Somehow I'm not surprised.
Except for one thing:
I had no idea the camera was so far up. I always wondered why you occasionally had trouble with field/zoom control on the spine and profile (particularly because it seems to frustrate you, so I know you're on top of it), and now it makes sense. I always wanted to try to offer a suggestion on this front, but without knowing the setup, it was impossible. Now that I see how far your camera is from the table, it makes a lot more sense: I imagine it is very difficult to predictably set the focus field given the distance and lens that you are using.
For some reason, I thought that you might be using a Canon D5 or something similar—I know these are considered "legit" in the industry now for light-weight HD jobs. I imagine one of those is pretty easy to control the focus field, etc, especially depending on the lens (my little S95 has surprisingly accurate field-adjustment for tight or wide focus range separate from aperture/focal length, and I imagine the D5 is even better). I don't know hardly anything about "real" cameras, though, so I don't know if tightening the field focus range would really help at all in this situation (the reasoning is that tightening the focus field as much as possible might give you a faster or more predictable or accurate re-focus when you use your hand or finger to shift from the table to the elevated blade/choil shots, but without sacrificing a sharp focus on the table if your hands are clearly out of the way).
Anyways, I mention this only to share some thoughts. In the link you provide directly above, there are obviously no frustrations on your end of this sort...so maybe your set up has changed or something else, anyway! I think you know how much I enjoy your videos and how polished and wonderful I think they are (I'm especially pleased that your audio and print-outs are so clear and consistent), so take this a me trying to make a little conversation rather than pretending to offer a suggestion that you haven't already thought of! Keep it up.