You align the cams to the dots/links on the chain, or by counting teeth. Probably don't touch that. You install the CAS with the crank set at 2nd dot from left, cams lobes out, using the dots on the CAS shaft. You set the timing with a light to the 2nd dot on the right, after it's warmed up. If you did it right, the CAS should be more or less in the middle of the adjuster window.