So after a while of owning my Legnum I noticed the rocker cover gaskets were shot, and replaced them. While replacing them I noticed the spark plug holes were filled with oil, and the "boots" (for the lack of a better term) of the ignition coils had swollen a bit. There's been no misfire issues or anything, and the coils themselves are fine. Is it possible to replace just the boots on these or would I have to replace the entire unit? If so, does anyone know where I could find some? I don't think you can get them direct from mitsubishi at least.