I got one cranking out from batch 1, running great..  the box from batch 2, reboots every 30-40 minutes.   Goes down ever 10-15 minutes with crc errors, fans go off, and restarts after a minute.   Temp on heat sinks  is from 85F to 105F    running at stock speed

 HFA 1: 74C/.79V 76C/.79V 67C/.80V 67C/.79V 413.0G/414.5Gh/s

OMG!