If your sockets are shorted out against the case, then yes, this will short out that channel.I used sockets that don't have any gap in the plastic housing to avoid making contact with the aluminum case.
Yes. The hex nuts are metal, so if they are touching, that will cause a short.Could the hexnuts securing the purple and green outputs somehow cause a short? I had a mishap while drilling the holes in the faceplates, so those two sockets are close enough that the hexnuts are in contact.
No. The housings are nothing more than heat sinks. The heatsinks have no effect on the resistor value unless somehow the leads are in contact with them.Could the housing of the resistors making contact cause a short?
I think the best thing you could do is get a multimeter that has continuity check on it. Read all your connections out to the case, to the heat sinks, and between each other. A quick YT search should provide countless results on how to use a multimeter.




