My point was a regrind of an existing cam DOESN'T NEED A CORE.
Modern inventory control practices have greatly reduced the number of pieces that a company will keep around just doing nothing.
For example, in my line of work, i have become used to the idea that there are no spares for pump impellers or bowls, if you need a new one they will build it for you. The same goes with valves as small as 6", there is basically no shelf stock.
