I also put a strip on foam insulation between the base and the lid, a heavy book or something similar on the top helps keep things tight just be sure you don't put it over any of the vents. Another thing that is really important with any bator, but especially with the less expensive foam ones is that you keep it in a room that is draft free and has a stable temp. I started out with mine in the kids bathroom because it's an interior room with no drafts, but temp and humidity fluctuated too much with bath time so it came to live on my dresser--dh didn't like the peeping in the middle of the night but it was the best room in the house for the job.
This probably goes without saying, but I'll say it anyhow--keep the bator away from windows. Not only can drafts be bad, but even a short time sitting in front of a sunny window can bring on a fatally high temp spike. What else? Oh, run it for 24-48 hours before you set the eggs so you can get the temp adjusted properly. The lg's temp dial thingy is pretty sensitive so just adjust it a bit and wait 4-6 hours for it to stabalize before you try again. The temp will go down and stay that way for 12-18 hours after you put the eggs in, resist the urge to turn it up until the eggs have been in for a full 24 hours. It won't hurt anything if the temp is a little low for the first day, but it will be a time consuming pain in the behind to get it right again if you start messing with it before the eggs have "come up to temp." Don't ask me how I know this.
This probably goes without saying, but I'll say it anyhow--keep the bator away from windows. Not only can drafts be bad, but even a short time sitting in front of a sunny window can bring on a fatally high temp spike. What else? Oh, run it for 24-48 hours before you set the eggs so you can get the temp adjusted properly. The lg's temp dial thingy is pretty sensitive so just adjust it a bit and wait 4-6 hours for it to stabalize before you try again. The temp will go down and stay that way for 12-18 hours after you put the eggs in, resist the urge to turn it up until the eggs have been in for a full 24 hours. It won't hurt anything if the temp is a little low for the first day, but it will be a time consuming pain in the behind to get it right again if you start messing with it before the eggs have "come up to temp." Don't ask me how I know this.
