Vehicle Skeletal Animation Interpolation/Blending (Improvements/Problems)

I have setup an animation system for my vehicle’s wings (or spoilers) which are attached as a skeletal mesh,
however I am not getting a smooth interpolation between them.

The wings are setup to animate as a single mesh, not individually.
There are two primary animations (Forward & Break) as well as
two secondary animations (Forward-Reset & Break-Reset).

They are designed to work seamlessly together but I am not getting that result.
Its built only in blueprint with imported animations from Autodesk Maya 2018.

I have already accounted for the time taken for each animation to start and finish before the next animation can begin,
I did this using time delay’s before the animations can be called and interrupt each other.

Here is the setup I have:

And here is the video showing my problem, pay attention to the wings (or spoliers) on the back of the vehicle
to see what I mean about a problem with the interpolation of animations.