Will

This is what I have so far. It looks like it would bind or wear out poorly against the side of leg. 

I may adjust the design to use something like https://www.thingiverse.com/thing:24661 On the alignment of the servos I can see it doesn't matter much on the belt thats pretty adjustable to...

Looking it over this morning I had the lower leg on backwards.

I mean the range of the servos. Where do you place the min and the max. The servos usually provide 180 degrees of motion. I don't know how much experimentation...