Yes there is a reason they are on top.... because I'm impatient and dont think before I do things. I am going to have to cut all those out and patch the holes and also put a drain in the bottom of the tank. When I started the tank I just kind of rolled it to where the little legs underneath supported the tank steady and started cutting..... Didnt realize what I had done until a couple weeks ago... All that stuff on top is going to be removed though. The flange is going to be welded to the door, except the top seal which will be put inside the tank since it wont clear with the hinges I used.. I think it looks better that way and hides blemishes in the cuts. I shouldnt be losing much smoke with the door fitting so well but if I do I will put some on the inside also.