Thanks for all the great help! CC is installed and working just fine. FYI: That last frustrating shroud screw turned out to be an 8 mm socket. Why they decided to put that lonely hex nut where they did will remain a mystery to me, I guess. Go figure.
I plan write down all the steps I used in detail so I'll know what to do the next time. If anyone would like to have the benefit of my experience, let me know a I can email you what I have. Thanks again, everybody.