When I tried the M1170, when I did the degree, the compensator wound around and I scratched my head on how to pull it down, mark it and then see the degree. Never did figure it out to make any sense and just did the 165.
I used a protractor and drew the lines on the nut and comp with a Sharpie. Then using a 4 ft pipe on the end of a breaker bar, I cranked it until I had the lines lined up at 45 degrees after torquing the nut to the initial torque. I would just check periodically until I got there. It was a pain in the *** for sure.