I have a 2014 22.5 kettle and recently rescued another 22.5" kettle on its way to the tip. I noticed that the cooking bars on the older (1996) kettle are larger and stronger than the new, equal dia. to the circumferential and reinforcing bars. Is there a light and heavy duty grate? or is this just a new design, thinner material in the new kettle? Were these grates always nickle plated or were they once stainless steel? Can you get stainless grill now?