Microphone clips came in today’s mail and of coarse they were not quite right, but with a alteration they work just fine. The original base for the clips are about 3/16 wider then the box width so the clips hung over. So after cutting, re shaping and shortening the base and then silver soldering them back to gether you get a perfect fit.
Here’s a before (right) and after shot (left).
And a shot of it connected up.