ROB:
You are welcome. It was earlier in the thread.
Squeak: Please show me (or tell me) who says that lowering a flame for the purpose of making sure food does not burn on Yom Tov is Assur. Oomis has a Psak that if the pilot is still on, then its still only lowering the flame and not extinguishing it (logical), and is allowed for Tzorech Ochel. It seems that, and only that, is the point of contention.