I was trying to install an airport extreme card on my old powerbook g4. When I tried to put it in, it wouldn't budge all the way like it should. I took the case apart and took out the interface cable and I noticed that there's some hard gunk on half of the pins and it won't come out with anything I can try. Does anyone know where I can buy this cable by itself? I've searched several dealers but can't find anything =/