Cool, good to know. Yea, I had a full copper pick, once I find some more lava so I can melt down my copper blocks (didn't know they couldn't be smelted back to ingots like iron) I'll repair my pick and try again. If not, I'll work on getting that zombie head!
Thanks again for the pack, its definitely challenging me
Edit: So I have made a new copper pick, put in the zombie head, still won't accept it. What am I doing wrong?
http://imgur.com/lDMdQz9
Edit: Also, it didn't recognize me crafting the iron capped wooden wand.