anyone can you please help me on this 1994---- 150hp black max motor that i bought to put on my 18ft open bow boat, i take it to the shop to make a service guy replace the old 125hp merc with this new one and he take off all old cable and horness and put on a new one that can work on the 1994 black max motor , but now he's tell me that the motor is good and everything but the only problem that i have is when he start the motor up and put it in gear forward the prop turn reverse and when he put the motor in reverse the prop turn forward so can please please help me out on this cause this is the first time i hear something like this so i help on this topic so i can tell the service guy wat's his problem so he cant charge me anymore money for the job thanks