Here's the two tools I made. The one on the top is the one like Matt Blaze shows, and the one on the bottom is the one you just insert and don't mess with.

Here's the link to Matt Blaze's site. http://www.crypto.com/photos/misc/everest/
Has anyone had good success using the same method as Matt Blaze, or did you end up just doing it like me?
Do you need to file down one of these tools for each different keyway? I haven't seen the other keyways to be sure, but it seems like with the tool cut so low it might work in the other keyways.
Has anyone gotten the Everest tool from Peterson? http://www.peterson-international.com/tensiontools.htm $50 is alot for a tension tool, but if you do need to make a different one of these for each different keyway, I could see paying that.