Anim Notify States To Your Montages
This will determine the Action Phases of your actions which plays this montage.
Basicly add MAS_Main_Action Anim State to your animation montages.
Let's see how does it work with my increadable drawing skills.
note
There is an Animation Modifier which adds this MAS_Main_Action anim state to the selected time frames. With these your montages could have a determined time to change their phases.
And by editing this MAS_AnimNotifyStatePlacer or it's children all the animations edited by this animaiton modifier change. So it is nondestructive workflow for your montages.