A few weeks ago I rehabbed an EE (99) Performer for a friend. My some incredible act of ingenuity, the previous owner got the lid hot enough to *melt* the thermoplastic tab that allows you to adjust the lid vent without burning your thumb.
I just called Weber, who told me emphatically that I had to buy a whole damper kit to get the plastic part-- $5 (part #63070, I think they call it a 'nylon damper handle'). I know in the past I've gotten the individual plastic pieces for less than that(and maybe even free), but didn't keep track of the part number. Does anyone have it?