I have a merc 1100ss that needs some help. The shift cable needs adjstment but i cant seem to get it right. In neutral the prop does spin both ways but ratchets kind of binds. I have had the lower unit off a couple of times now first was for the impeller replacement second was to check lower shift shaft. i do have a seloc manual for my motor but it is worthless for the shift cable adjustments. When i had this in the water last weekend it does shift t forward and neutral does kind of work but reverse does not move the boat backwards the prop does turn the propr way and when in reverse and on the throttle the motor revs up and the prop spins but no reverse movement. I know it needs to be realigned via lower shift shaft and cables but need instruction on how to do so properly. Any Help/suggestions would be great.