The frigid morning was not a good motivator for me, but I did manage to get some work accomplished.
As I was preparing the cabin's fresh air vents final fitting, I noticed that one of the two nutplates appeared to be internally damaged. Not wanting to take any chances, I remade that corner plate & attached a fresh nut to it. With all components cleaned & ready for final assembly I set the epoxy in place - which should be cured within 24 hours.