WarKirby, if your animation started as a bvh, I've found one way to reduce the keyframes at the start is to apply the bvh to your figure, save that as an animated Pose, close, call up the figure again and apply the Pose. This seems to cut down a lot of the extraneous keyframes for things like "Taper" etc. that seems to get in there upon the original bvh import.