You're the mental.I was just following instructions.
And I think Xen did a chunk last night too (he was helping me when I gave up and went to bed)
I think there's maybe a bit too much light in there for the spawner to work if/when monsters get switched back on. I'll have to revisit it if that happens.
Also, I used the underground bit near the teapot as the marker for turning right again. It meant raising the floor in one room by one block, and I need to replace a single block of earth that had a flower on it. Sorry.