I replaced my hatch door with a good rust free one (Thanks Cam and John) and now I need to figure out how to get the old lock in the new liftgate. I'm not seeing how the old one comes out! (And yes, I took the access doors off the inside!).. How does it disconnect. I don't see screws or anything or what is holding it in place. This is probably a "Oh, I'm stupid" sorta question...