My UMC may be broken. Last night it would charge for a bit, then the car gives me the "External Charger Problem" message on the VDS plus red LEDs in the chargeport, plus 4 blinks on the UMC. Apparently, the 4 blinks means the UMC is overheating. It was pretty warm, but not really hot. Car had not been charging that long. Was pulling about 247 volts at 40 amps. I'm going to try lowering the amperage a bit to see if that helps, but if the UMC is indeed bad, what are my options? I've found that I don't actually use the "mobile" part - I'm in CA and there are lots of J1772s for road trips, so the UMC always stays at home. I was thinking of getting the Model S UMC ($650 vs $1500) and then somehow swapping the cables. Or I could get the Leviton 40amp J1772 wall mounted ($1100) and use my J1772 adapter all the time (or swap in the Roadster cable from my dead UMC). Maybe I could find a used UMC for cheap? Any other good options? I should also ask if anyone else has run into Roadster UMC problems and what "cures" there might be. Could this be a clean the contacts thing, for instance?