Hi, all. I'm extremely new at this and don't know if it's normal for my digital 6 rack to fluctuate as badly as it does. I was trying to keep the temp at 200 and I kept a log of it at different temps. At 190 the temp ranged anywhere from 171-219; at 200 it went from 180-226 and at 210 it went from 210-235. It would hit the high and then back down to low and then back up to high again. Is this normal? It was 50 here with winds from 10-17MPH. I have it on my front porch out of the weather.