Entity Model for Mod not Working/Staying together.

[DEMMERS]

Made a model that would attache to the Biped Model's back (chestpiece area). As a JSON and setting the previews when put on the head it looks fine. HOWEVER that is NOT what I want. I exported it as an Entity Model, and coded it in. Everything is good, except that all the other model pieces are not attached to the main piece that is where its suppose to be.
Is there a way to set it up so that they are attached to each other?



The image above is the model loaded as an entity extending ModelBiped
The image below is what it is designed to be as per Cubik


How it is designed to be is correct, the placement of the model is correct, and the base matches to the player's body. However it has no structure so it cannot be.

[Sphax]

Are you using Java exporter?

If yes, this exporter is still in development and should be fixed in 2.9