Hello all- I just bought a first generation Performer and I'm in the process of cleaning it up. The sweeps are actually in great shape considering the age of the grill (made in 1997). I imagine a previous owner may have replaced these but they're the old style center bolt and not the "H" type.
Some say you can identify stainless by non-attraction to a magnet, but magnets do stick to certain types of stainless, for example, the vast expanse of stainless steel on the top of the Performer frame.
Thanks for any info!