT.com too ;D ;D
http://alantani.com/index.php?topic=24636.msg276192#msg276192
Here is Tony Dubeck with a follow up/continuation done at the Fred Hall show.
https://www.youtube.com/watch?v=gSz0Z0a43dI