Hi there, Wanda..... I have also made a key that doesn't fit. However, I saved my game before I made any key (right in front of the key machine keyboard, in close up). That way, if there was any trouble or I didn't get it right the first time, I wouldn't have to do anything but go back and load that save game. Maybe you should go back to a save game and come through here again. Could be that someone else has a better idea though. I'm not that well experienced with this puzzle yet.
Love, Witchen =O)