Custom SOS Animation Bug

[noodleman]

Hoping someone has some experience with this, I am frankly stumped. 

 

I am making a quick custom SOS addon from some other assets which has 3 components; a static non animated component, a base/sheath component and a shaft component.  This is not an overly complex addon, and as I wanted to get it done somewhat quickly I simply created the new project in Outfit studio to overwrite an existing working addon.   For whatever reason, only the base/sheath animates correctly with SOS, while the shaft does not.  I have not experienced this issue with previous custom addons that I have created (several of which have the same 2 animated sections that both animate just fine, and several of which are just overwrites via Outfit studio) and am kind of at a loss as to what would be the cause.  Everything about the mesh seems to be fine, it is just an issue with getting SOS hvk file to apply to both the base and the shaft.  Any guidance would be appreciated, thank you.