Spider Animation not working

Ive got a mecha spider model that i want to use for an AR project. I have created the model, animation in Maya and baked animation in FBX export. I am trying to get the animation to play in Unity, i've set my rig animation type to legacy as was suggested by the system, but i don't know which generation type i'm supposed to use. My rig has no central bone, but rather 6 joints rooted at the hip of each leg. What settings do i need to get this working?

 

http://forum.unity3d.com/threads/217163-Animation-baking-from-Maya I hope this helped