FJH -
Good point - how do others clean the grate? Wouldnt touch brillo pads myself, they scratch the nickel plating. I use a brass bristled brush. Not as hard as the nickel, but harder than the crud, and every now and again a good dose of 2600psi man-toy (aka pressure washer).
Of course, ex-mother-in-law used a brillo pad to clean my (previously) high gloss finish dining table.
Hawaiian shirts de rigeur, hardly worth mentioning in this esteemed company. The only qualification is your pride and joy came from Palatine, Illinois.