Incukit is not design for cabinet incubators that is your problem you need as you said a good thermostat
something like this contact incubatorwarehose and ask if you can exchange incukit with it
I had the same problem with my full size fridge incubator so i closed all vent holes with tape to my surprise still the same problem very hard to raze humidity i still do not know the reason but i solved it by using ultrasonic humidifier now i have 3 vent holes about 2 cm in diameter with no...
I spend the morning watching and waiting my broody hen to leave the nest
she left around 10am she went first to drink water then poo, eat, drink again,
took earth bath then eat again, again earth bath, shake her body and wings stood for a while
in the shade of a tree flapping her wings and...
Last hatch of the season for this incubator i have an other 2 full incubators the same but bigger due to hatch soon
25 out 28 hatch not bad
here is a photo of the last ones the others are in the brooder
The prinsea spot check thermometer is really accurate
http://www.brinsea.com/prod-spot_check_digital_incubator_thermometer-25.aspx
and the similar you can find on e bay under deferent brand names...
Too high temperatures in summer may create problems
last summer it was so hot that my incubator cook the eggs only from the heat created
from the fan and turner motors (heating element was always off)
I incubate spring and fall usually