In Poser 4 and Poser 5, all the female characters walk with a twitch in their right legs. I've tried every tweak I can think of, including touching up the Twist, Bend and Side-Side parameters in the Graph Editor, but them girls still got that twitchy thang goin' on!

Apart from a swat on their sassy li'l rear-ends, how can I eliminate that twitch?