I think what might have happened is that when I moved the miners for the first time in about 1.5 years the other day and blew out the huge amount of dust inside of them, I might have removed the insulating factor provided by the dust. The cubes have always run hot in the 3 years of flawless - no maintenance - operation  up to this point in time, but they seemed to be running hotter lately so that's why I ran the GenTarkin firmware which currently seems to be doing nothing/is idle and about which I'm unclear as to next steps. I might just end up restarting.

Based on past reading, your quite deep into these units. Do you have any how-to info about opening - and being able to reclose - the cubes and any info about the thermal paste application process? It looks like rivets to me that would have to be cut.

Thanks