they look scary, but i promise it's not has hard as it would seem. Treat them as a giant rivet... is the easiest way i can describe it. Just wrap over and around it, don't commit to it or anything too close around the hinge. Then take a xacto, cut the very top of the hinge, and glove it into place, and then commit around it.
sorry if the above it confusing.. kind of hard to explain in text.
good luck.