Seems like you back knee is way to close to the back of your front knee. If your having trouble with toe side your front binding is set too far back. Move front binding forward. Front binding location is for steering. How about boot cuff angles? Mount boots on bindings without liners. Step in, where does you leg sit in relation to the cuff? Centered? Try walking on a hard surface with boots on ( with liners ). Does you foot land somewhat even or do you mostly land on one edge or the other? That will tell you if you cuff angles are right for you or not. I would start there.