Once you get your tank all nice and pretty with the new paint. You go to assemble the lantern.
On the 220's and 228's, or on any painted tank, but I could be wrong...the burner goes through the frame that sits on top of the frame rest which is on the tank. Since you have to spin the whole works to get it assembled, sometimes the tank can take a hit or a scratch from the frame rest (collar).
I took a piece of mylar, cut a slot in it and a hole in the center for the top of the tank fitting. I get no scratches on the tank and once the burner is on tight, pull the shield and then tighten down the jamb nut on the frame. Doug