So I've only shot my Five-Seven a few times and I want to make sure that I'm properly oiling the thing. I've gotten it neurotically spotless. (The inside of the barrel shines). I put a drop of oil on the grooves in the slide rail and the contact points for the barrel. Do I need to put a drop in the center of the slide where the striking pin moves (with the little spring in the groove)? The manual doesn't seem to be that helpful. The more detail the better. I would really appreciate the help. Thanks.