I have a 16 ' tri hull ,with a 80 HP Merc (79),Im having a real hard time raising and dropping it .I thought the shocks were froze ,so I took them off and it still is working hard ,,cant find a grease fitting on trim axle ,so I tried spraying oil in there, still no luck .<br />Im sure there must be rusted up in there ,would like to replace the axle ,,anyone know a good site I could find one ,and will I have to remove the motor to replace this?