I am trying to remove the four stainless bolts that hold the strut that holds the drive shaff just forward of the prop. Two came out but two others only turn and don't back out. I'm trying to do this to work on the cutlass bearings. Is there a way to get to these bolts from the inside of the boat? How are they fastened? Is there a nut? Is there a better way to change the bearing? Help.