Had an AHA moment last night. My left leg, for the first time in the history of riding Ben, was able to be still. A combination of a better fitting saddle, and breaking a habit...my trainer said "try to keep your left leg from moving so much"...and so I tried to stretch it down. And for some reason, this time, it worked. It felt like a stable, still object.
I was able to repeat the same feeling several times.