Question Animation drift with Root Motion

So I have a series of animations for opening and closing boxes that currently require RootMotion to work. However I have a small issue with the animations causing drift over time. The more the boxes open and close, the worse it gets - which is an issue as the game involves opening and closing those boxes a lot. Negative speed is even worse. I've tried both manually reversing the animations and using this editor addon. However, I still have this issue and don't know how to fix it without removing RootMotion. Is there any other way to solve it without hard-coding some sort of reset?