I'm trying to adjust the lower shift cable on an alpha I drive (motor is mercruiser 4.3 L V6). The instructions say to manually shift (push in on lower shift cable) the drive into gear while some one spins the prop. I've got that down - the drive shifts fine into gear. The instructions say to adjsut cable so that you measure exactly 6 inches from the center of the brass barrel to the cable end guide. Here's where I need clarification. Do I measure to the end/tip of the cable end guide or to the center of mounting hole.