Found a useable 40 gallon tank. Already had a door and flue hole cut. I added 3" air intake hole and am going to weld in a piece of Drive shaft tube with the funnel on the end. I rapped copper tubing around the 6" flue pipe 6 or 7 times and brought the tube to the center on the intake hole. I am going to switch from copper to steal at this point thinking it will last longer in the heat of the stove. My question is... Do I run the drip tube stright down the center of the ait intake pipe, through the center of the top pan and through the center of the 1/4" steel plate down into the the bottom burn pan. Or do I run it outside the burner assembly and poke it in where the fire comes out of the burn pan?