Iirc, didn't Craig have one leg slightly shorter?If you are not riding switch 50% of the time then there's not much benefit in a symmetrical duck stance, other than that you are familiar with it. I've had surgery on the medial meniscus on my back leg and going even to 0 or -3 degrees on the back foot makes a big improvement for me in terms of pain. That and bindings with a canted base. If you are thinking about new bindings anyway, I can recommend Rome Katanas as they have some space age dampening material which is nice for the knees but also they ship with flat and canted footbeds in the box that take two seconds to change with no tools. You could even ride with them in your pocket and change halfway down a run to feel the difference or have one foot canted one flat (pretty sure Craig Kelly rode with only his rear foot canted FWIW).