I want to turn my old incubator into a hatcher so I'm trying to get it working a little smoother. It has a water heater tstat, I just tried drilling holes in the plastic, I was really excited that that might work, but it didn't seem to change it. I've tried moving the tstat all over, closer to the light, facing in and out. It seems to work best if the tstat is right in front of the fan, facing out, at best a 2.5 degree swing. I'd love some opinions or ideas on possible fixes. Thanks!