1984 Mercruiser 260 w/alpha 1 out drive had new bellows and shift cable put in Fresh tune up and carb rebuilt. Engine runs great will idle all day at 800 RPM when you try to shift into eather forward or reverse engine will die. Not sure if interupter switch is working is there a ajustment and also is there such a thing as sincronizing the throttle cable with the shift cables. this problem existed befor the bellows were replaced and carb rebuilt.: