I have a 87 larson citation I just got with merc 470 motor and alpha one 165 outdrive. The problem is on the shifter tilt switch only the down works and on the trim switch on dash only the up works. So I can still lift the motor up and down one way using both switches. Other question I have is first time out on boat with FOT I trimmed up the motor two touches of switch to have motor overheat instantly. I can trim up at slower speeds without a problem. This is my first i/o motor. Always had outboards. Thanks for any help.