In my experience, the CAS drive pin on the JWT cams has been set different than what is found on the factory cams. They are always close enough that the CAS can be adjusted to 15 degree's, but they have not been center where you will normally find them from the factory. The CAS drive pin, and the CAS needing to be adjusted to other than center for 15 degree's will not cause any issues. Always make sure that when you use a timing light to set the mechanical ignition timing at the CAS, your also looking at the ECU timing output with any of the scan tools available.