ok so i just got this ranco thermostat in the mail today and got it all wired up without too much of a problem. I put the thermostat probe in the tank right next to the accurite thermometer probe but now the accurite readings are about 6 degrees cooler than the ranco. My thermostat is telling me that the temps are at 93°F while the thermometer is telling me 87°F. The temps are fluctuating a bit as well since I have the differential temperature on the thermostat set to give or take 5°F. So now as i look over at the thermometer it is telling me 85°F on the hot side!! I don't know which reading to go by or what to do. Please, any help would be greatly appriciated.