I dont tuch any of the curves. and just set theas settings.
yaw 1.2
pitch 1.2
roll .4
X 1.0
Y 1.0
Z .4
for smothing 123,128,136,144,144,158 top to bottom
theas give me a very good result. When I mesed with the curves I wound up gitting a dizzy as it did not feal natural the way the head would speed up and slow down. This profile will keep movment to where you move.