If you have a buddy with a lathe you can get him to drill a hole right down the middle of a hex head bolt for you to get a nicer fit on some thermo's than the lamp parts.
You might still be able to make a ring to fit inside the drum to guide the drips down into the drum ?? How to fasten it to the bowl....hmmmm. If you could find stainless strip, and a guy with a tig welder......:-).
I have a smaller drum like that for a mini uds but am haunting CL for a the smaller weber for a lid.