Has anyone had trouble getting their seat to unlatch. I can't get the key to turn. Pushing down on the seat doesn't help and shaking it don't work either. Finally had to get the wife to hold up on the seat and use a long flat screw driver to get it open. Took two tie raps and tied it open. Does anyone have any advice on how to get the key to work. Or do I need to get a cable greasing kit and grease it good. And yes I pushed down on the key before trying to turn it.