Well, I turned the thermostat up to 75. That cools us down to about 72. And the frost has dissipated and the coils have returned to normal. It's not kicking on and off a little more normal, and the compressor doesn't sound like its about to take flight.
I'm thinking that because the thermostat is in the wall, and surrounded by a mounted plate, and covered in adhesive foam on the back it's not getting an accurate reading, and we were running it too hard.
As it gets warmer outside and we get closer to summer, I'll monitor it. If it gets to the point where it isn't performing optimally, I'll move it to the front which has a direct return in front of the grill, and move the smaller unit from the front to the back.
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