Hi Jerry and Tyler:
I took Doug's suggestion and looked at the comments at the end of the YT video regarding backlash adjustment
I spent around 2 hours trying to find the sweet spot and I cannot. Either backlash is too much or when I just adjust to remove it, I get a grinding noise during around 1/3rd of the revolution of the pulley.
As I note in my video, this is one fussy adjustment and I have worked a lot on my AVX and CGEM extensively with no issues.
Any help is appreciated...btw, that 5/64" screw is incredibly difficult to get at and just gave up on that.
My YT video can be found here https://youtu.be/mIOX6eEY9bY