I found an old Marlin Firearms model 50 .22 in my late Grandfathers garage. As this is the first rifle I've had, I not sure about something. It has no sights in place except for the pip on the barrel. Numrich sold me the semi-buckhorn w/ elevator that should be mounted. No instructions, of course. Anyway, my question is... which way does the elevator go in. Tried it both ways and it doesn't seem to be very secure. Any help would be appreciated. Nearest gunsmith is about 120 miles.