mathematically adjusting the amount of ease in/out

hey all,
i'm a regular afx user but have to comp something in c3 for various reasons i won't go in to now.
in afx i can alter the amount of ease on a keyframe by going to "animation > keyframe velocity" and setting the incoming/outgoing velocity of a keyframe, and how this this ramps up.
i can't find anything similar for combustion.
is my only recourse to manually edit the bezier points for each keyframe? i need to get them all the same, and trying to do this in c3's crappy graph timeline will take me forever.

is there any easy way to change the amount of ease on a group of keyframes?