Let's talk about the poison tail 1/8 oz. I used to have that mold and found that I could take a piece of regular house romex electrical wiring and strip off the insulation, I think it was 10 ga., and make pins out of it for that cavity.
I have some other molds that I prefer to use 90# sevalon or surflon as weedguard. They don't get painted so I don't have to worry about heating the head. I fill in the weedguard slot with high temp silicone from Harbor Freight. I can lay the wire on the silicone, close the mold and pour away.