that little plate i think is actually metal. that is what you want to have pushed up with the orange ball and allen screw
I've screwed the set screw as tight as I dare but it seems moot since I'm not getting any voltage at the carto connector. Right? Or do I just not understand?
I'm pretty sure the battery is hitting that rounds brass ball in the top cap because I can see a shiny spot on it.


that's supposed to be the purpose of the regulator in the cap