88 sunbird 19ft. 4.3 motor omc out drive .i have water coming in the boat at all times .when its running or just sitting ,from what i can tell and see its coming through where the drive shaft goes through the back of the boat.how hard would it be to change the bellows on an omc. out drive ,. i change them on a alfa 1 mercruser. they were a pain ,but i got it done .<br /> thanks again