I will continue my stance that most of what we are talking is theory and not law...the Bernoullie effect however IS law....and as such is open to much interpretation....if it was set in stone we could take CA 'A', CA 'B' and CA 'C'.....connect them...take them over the SSR at about 10* blend them into throat diameter 'X' through valve diameter 'Y' and over seat angle 'Z' and have the perfect port everytime.....unfortunately the real world does not work THAT way and as such we have flowbenches, dynos and computers to anaylize all our data and tell us what actually works....