I was wondering if anyone had experience running a Tobi outside the component temperature range of 0C - 70C, specifically colder than 0C.  If so could you relay any useful tips?

We may be operating our system at outside air temps as low as -20C.  While the system is heated, we are assuming this as a lower bound (say the heaters fail or a cold start). COM is Overo FE.  The main thing that comes to mind is thermal expansion/contraction of the COM and expansion board causing seating issues, also brittleness of AV plugs (they are not going to be used).  The COM will be epoxied into place and conformal coated.

Thank you.