My experience was that the chain was so tight that it was easy to assemble with the cam gears one tooth too close. For me the CCT needed to be fully retracted. I used the method Tim illustrated above, expect I locked the CCT by c-clamping the the screwdriver to the frame.
Really appreciate the info and prompt response. I was doing something similar with vise grips and a jewelers screwdriver but it kept backing out. Think I can scrape up tools per the photo!