Thank you very much!

I would like to be able to drop something on top of my grill which would
allow the heat to disperse across some channels instead of an entirely
different unit (if possible).

Contacted the distributor via tootoo and hope to hear back regarding a
source that sells single units down their distribution channel.

Maybe folks that have access to a Japanese-goods store may have better luck.
Looking around our Little Saigon, no luck for me.