Yes so did I, but they are ADDING to the volume, not taking away, so the CR goes down. I didn't know that the other manufacturer uses a positive for theirs, seems like there's no standard for that yet. As you say (and I didn't know until you said it) the 5 is 5cc for the valve depressions and 16 is for the dish. The only minus value should relate to the CR, but it's not, so it seems strange they use it for cc
