We have the same Everchill and usually set the Temp to 3 when we are traveling and the blend knob in freezer is set as Mac1_131's is set (pointing towards about 1 o'clock. I have never changed the Blend Knob setting since set to 1 O'Clock. When home and not traveling we set temp to 2, our Everchill has never been shut off, I just set temp (#2) lower when home.
The 12v Compressor refrigerators cools pretty fast, unlike an absorption style that can take 24 hours to get to normal temperature.
The blend knob is what controls how much cold (freezer) air is directed to the refrig area. I suggest you set it to about 1 O'Clock and see if it that gets your refrig area temp down. I have the same
duel digital thermometer at Mac1_131 in my Vibe and one in my Home Refrig, it works great and keeps track of Highs and Lows.
-Russ