BB, thanks for your great suggestions. I did actually get all the gaps out after messing with it for a while. I had a couple things too tight and the main suspension too loose. I actually got it too tight at one point and it compressed the insulation just as you said. I loosened it up a little bit and it was fine. I never did get into any cold temps with it, though. I ended up selling it here on the forum a week ago or so. I'm going to get a custom Incubator (84x56) from Adam and Jenny, probably not until Adam gets back, though. I think I'm going to have them add loops on the sides like the Potomac so it stays put. Can't wait!