RE: CA hinges came loose.
I don't know why but I have always prefered these .
[link]http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXD941&P=0.[/link] I have never had one fail or pull out when installed with 30 minute epoxy.
I always substitute the supplied ca hinges in ARF planes with them. The hinges you are looking at will require a hole drilled for the hinge on both surfaces but the ones I showed you all you will probably have to do open the slot on the surfaces up a little so that you can get enough epoxy into it. Take a piece of hardwood and shave it down to the thickness of the slit and about 1/4" long. Apply the epoxy to the slit and work in it with the piece of carved down hardwood and then wipe off the excess, it may take a minute or two to get plenty of epoxy in the slit, and then install the hinge, it has always worked for me. It is fast and easy. Just remember, 30 minute epoxy.