Thanks, Dave & Peaches. Husband and I practice together, so he is providing the lead. In fact, teacher does not want me to get in the habit of trying to practice this by myself. Swinging the leg - I think you are on to something. I find I am tensing my leg muscles (sometimes the hip, sometimes the knee, sometimes the ankle) in my attempt to do the right thing, rather than staying loose. Don't know why this is so frustratingly difficult for me.