I just bought a used cf jardine that had a small hole on the outer layer( at least that's what the seller said) and he used hi temp epoxy to fill it. I'm still in the processes of installing it so we'll see if it holds up. I think you can just order a sleeve from jardine. A buddy of mine did and he said it was around 80 bucks. ASB has a repack kit or you could order directly from jardine