Thanks! Did freeze a bit, but I guess that's to be expected at -40 deg. Will probably end up back there for another year, so get the Amiga jobs in by September.
@Vlabguy1:
Unless you have to replace EMC filters on the bottom side, you should be able to do just about everything from the top side of the board without removal from the chassis. It's essentially a 5 minute job if you have the parts and tools handy.