Danny,
Glad to be of some help. Thank you for making me think about backwards
knees! I've played with walking before but not with concave legs.
27000 face legs! – that's a bunch of faces. Must be some fantastic
geometry. I usually give up by then and try to replace geometry with
texture and bump maps.
A bunch of people would love to look at your results. A stripped down 3DS
keyframer file is the most educational, but a low-res FLI would be great.
Could you render a small segment with a linked camera & target that could
be looped to repeat? That should show off the motion.
JKJ