I followed the procedure for adj shift cables.Ican shift into reverse ok but when I throttle up the interrupt kills the engine.when Igo into forward the interupt does not appear to move.Does the interupt have to be checked when boat is in water? .when in full rev and throttle up the interrupt is on the high spot the manual mentioned something about it reseting ,does not appear to be doing this .any ideas ? and thanks for the help on this weeks list of trouble. <br />3.0 liter Mercruiser with Alpha 1, 2000