By Asymmetric, I mean one side (left or right aperture corners) being more dominant. Thus one side working harder than the other. Given the responses I’m getting above, I’m beginning to think I’m just odd. Its not a major issue, and I am making good progress; I just wondered if anyone else had the same feeling.

My teeth are not perfectly aligned but I don’t think (can’t be sure of course) that this is something related to the shape of teeth or jaw. I think I’m getting better balance now with some focus on each side independently. Assuming the problem isn’t just in my mind then I think its quite an old issue. Its only now – that I’m aware of the function of the aperture corners – that this has become at all of interest/concern.

Thanks for all the comments. A great forum.