Personally I think there is a lot of YT garbage out there, but also some good stuff by people with substantial experience & non-conflicting ego or commercial bias. The trick is distinguishing between them & posers. No different than a book or magazine or technical journal or.... If I said I don't read books because they bore me, its hard to imagine I would have a complete picture of any subject, or at least without some selective information bias. Again, to each to their own & now we are off topic.
Yes, but it is a good topic. And I confess I screwed up. My apologies. Anyone who goes to the trouble of giving me a time mark to fast forward to deserves an effort on my part to try it. I didn't do that so shame on me. That plus I do respect your recommendations, and I didn't bother to check them out. Shame on me AGAIN.
Instead, I assumed I understood your point and ignored the video. I have now watched it as per your recommendation.
All the above said, it turns out that I actually did understand where all this was going. It also turns out that the location Robin chose isn't actually either screw hole. Instead he mounted a ring in the stress relief groove (or clearance groove) at the highest step in the Jaws. As luck would have it, that is even a bit lower leverage arm than what I chose. So I think my results would be the same as his.
That said, it's an interesting thing to check. I like to say "absolutely everything moves. It isn't if it will move, it's only how much will it move". Robin says "Everything is rubber." His is a much simpler way to view it.
When I get the time, I'll measure everything the way that he did.
Again Peter, my apologies. A good debate and differences of opinion are desirable aspects of any technical discussion. But ignoring your specific video recommendations after you went to the trouble of giving me a time reference and jumping over your point, whether or not I understood it, was a very poor showing on my part. You deserved much better than that from me, and I apologize for that.
Last but not least, for some reason, it seems I don't even have Renzetti pegged right. He isn't who I thought he was. No idea how I messed that up. I noticed a lot of good content while I watched that video. So I'm going to make a point of watching a few more of his videos because I'm virtually certain that I'll learn more than a few things worth knowing.