I chucked the key in the drill and then locked the key in a vise. That made it easy to twist the body of the tool off the chuck without having to hit the key. now i i'll fix it and post it here,,i have some esperience with this kind of problem and my porblem is just becouse it just got stuck opened, was brand new and it happened out of nothing,, give me a few days and ill say what happens..thanks...ohh ill post here a link to a video on youtube of a guy taking it off,,,see ya..http://www.youtube.com/watch?v=UEj8qv02o9Q&feature=player_embedded#!