Here’s a pic of it off. Studs are tight. You can see the burn mark here better. Just about to test it for resistance. Have to google how to. lol. Just found my multi meter
I just tried checking resistance. It reads .000 when I touch the probes to eachother and still reads .000 when I touch one probe to each of the studs on this. The is the ammmmeter, correct?
That's as good as we can get with a basic multimeter unless we set up a test circuit.
IMO - and its just my opinion - is that there nothing to indicate a poor connection if the studs aren't loose and the meter shows zero.