Need help figuring out importing animations from blender

Hi, i'm messing around with modeling and animations, i made t$$anonymous$$s plane with control surfaces in blender (plane and control surfaces are divided into multiple objects) and rigid them using empties and constraints, i exported the model with an animation of flaps deploying in to a fbx and imported it to unity. in unity the control surfaces were moving but they floated above the wing. I tried looking it up and just messing around with the export setting but not$$anonymous$$ng worked although there were changes in where the control surface was floating and in the way it moved. i'd be happy to supply the blend file but i don't know how to do that. any help would be appreciated, also alternative approaches are also welcome as i'm somewhat new to both worlds. Thanks in advance!