My left fingers feel lighter, more free to move. Better independence between the middle and ring fingers too, they're really stuck together on my right side...
Is it possible one hand has just taken more abuse and developed more muscle so the other hand is more flexible, and less musclebound?
I notice I'm more comfortable leading with the ring and pinky, while the middle finger just follows.
That sounds like the grip advocated in Moeller's book. As I get older, my fingers are starting to seize up so I try to use nothing but that grip. I'm hoping it will work well for me when my dexterity is kaput.