I have been trying to make my first bookshelf and it all seems to be working fine EXCEPT that the books are hovering in the middle of the shelf, see attached picture

I have tried everything I could think of, moved all the various markers, container, trigger, collision plane etc to places that might logically fix it but nothing seems to make a blind bit of difference.

http://i173.photobucket.com/albums/w71/Bishop149/bookhover_zps37aed3e3.jpg

I am using this mod:

http://skyrim.nexusmods.com/mods/10891/?

But have set them up a normal (rather than as described there) because I didn't think it would make a difference from how it was described and I wanted the shelf to function for those not using this mod