Looking at your pictures, if you drill a hole at the top of the mailbox lid, it will help with draft....I had the same problem with the tray. I could get it burn dust, however it too wants to go out. I an using the 12 inch tube now and it works great. I also bought a usb powered fan off of Amazon 12.00 and I place it in front of the mailbox. View attachment 391303 View attachment 391304