One of the things I hadn’t quite figured was how to seal things up without major dismantling.  So about this “gorilla snot” (gees; there’s got to be a more household term for that) – that may be the ticket.  Do you know what happens to it when it gets hot – like over 200F? Will it stay in place; and will it harden and make it impossible to ever get the cooler out without a jackhammer?  Is this a Home Depot item – or do I have to know someone in the trade?