I have a head I bought for parts that has an excellent exhaust camshaft that I would like to use for another engine. Some knot head broke two teeth off! I don't know how. The amount of chain that wraps around the sprocket leads me to believe that it could potentially run forever with two teeth missing with no issue assuming I knock down the sharp edges. Also wondering if anyone has replaced the press-fit sprocket on these before? Is there anyone out there that could do this for me?