I hate those CA hinges, since there is ALWAYS some resistance and it's too easy for them to rip out. I use real hinges like the Great Planes hinges shown below. I place a toothpick (or other HARDWOOD) through the entire trailing edge and control surface, then cut it off and sand flush. This is how I was taught to "pin" a hinge. I've never had one let go. The entire trailing edge will rip loose first.