Ok, I think I follow you. Here's a little something I threw together for adjusting the shift cables, maybe it will help.
1) Adjust the upper cable barrel to set the distance between the two pins to 7 1/4ths inches while in neutral.
2) Adjust the lower cable barrel to fit the cable properly between the pin and barrel socket while in forward gear and the prop locked in gear counterclockwise.
3) Adjust the pin in the slot on the actuating lever to fit the cable properly while in reverse gear and the prop locked in gear clockwise.
4) Repeat steps 2 & 3 to verify settings.