I try to open my mercury 350 (35HP) lower unit and I'm stuck. I removed the LU from the engine (thanks it was not rusted). But and can't figure out how to remove the bearing carrier. My Solec manual doesn't fit with my LU. I removed the external nut and a small piece of metal called "key". I think I have to turn counter-clock (I don't have spacial tool so I try with a screw driver and hammer). But nothing seems to move. Any clue would be appreciate.