I found these on Tower Hobbies, they are supposed to be for radio control system transmitters which are around the same size as empegs.
http://www2.towerhobbies.com/cgi-bin/wti0001p.pgm?Q=1&I=LXL375&P=7
or the cheaper version..
http://www2.towerhobbies.com/cgi-bin/wti0001p.pgm?Q=1&I=LXUU48&P=7
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