I would offer to bet but I think it's going to be a long time before we will see a table together.
Can you explain why it doesn't work?
With the CB under the 1 as in your diagram, you are cutting the 1 a lot more, so the CB has too much speed, and not enough spin. The spin runs out by the time it gets to the second rail. I tried it a bunch of times today (but cut that out from the video).
In my first video, I was about parallel to the 1 ball. That was my first instinct. That almost got there, but never did. Today I tried your CB placement, closer to the end rail than the 1. That was worse for the spin to sped ratio.
When I went the other direction with the CB, so I was cutting the 1 the least, that was the clear winner. By far way more spin, and a slow enough speed to stop before the 2 ball.