I went to adjust my zero stop on my NXS today and I loosened up the four screws on the clutch so they were flush with the top. I went to turn and it was pretty stiff, it started turning and then it started to turn the elevation screw at the same time. I reread the instructions and watched LoneWolf's video on youtube just to make sure I was doing it right. Has anyone else had this problem setting up their zero stop?