Problems importing animations

Im trying to add a little bit of visual flare to a little game Im working on by adding in animations, my problem is getting them from Blender into Unity. Ive got a steampunk Gatling gun modeled and ready to go, Ive got an animation of the barrels rotating, the gun "activating" (rises out of its housing when it senses and enemy), and an Idle animation of some machinary moving about. They all work great in Blender, but when I import the FBX file into Unity things get a little wonk. Portions of the mesh are cocked at strange angles (parts of the mesh that are static, and dont even have any bones). Its really rather perplexing me, can anyone shine a little light on this, or point me in the direction of some good tutorials or how-to videos on the topic?