[HG] Vibrating keys

[Seth Hamon]

     The keys vibrate on the gurdy I'm building when I
bow the string quickly.  I thought I made the keys fit
pretty snug but I'm guessing not enough.. I took some
thin clear plastic styrene sheet and glued it to the
edge's of the keys to give it a better fit but I'm
still getting the vibrating.

Any thoughts on why this is happening?  I'm thinking
I'm going to have to make a new key box...   Thanks, Seth