sorry jon, i was just being an ass about the no screen thing
and your totally right about that lil screw, i would have random times when id plug my xlrs into my mics, then into the dmic, and i would get a VERY loud, audible grounding hum, keep that screw tight and you wont run into those dreadful problems
luckily, i caught them before i actually recorded or id have some WHACKED recordings, and FWIW, it took them years to get loose like that