I have a Vermont Castings grill that I like a lot. It's time to take it
apart and clean it up.

What's a good way to clean the grates? IIRC, they are porcelain. And the
flame diffusers, which are coated with layers of charred mammal fat? And do
I really go through it all thoroughly, or is there a soak that I can use,
and a power wash/air jet finish up? Some of it just needs a putty knife,
some elbow grease, and TLC. Or should I just power wash and scrape
everything, put it back together, and run it on high for an hour or so to
burn off the excess?

TIA

Steve