Ok can anyone chime in on the grade of ss on the summit silver b flavorizer bars? Magnet didn't stick to it which assumes 300 series. However, couldn't get a definitive answer from weber. They couldn't tell me because of "competitors". Sounds fishy to me as if they used a cheap grade. Part is the 9896 bars. Expensive as hell to replace from weber. If I could weld I'd make my own