I ordered mine directly from him about a year ago.
If he is no longer making them, I would suggest hitting up the For Sale/Want ads and see what comes of it. Beyond that, there is a write-up (or at least was) over on either L.O.D or Lincolnsonline that detailed the making of the 'Rays' switch and the 'Fast Bag' set-ups. If you are wire savvy, those may be the way to go.