It really doesn't matter. Some like the inboard location because that helps reduce any exhaust and gunk that may work it's way into the wing where the push rod comes out. Some turn the bell crank around to do this, and in addition, it locates the down line in back, so when the line is pulled the elevator goes down. It's just one of the things I like to do, and it's a long discussion on what this helps or hurts. I have to leave for a dentist appointment, so no time for me to explain it more here. But in the long run, it really doesn't matter and can fall into the class of, "does it make anything easier or work better??" questions.
Type at you later,
Dan McEntee