Is there a magic trick to putting them on? I'd love these tights if I could only get them to sit right. I'm bang in the middle of the size and height for the size I'm wearing, and they font feel too big. I tried a size down, but they are too tight. But they are constantly in folds round my ankles and the back of my knees. It feels as if they are twisting somehow. Meanwhile, I look like Nora Batty.