Hey everyone quick question. I have a merc 1150 1971 model i am trying to changed the prop. It does not seem to want to come off. I have taken the nut washer ect off the front of the splines and still nothing. Is there a trick to this thing or is it stuck on there bad beings in how it is 38 years old. Let me know i have hit it with a rubber hammer pretty hard and still nothing. And help would be great.