well i was given a little giant incubator with turner, being that i had to assemble the turner i doubt it has been used. I have read all the different opinions on them and have had it plugged in for most of the day getting it dialed in. So far i have added a nob to the heater controls and it seems to make adjusting the temp a lot easier. So far i have only moved the temp adjustment 3 times and temp is holding for the last 3 hours. Would it be better to add a fan to it or leave it as a still air incubator?