Hello, I have started to fettle my FL6 lamp. Dismantled and I have given the burner a preliminary clean. In doing so I found on one side an extrusion which has been sawn off and a nut with a screw has been inserted in the hole. The slot has been almost filed away. In my ignorance I have assumed that this burner is off another Tilley lamp. Can the experts verify this or otherwise. Also the silencer tubes seem to be old 1/2 inch copper water pipe. If I remove the screw will it enable me to dismantle the burner completely? As I cannot find an exploded diagram. Only the one in the instructions available on this site. Many thanks for taking the time to read this. Sid.