I'm putting together an ARF that came with a hinge I haven't used before. The hinge epoxies in and has a pin that joins the two halves.

The pin is L shaped and comes out if I pull it. Picture is below.

Question is:
Do leave the L part free to move between the control surfaces? That would allow me to remove the control surface by just pulling it out. But that also worries me that it might come out on it's own.

Or do I epoxy it into the wing with one side of the hinge?