My cam card shows open at 30.5 at .050 and I get 29. Cam is installed at 105.25. Closing spec is 58.5 and I get 57 .050 before close. So that is real close. I have a gentleman over on speed talk tell me to use .020 to center the cam with asymmetrical lobes. I am still trying to figure duration at .200 lobe lift. Do I read the wheel for this or is it a math equation? Spec is 190 lobe lift at .200.