I'm working on the kiln's burner system now. There are ten of these venturi burners and all of them were filled with nuts. Somewhere out in the woods is one pissed off squirrel.
Once the nuts and other debris was cleaned out of the burners I put a round wire brush on the end of an electric drill and cleaned the hell out of the inside and outside.
The otherday I removed the pilot ring and cleaned every pilot hole, 187 of them.
During the move we accidently broke two of the mixer pins, (the threaded piece at the end of this burner), so I'm trying to hunt down two replacements. Also will need a new thermocoupler. Once I get that done I'll reassemble everything and set it up under the kiln for operation.