Hey Herb...

In honesty I haven't checked out any of these newsletters and as a result I didn't fully understand what you were speaking about here. However, I did pick up on something I might be able to help you with.

When beginning training for my last fight my squats were mediocre at best, mostly because I tended to hunch up, allowing the weight to force me forward, placing the load on my quads.
this indicated weakness in my erectors and other lower back muscles.
This meant the obvious solution was to strengthen my lower back. Deadlifts are the obvious choice in strengthening the back, but they will load on muscle which will result in a change of weight class. So as an alternative try strengthening the back with hypers etc.
For me this allowed a huge jump in my squats which translated to easier slipping and rolling in the ring.