The seal on the door is fine as verified with "dollar bill test." But the hopper lid and ash tray don't come close to a proper seal. I have read where people are using weather stripping from the thread below. Is this safe? It will solve the potential problem. Latches are already adjusted as tight as possible.
https://www.hearth.com/talk/threads/attention-englander-owners.135717/
https://www.hearth.com/talk/threads/attention-englander-owners.135717/