I need a new black knob (I guess they were all black) that goes on the end of the seat track adjuster. My knob partially melted while I was modifying the seat track to fit late model seats. NPD has "original" knobs, but I'm not sure if that just means it's the original style or if it is used. Either way, $13 plus shipping for that knob seems ridiculous. Does anyone have an extra lying around that they can let go for a fair price?