I'd rather not post the model but i can email it to you if you would like.

From my previous tests it was both legs im just currently using the left leg only for the test. As i have gone through my model's animations i have found that almost all have some type of "shrinkage" but certain movements exaggerate it immensely. (IE. walking up stairs.)

as for the values of skill20 the most notable is from 0 to roughly 29. by using the key step method i left everything at a +=1 as to forgo the fraction. I took that screeny using this method. the "shrinkage" is a gradual thing, as the model interpolates to a different position it shrinks and as it gets close to the next frame it grows back to its original size.

If i was using vertex animation i would think that perhaps my animation movements were spaced to far apart, however as i had stated in my original post if i put more frames in it (following the manuals recommendation of no more than 15 degree difference between frames) reduces the "shrinkage" but actually creates a very noticable rough and jerky interpolation path.

Thanks,
AJ