I believe the mold mentioned above is the closest you will find. The double barb mold is an older mold before they came out with the new barbs. I have one and it does have a 3/32 cavity in it but only one cavity.
There were a few places doing custom molds. dragonflylures, and i think lurecraft, there is mold maker on ebay although he mainly makes plastics, and there was another one that made big molds with round plastic handles, sorry i dont remember the name.
I just went an took a CNC machining class at the local community college and made my own. I have heard of a few guys that have gone to schools and had them make a mold as one of the classes projects.