ok First time poster long time reader. I am getting ready to build my first UDS, While in Menard's last night, I passed by the grill products and saw that they had the 22.5 Porcelain Coated grill grate for cheap, 7.49 cheap. Could I use this instead of the stainless steel, or whatever comes in the Weber grills? Also does anyone have a link or part number for what you used for the two air intakes at the bottom and the brass ball valve? I have all three big box stores, Lowes HD, and Menard's, and true value. Everything I look at is either zinc or galvanized Is black steel ok to use in these? I know we don't' want zinc or galvanized but have not seen much on black steel.