check this out first http://www.nexusmods.com/skyrim/mods/51609/? ;) and this awesome retexture of the bow http://www.nexusmods.com/skyrim/mods/52367/? ;)
FINALLY i managed to make my own Bow(and it works now 100%) and bring it into the game though without this guy it wouldnt be possible KettleWitch <3