Installing the 9650 into the frame

First trim off the tabs on the side of the servo. Be careful not to break the mounting tabs. I used a pair of wire cutters carefully then a file. Next install the top screws but don't tighten them yet. Then use an Allen wrench as below to hold one side while you screw the other. Simply slide the servo nut on the allen wrench and hold it with the heli on it's skids.