Well..............

What lines to cross do we have in aerodynamics?

We have stall. And that's sort of a line or sudden change that's described quite clearly with the plots. And the plots don't show any sudden changes for much of anything else.

I guess I got lost reading this, "One is that the pitching moment has more airspeed to work with so the pitching torque increases." because pitching moment is torque, isn't it. And it doesn't have more or less to work with from the air, it simply is whatever it is depending on the airspeed.

You know, the written word is a lousy means of communication. [:@]

But you know, the plots do show drag buckets. I'm going to declare that there is also a "pitch bucket" that noone has identified yet, and that causes these strange sudden pitch sightings. That's it..... pitch bucket!