BTW...
I just ran Bertmod for the first time,
It showed all cores on all machines at 100%, except one had 3 cores on a single die...dead...
I tightened the screws a bit more on that board... (very tight)
It brought them back!!!!
Bertmod is awesome!
Now 100% on all boards!
edit...spoke too soon... they shut off one by one within two mins still...

will try to coax them back....
I'm pretty sure Bertmod didn't do anything to bring your cores back from the dead. Bertmod just expands the stats for the KNC web GUI.